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README.md

Ultimate terminal divider powered by tmux

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Introduction Git Animation

TL;DR

Ping multiple hosts

$ xpanes -c "ping {}" 192.168.0.{1..9}

Connect to multiple hosts over SSH and start logging for each operation

$ xpanes --log=~/log --ssh user1@host1 user2@host2 user2@host3

Monitor CPU, Memory, Load, Processes and Disk info every seconds

$ xpanes -x -e "top" "vmstat 1" "watch -n 1 df"

Log in to multiple EC2 instances with Session Manager

$ xpanes -stc 'aws ssm start-session --target {}' i-abcdefg123 i-abcdefg456 i-abcdefg789

Operate running Docker containers on the interactive screen

$ docker ps -q | xpanes -s -c "docker exec -it {} sh"

Features

  • Split tmux window into multiple panes
    • Construct command lines & execute them on the panes
  • Runnable from outside of tmux session
  • Runnable from inside of tmux session
  • Record operation log
  • Flexible layout arrangement for panes
    • Select layout presets
    • Set columns or rows as you like
  • Display pane title on each pane
  • Generate command lines from standard input (Pipe mode)

Requirements

  • Bash (version 3.2 or later)
  • tmux (version 1.8 or later)

If you prefer older tmux versions (1.6 and 1.7), Use stable version v2.2.3.

Installation

Please refer to wiki > Installation in further details. Here is the some examples for installing.

With Homebrew (for macOS users)

$ brew install tmux-xpanes

With yum (For CentOS, RHEL users)

$ sudo yum install https://github.com/greymd/tmux-xpanes/releases/download/v4.1.1/tmux-xpanes_v4.1.1.rpm

With apt (For Ubuntu users)

# Install `add-apt-repository` command, if necessary.
$ sudo apt install software-properties-common

$ sudo add-apt-repository ppa:greymd/tmux-xpanes
$ sudo apt update
$ sudo apt install tmux-xpanes

With Zsh plugin managers

Attention: With this way, please install tmux manually.

Add this line to ~/.zshrc for zplug. Zsh-completion for xpanes is also available. See Wiki > Installation.

zplug "greymd/tmux-xpanes"

Manual Installation

Attention: With this way, please install tmux manually.

# Download with wget
$ wget https://raw.githubusercontent.com/greymd/tmux-xpanes/v4.1.1/bin/xpanes -O ./xpanes

# Put it under PATH and make it executable.
$ sudo install -m 0755 xpanes /usr/local/bin/xpanes

Usage

Two commands xpanes and tmux-xpanes will be installed. They are actually same commands (tmux-xpanes is alias of xpanes). Use whichever you like.

Usage:
  xpanes [OPTIONS] [argument ...]

Usage(Pipe mode):
  command ... | xpanes [OPTIONS] [<command> ...]

OPTIONS:
  -h,--help                    Display this help and exit.
  -V,--version                 Output version information and exit.
  -B <begin-command>           Run <begin-command> before processing <command> in each pane. Multiple options are allowed.
  -c <command>                 Set <command> to be executed in each pane. Default is `echo {}`.
  -d,--desync                  Make synchronize-panes option off in new window.
  -e                           Execute given arguments as is. Same as `-c '{}'`
  -I <repstr>                  Replacing one or more occurrences of <repstr> in command provided by -c or -B. Default is `{}`.
  -C NUM,--cols=NUM            Number of columns of window layout.
  -R NUM,--rows=NUM            Number of rows of window layout.
  -l <layout>                  Set the preset of window layout. Recognized layout arguments are:
                               t    tiled
                               eh   even-horizontal
                               ev   even-vertical
                               mh   main-horizontal
                               mv   main-vertical
  -n <number>                  Set the maximum number of <argument> taken for each pane.
  -s                           Speedy mode: Run command without opening an interactive shell.
  -ss                          Speedy mode AND close a pane automatically at the same time as process exiting.
  -S <socket-path>             Set a full alternative path to the server socket.
  -t                           Display each argument on the each pane's border as their title.
  -x                           Create extra panes in the current active window.
  --log[=<directory>]          Enable logging and store log files to ~/.cache/xpanes/logs or <directory>.
  --log-format=<FORMAT>        Make name of log files follow <FORMAT>. Default is `[:ARG:].log.%Y-%m-%d_%H-%M-%S`.
  --ssh                        Same as `-t -s -c 'ssh -o StrictHostKeyChecking=no {}'`.
  --stay                       Do not switch to new window.
  --bulk-cols=NUM1[,NUM2 ...]  Set number of columns on multiple rows (i.e, "2,2,2" represents 2 cols x 3 rows).
  --debug                      Print debug message.

Getting Started

Try this command line.

$ xpanes 1 2 3 4

You will get the screen like this.

    +-------------------------------+-------------------------------+
    │$ echo 1                       │$ echo 2                       │
    │1                              │2                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │$ echo 3                       │$ echo 4                       │
    │3                              │4                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

You can split the window into multiple panes successfully, great! As you can see, each argument of xpanes is re-assigned to echo's argument.

Next, let's close those panes. Don't worry if you are not familiar with key bindings of tmux. Just type exit and "Enter" key to close the panes.

    +-------------------------------+-------------------------------+
    │$ exit                         │$ exit                         │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │$ exit                         │$ exit                         │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

As shown above, input from keyboard is synchronized within multiple panes by default.

Suppress input synchronization

To disable the synchronization of keyboard input within panes, use -d (or --desync) option. The input is applied to only one of them. Set tmux synchronized-pane on to re-enable synchronization.

$ xpanes -d 1 2 3 4

-c option and -I option

-c option is one of the fundamental options of xpanes. Its argument is used as a command to be executed. For example, try this one.

$ xpanes -c 'seq {}' 1 2 3 4

You will get the screen like this.

    +-------------------------------+-------------------------------+
    │$ seq 1                        │$ seq 2                        │
    │1                              │1                              │
    │                               │2                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │$ seq 3                        │$ seq 4                        │
    │1                              │1                              │
    │2                              │2                              │
    │3                              │3                              │
    │                               │4                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

seq command which generates sequential numbers is specified by -c. As you can see, {} is replaced each arguments. This placeholder can be changed by -I option like this.

$ xpanes -I@ -c 'seq @' 1 2 3 4

echo {} is used as the default placeholder when no command is specified by -c option.

Brace expansion provided by Bash or Zsh is very useful to generate sequential numbers or alphabetical characters.

# Same as $ xpanes 1 2 3 4
$ xpanes {1..4}

Behavior modes

It is good to know about the conditional behavior of xpanes before checking further usages.

[Normal mode1] Outside of tmux session

When the tmux is not open and xpanes is executed on the normal terminal, the xpanes's behavior is as follows:

  • It newly creates a tmux session and new window on the session.
  • In addition, it separates the window into multiple panes.
  • Finally, the session will be attached.

[Normal mode2] Inside of tmux session

When the tmux is already open and xpanes is executed on the existing tmux session, the command's behavior is as follows:

  • It newly creates a window on the existing active session.
  • In addition, it separates the window into multiple panes.
  • Finally, the window will be active.

[Pipe mode] Inside of tmux session & Accepting standard input

When xpanes accepts standard input (i.e, xpanes follows another command and pipe |) under Normal mode2 , xpanes's behavior is going to be the special one called "Pipe mode". It is documented in the Pipe mode section.

Further Examples

Monitor multiple files

$ xpanes -c "tail -f {}" /var/log/apache/{error,access}.log /var/log/application/{error,access}.log

The result is like this.

    +------------------------------------------+------------------------------------------+
    │$ tail -f /var/log/apache/error.log       │$ tail -f /var/log/apache/access.log      │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    +------------------------------------------+------------------------------------------+
    │$ tail -f /var/log/application/error.log  │$ tail -f /var/log/application/access.log │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    +------------------------------------------+------------------------------------------+

Hmm? Do you want to monitor those files through the SSH? Just do it.

# 'ssh user@host' is added.
$ xpanes -c "ssh user@host tail -f {}" \
/var/log/apache/{error,access}.log \
/var/log/application/{error,access}.log

Connecting multiple hosts over SSH with same user

$ xpanes -c "ssh myuser@{}" host1 host2
    +-------------------------------+-------------------------------+
    │$ ssh myuser@host1             │ $ ssh myuser@host2            │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

Use SSH with ignoring alert message

--ssh option is helpful to ignore the alert message from OpenSSH. It is not required to answer yes/no question against it. Use it if you are fully sure that the connection is reliable one.

$ xpanes --ssh myuser1@host1 myuser2@host2

This is same as below.

$ xpanes -t -s -c "ssh -o StrictHostKeyChecking=no {}" myuser1@host1 myuser2@host2

-t and -s options are introduced later.

Connecting multiple hosts over SSH AND logging operations

$ xpanes --log=~/operation_log -c "ssh {}" user1@host1 user2@host2

The result is like this.

    +-------------------------------+-------------------------------+
    │$ ssh user1@host1              │ $ ssh user2@host2             │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

In addition, log files will be created.

$ ls ~/operation_log/
user1@host1-1.log.2017-03-15_21-30-07
user2@host2-1.log.2017-03-15_21-30-07

File name format for log file can be specified with --log-format option. Please refer to FORMAT for more information.

Attention: Logging feature does not work properly with particular tmux versions. Please refer to wiki > Known Bugs in further details.

Execute the same sudo command on multiple hosts via SSH, entering your password once

$ xpanes -c "ssh -t {} 'sudo some command'" host-{1,2} some-third-host.example.com
    +------------------------------------+-------------------------------------+
    │$ ssh -t host-1 'sudo some command' │$ ssh -t host-2 'sudo some command'  │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │                                    │                                     │
    │------------------------------------+-------------------------------------│
    │$ ssh -t some-third-host.example.com 'sudo some command'                  │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    │                                                                          │
    +------------------------------------+-------------------------------------+

Run commands promtply

-s option is useful if you have following issues.

  • It takes long time to open the multiple new panes because default shell loads a bunch of configures (i.e ~/.zshrc loads something ).
  • If you do not want to leave commands on your shell history.

With -s option, xpanes does not create a new interactive shell. Instead, a command is going to be executed as a direct child process of xpanes.

Here is the example.

$ xpanes -s -c "seq {}" 2 3 4 5

As you can see, each pane starts from command's result, not shell's prompt like $ seq ....

    +------------------------------------------+------------------------------------------+
    │1                                         │1                                         │
    │2                                         │2                                         │
    │Pane is dead: Press [Enter] to exit...    │3                                         │
    │                                          │Pane is dead: Press [Enter] to exit...    │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    +------------------------------------------+------------------------------------------+
    │1                                         │1                                         │
    │2                                         │2                                         │
    │3                                         │3                                         │
    │4                                         │4                                         │
    │Pane is dead: Press [Enter] to exit...    │5                                         │
    │                                          │Pane is dead: Press [Enter] to exit...    │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    │                                          │                                          │
    +------------------------------------------+------------------------------------------+

Confirmation message like "Pane is dead..." is displayed when every process ends. To suppress the message, use -ss instead of -s.

Display host always

$ xpanes -t -c "ping {}" 192.168.1.{5..8}

The result is like this.

png image

As you notice, -t displays each argument on the each pane border. It is called "pane title". The pane title is displayed with green background and black characters by default. See Environment variables section to change the default format.

Create new panes on existing window

-x option creates extra panes to the window. New window is not created then.

Here is the example xpanes is executed on the one of the three panes.

    +-------------------------------+-------------------------------+
    │$                              │$                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │ $ xpanes -x 4 5 6                                             │
    │                                                               │
    │                                                               │
    │                                                               │
    │                                                               │
    │                                                               │
    │                                                               │
    │                                                               │
    +-------------------------------+-------------------------------+

Additional three panes are created.

    +-------------------------------+-------------------------------+
    │$                              │$                              │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │$ xpanes -x 4 5 6              │$ echo 4                       │
    │$                              │4                              │
    │                               │$                              │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+
    │$ echo 5                       │$ echo 6                       │
    │5                              │6                              │
    │$                              │$                              │
    │                               │                               │
    │                               │                               │
    +-------------------------------+-------------------------------+

Execute different commands on the different panes

-e option executes given argument as it is.

$ xpanes -e "top" "vmstat 1" "watch -n 1 free"

Then the result will be like this.

    +-------------------------------+------------------------------+
    │$ top                          │$ vmstat 1                    │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    +-------------------------------+------------------------------+
    │$ watch -n 1 free                                             │
    │                                                              │
    │                                                              │
    │                                                              │
    │                                                              │
    │                                                              │
    │                                                              │
    +--------------------------------------------------------------+

You will get the same result with this command line.

$ xpanes -I@ -c "@" "top" "vmstat 1" "watch -n 1 free"

Preprocessing for each pane

-B option allows to run another command before processing -c option.

$ xpanes -B 'echo Preprocessing' -c 'echo Test' _
    +-------------------------------+
    │$ echo Preprocessing           │
    │Preprocessing                  │
    │$ echo Test                    │
    │Test                           │
    │                               │
    │                               │
    │                               │
    +-------------------------------+

-B and -c are similar options. However, -B can be used multiple times.

$ xpanes -B 'echo Pre1' -B 'echo Pre2' -B 'echo Pre3' -c 'echo {}' A B C D
    +-------------------------------+------------------------------+
    │$ echo Pre1                    │$ echo Pre1                   │
    │Pre1                           │Pre1                          │
    │$ echo Pre2                    │$ echo Pre2                   │
    │Pre2                           │Pre2                          │
    │$ echo Pre3                    │$ echo Pre3                   │
    │Pre3                           │Pre3                          │
    │$ echo A                       │$ echo B                      │
    +-------------------------------+------------------------------+
    │$ echo Pre1                    │$ echo Pre1                   │
    │Pre1                           │Pre1                          │
    │$ echo Pre2                    │$ echo Pre2                   │
    │Pre2                           │Pre2                          │
    │$ echo Pre3                    │$ echo Pre3                   │
    │Pre3                           │Pre3                          │
    │$ echo C                       │$ echo D                      │
    +-------------------------------+------------------------------+

It is helpful to customize default xpanes behavior with alias. See Use alias.

Layout of panes

Columns and rows

-C and -R options are useful to change tha layout of panes.

A number of columns can be specified by -C (or --cols) option. Here is the example that panes are organized in 2 columns.

$ xpanes -C 2 AAA BBB CCC DDD EEE FFF GGG HHH III

The result is like this.

    +------------------------------+------------------------------+
    │$ echo AAA                    │$ echo BBB                    │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo CCC                    │$ echo DDD                    │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo EEE                    │$ echo FFF                    │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo GGG                    │$ echo HHH                    │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+

As you may expect, -R (or --rows) option can fix the number of rows.

$ xpanes -R 5 AAA BBB CCC DDD EEE FFF GGG HHH

Panes are organized in 5 rows.

    +------------------------------+------------------------------+
    │$ echo AAA                    │$ echo BBB                    │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo CCC                    │$ echo DDD                    │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo EEE                    │$ echo FFF                    │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo GGG                                                   │
    │                                                             │
    +-------------------------------------------------------------+
    │$ echo HHH                                                   │
    │                                                             │
    +-------------------------------------------------------------+

Even if the number of arguments is not multiple of provided number, the number of panes on each row is adjusted to be as close as possible.

Set columns in bulk

--bulk-cols accepts comma-separated numbers. Each number is corresponding to the number of columns of each row.

$ xpanes --bulk-cols=1,3,1,2,5 {A..L}

Here is the result.

    +-------------------------------------------------------------+
    │$ echo A                                                     │
    │                                                             │
    +-------------------------------------------------------------+
    │$ echo B            │$ echo C            │$ echo D           │
    │                    │                    │                   │
    +-------------------------------------------------------------+
    │$ echo E                                                     │
    │                                                             │
    +-------------------------------------------------------------+
    │$ echo F                      │$ echo G                      │
    │                              │                              │
    +-------------------------------------------------------------+
    │$ echo H     │$ echo I    │$ echo J    │$ echo K   │$ echo L │
    │             │            │            │           │         │
    +-------------------------------------------------------------+

The number of argument must equal to the sum of the comma-separated numbers. In this example, the sum of the numbers of --bulk-cols is 12 (1 + 3 + 1 + 2 + 5 = 12) because there are 12 characters from A to L.

Layout presets

-l option is also useful to change the layout of panes. For example, to line up panes vertically, put ev (it is corresponding to even-vertical in tmux manual) followed by -l.

$ xpanes -l ev -c "{}" "top" "vmstat 1" "watch -n 1 df"

It would be like this.

    +-------------------------------------------------------------+
    │$ top                                                        │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    +-------------------------------------------------------------+
    │$ vmstat 1                                                   │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    +-------------------------------------------------------------+
    │$ watch -n 1 df                                              │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    +-------------------------------------------------------------+

With same way, eh (even-horizontal), mv(main-vertical) and mh(main-horizontal) are available. Please refer to xpanes --help also.

Pipe mode

Pipe mode is activated when xpanes command is accepting standard input. With this mode, xpanes behaves like UNIX xargs.

# Pipe mode
$ seq 3 | xpanes

With this command line, the output would be like this.

    +------------------------------+------------------------------+
    │$ echo 1                      │$ echo 2                      │
    │1                             │2                             │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ echo 3                                                     │
    │3                                                            │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    +------------------------------+------------------------------+

Pipe mode has two features.

  1. xpanes's argument will be the common command line which will be used within all panes (this is same as the -c option's argument in Normal mode).
  2. Each line provided by standard input is corresponding to the each pane's command line (this is corresponding to normal argument of xpanes in Normal mode).
# The command line generates some numbers.
$ seq 4
1
2
3
4

# Add those numbers to xpanes command.
$ seq 4 | xpanes seq

The result will be like this.

    +-------------------------------+------------------------------+
    │$ seq 1                        │$ seq 2                       │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    +-------------------------------+------------------------------+
    │$ seq 3                        │$ seq 4                       │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    +-------------------------------+------------------------------+

Off-course, -c and -I options are available.

$ seq 4 | xpanes -c 'seq {}'
## xpanes seq
##    and
## xpanes -c 'seq {}'
##    are same.

However, giving both -c and any arguments causes error. Because the command cannot decide which argument should be used.

$ echo test | xpanes -c 'echo {}' echo
xpanes:Error: Both arguments and other options (like '-c', '-e') which updates <command> are given.

Connecting to multiple hosts given by ~/.ssh/config

Pipe mode allows you to make combinations between tmux and other general UNIX commands. For example, let's prepare ~/.ssh/config file like this.

Host host1
    User user1
    HostName 192.168.0.2
    IdentityFile ~/.ssh/id_rsa

Host host2
    User user2
    HostName 192.168.0.3
    IdentityFile ~/.ssh/id_rsa

Host host3
    User user3
    HostName 192.168.0.4
    IdentityFile ~/.ssh/id_rsa

Parse host name with general UNIX commands.

$ cat ~/.ssh/config | awk '$1=="Host"{print $2}'
host1
host2
host3

Giving the results to xpanes ssh command.

$ cat ~/.ssh/config | awk '$1=="Host"{print $2}' | xpanes ssh

The results would be like this.

    +------------------------------+------------------------------+
    │$ ssh host1                   │$ ssh host2                   │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    │                              │                              │
    +------------------------------+------------------------------+
    │$ ssh host3                                                  │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    │                                                             │
    +------------------------------+------------------------------+

Operate session

Recover disconnected session

You may restore the tmux session created by xpanes even if it is unexpectedly disconnected from your terminal. xpanes creates ~/.cache/xpanes/socket.<PID> file as socket file by default.

Try to find socket file like this.

$ ls ~/.cache/xpanes/socket.*
/home/user/.cache/xpanes/socket.1234

If you find any socket files, try to attach it. The session might be recovered.

$ tmux -S /home/user/.cache/xpanes/socket.1234 attach

Share terminal sessions with others

You can specify the socket file name with -S option. Importing this socket file, different users can share their screens each other.

  • user1
[user1@host] $ xpanes -S /home/user1/mysocket a b c d ...
  • user2
[user2@host] $ tmux -S /home/user1/mysocket attach

... then, user1 and user2 can share their screen.

FORMAT

File name of log file generated by --log option can be changed by --log-format=FORMAT.

Default value of FORMAT is [:ARG:].log.%Y-%m-%d_%H-%M-%S.

Interpreted sequences are:

  • [:PID:] -- Process id of the tmux session
  • [:ARG:] -- Argument name

In addition, sequences same as date(1) are available.

For example:

  • %Y -- year (e.g, 1960)
  • %m -- month (e.g, 01)
  • %d -- date (e.g, 31)

And etc.

Other sequences are also available. Refer to date(1) manual.

Use alias

Get index number

As mentioned before, -B option is helpful to improve your xpanes with alias. For example, define the alias like this.

Alias:

_tmp='INDEX=`tmux display -pt "${TMUX_PANE}" "#{pane_index}"`'
alias xpanes="xpanes -B '${_tmp}'"

After that, execute this command.

$ xpanes -sc 'echo $INDEX' _ _ _ _
    +-------------------------------+------------------------------+
    │$ echo $INDEX                  │$ echo $INDEX                 │
    │0                              │1                             │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    +-------------------------------+------------------------------+
    │$ echo $INDEX                  │$ echo $INDEX                 │
    │2                              │3                             │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    │                               │                              │
    +-------------------------------+------------------------------+

As shown above, $INDEX has the index number of pane. This technique is helpful to avoid that all the commands start simultaneously. To wait each command start every second, just do it with the above alias.

$ xpanes -B 'sleep $INDEX' -c 'command {}' argA argB argC ...

See wiki > Alias examples for more useful examples.

Shell variables

xpanes refers to following shell variables. Add the statement to your default shell's startup file file (i.e .bashrc, .zshrc) to change them as you like.

XDG_CACHE_HOME

tmux-xpanes follows XDG Base Directory Specification. XDG_CACHE_HOME is $HOME/.cache by default. Therefore, $HOME/.cache/xpanes directory is used to store temporary data by default.

TMUX_XPANES_EXEC

DEFAULT VALUE: tmux

It is preferentially used as a internal tmux command. It is helpful if you want to use specific tmux version for xpanes, or enable specific options always.

Example:

export TMUX_XPANES_EXEC="/usr/local/bin/tmux1.8 -2"
# => xpanes command calls "/usr/local/bin/tmux1.8 -2" internally.

TMUX_XPANES_LOG_DIRECTORY

DEFAULT VALUE: $HOME/.cache/xpanes/logs

Path to store log files generated by --log option. It is ignored if the path is explicitly given by --log=.

TMUX_XPANES_LOG_FORMAT

DEFAULT VALUE: [:ARG:].log.%Y-%m-%d_%H-%M-%S

Format of the log file name generated by --log option. It is ignored if the format is explicitly given by --log-format=.

Example:

export TMUX_XPANES_LOG_FORMAT="[:ARG:]_mylog.log"

TMUX_XPANES_PANE_BORDER_FORMAT

DEFAULT VALUE: #[bg=green,fg=black] #T #[default]

It defines format of the pane's title. See FORMATS section in man of tmux for further details. It overwrites tmux's pane-border-format in the xpanes's session.

There are some examples here.

TMUX_XPANES_PANE_BORDER_STATUS

DEFAULT VALUE: bottom

It defines location of the pane's title. It overwrites tmux's pane-border-status in the xpanes's session.

Example:

# Change value from bottom to top
export TMUX_XPANES_PANE_BORDER_STATUS="top"

TMUX_XPANES_PANE_DEAD_MESSAGE

DEFAULT VALUE: \033[41m\033[4m\033[30m Pane is dead: Press [Enter] to exit... \033[0m\033[39m\033[49m

It defines the message that displayed when a process exits with -s option enabled.

The message is underlined black character on the red background (see Ansi escape codes) by default.

Example:

## Set green color
export TMUX_XPANES_PANE_DEAD_MESSAGE='\033[32m=== EXIT ==='

... and let's play!

Contributing

Please check out the CONTRIBUTING about how to proceed.

Testing

Please note the following points before running the test.

  • Run it from outside of tmux session
  • Set allow-rename option off

Follow this.

## Clone repository together with shunit2 (kward/shunit2)
$ git clone --recursive https://github.com/greymd/tmux-xpanes.git
$ cd tmux-xpanes

## Suppress window name change
$ echo 'set-window-option -g allow-rename off' >> ~/.tmux.conf
$ echo 'set-window-option -g automatic-rename off' >> ~/.tmux.conf

## Run smoke test
$ bash test/cases_smoke.sh

## => Testing will start ...

License

The scripts is available as open source under the terms of the MIT License.

Donation

If this project help you reduce time, you can give me a cup of coffee :)

Donation

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