jsh - Joey's Shellscript Library
A diverse library of shellscripts. Run at your own risk.
Many of these scripts run standalone, but some of them require other scripts to be on the PATH.
source jsh/startj or
source jsh/startj-simple to setup your PATH so they will all run fine. (See detailed instructions below.)
jdoc <jsh_command> | <text> Show or search documentation (like man for jsh scripts) et <jsh_command> Edit a script ("Edit tool" - so old it used to be a .BAT!)
Scripts to make my interactive shell look pretty (colourful and informative)
. xttitleprompt Show information in your terminal window . hwipromptforbash / forzsh My pretty prompt . lscolsinit Loads a comprehensive color scheme for `ls`
These are sourced automatically if you run
jsh/jsh or source
Please note that all my rc files now live separately https://github.com/joeytwiddle/rc_files. For example you may obtain a nice set of
lscolsinit from there.
Scripts to make my interactive shell easier to use
. dirhistorysetup.bash / .zsh Provide `b` and `f` and `dirhistory` . bashkeys / zshkeys Ctrl-D/F/R/T/X/V/Z/B/O to jump and delete small/large words cd <partial_path> typo helper: autocompletes partial matches, or shows alternatives when multiple matches h [<pattern>] provides fast searching of history .. / ... / .... shortcuts for cd ../../.. etc. . autocomplete_from_man Tries to provide tab-completion for any command, by peeking at the command's man page
Also handy when working from the cmdline:
jman - Popup a man page in a separate terminal window japropos - Search a bunch of things, not just man pages
Scripts for composing shell commands
For use on the command-line or when writing actual scripts. Most of the following read a list from standard in (assumes inputs are separated by newlines):
| withalldo <cmd...> | foreachdo <cmd...> | dog <target_file> Atomic write, does not clobber until the end, safe to use after cat! | striptermchars Remove ANSI color codes | trimempty Remove empty/blank lines | removeduplicatelines Use removeduplicatelinespo to preserve order | takecols <column_numbers...> Like cut but no params to remember! Assumes fields are separated by whitespace. | dropcols <column_numbers...> Removes the specified columns, keeps the rest | beforefirst <regexp> Take portion of each line before pattern | afterlast <regexp> or after pattern | fromline [-x] <regexp> Take all lines after or before given pattern | toline [-x] <regexp> [-x] means exclude the matching line | prependeachline <txt_to_prepend> Puts the given text before each line of input | numbereachline Puts a number before each line of input | dateeachline [-fine] Puts the date and time before each line of input (useful after tail, or for logging) | dirsonly Retains only those lines of input which are directories | filesonly Retains only those lines of input which are files | sortfilesbydate | sortfilesbysize | list2regexp | chooserandomline chooserandom <args...> | countlines echolines <glob> waitforkeypress filesize <file> mp3duration <file> imagesize <file>
Scripts for shellscripting
Rarely used on the commandline.
. importshfn <shellscript> Creates a function from the shellscript, so it will run quicker if you call it many times. YMMV . require_exes <exe_names...> exits if the gives exes are not on your PATH
memo [ -t "N weeks" ] <slow_command...> Remembers the first output and gives it back on subsequent calls diffdirs <dirA> <dirB> diffgraph <related_files...> Shows which files are most closely related, by numerical distance (does not actually draw a graph yet!) jwatch <cmd> Show lines added to or removed from the cmd's output jwatchchanges [-fine] <cmd> Show the cmd output, highlighting changes (more like watch(1))
monitorps Report new/closed processes (useful if you notice a lot of forks but don't know why) listopenports [ <process_name> ] listopenfiles [ <process_name> ] whatisaccessing <file/folder> whatisonport <port> whatsblockingaudio whatsplaying traffic_shaping_monitor Monitor what /sbin/tc classes are doing findjob <process_name>
findbrokenlinks dusk show disk usage by folder (du -sk | sort) duskdiff del <files/folders...> moves files to trash, reclaimable in case of accident rmlink <symlinks...> safer than rm: only removes files which are symlinks lazymount <file_to_mount> | diffhighlight add colours to diffs/patches sedreplace <search> <replace> <files...> renamefiles <search_pattern> <replace_pattern> [<files...>] |sh editfilenames opens Vim to let you edit filenames worddiff / wordpatch xsnapshot getxwindimensions put_current_xwindow
convert_to_mp3 <any_audio_or_video_file> convert_to_ogg <any_audio_or_video_file> reencode_video_to_x264 <video_file> | txt2speech makes festival sound slightly less stupid wp <term> fast Wikipedia search (short summary)
- ... and 1000 more scripts that shouldn't be here
Install and setup
First clone the repository:
$ git clone https://github.com/joeytwiddle/jsh
Now create all the symlinks:
$ jsh/jsh jsh/code/shellscript/init/refreshtoollinks
OK setup is now complete.
If you want jsh to always load when you start a shell, add the following lines to your
export JPATH="$HOME/jsh" source "$JPATH/startj"
Additional step for Mac OS X users
If you want to run jsh on Mac OS X then you should:
$ brew install coreutils gnu-sed findutils
Then add the following lines to your
.zshrc, before the
JPATH lines we inserted earlier:
export PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH" export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH" export PATH="/usr/local/opt/findutils/libexec/gnubin:$PATH"
This is because Jsh makes heavy use of GNU utils such as
sed. Although many of these programs are distributed with Mac OS X, they are BSD versions and do not accept exactly the same arguments.
PATH will be provided to any non-Jsh commands you call from within a Jsh shell. So far this has caused me no problems. I have been able to run
rails from inside or outside Jsh.)
Start a fresh jsh shell with:
Ctrl-D to leave it.
Alternatively, you can load jsh directly into your current shell:
If you just want the scripts on your PATH, and crucial initialisation, but none of the visual shell tweaks:
(This actually does not do much more than setting
$JPATH and adding
$JPATH/tools to your
If you want to run just one jsh command and then return to your current shell:
jsh/jsh <jsh_command> [ <args...> ]