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Show and browse in your working directory history shell ( bhistory, cd +, cd - , cd :<i> )
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README.md

Browsing History Shell

Build Status

alt text

It's very useful, it becomes quickly essential and it takes less than one minute to install. See Installation.

Else you can try with Docker Hub, go to https://hub.docker.com/r/glegoux/bhist/.

Installation

This is only for Bash Shell version 4.3+ (but it's easy to adapt for a Shell Bourne or others ...).

  • See your current shell type with cat /etc/passwd | grep $USER or echo $SHELL.
  • See your current version with bash --version .

If you haven't that, you can download bash shell at http://www.gnu.org/software/bash/.

  1. Download this git repository :
git clone --depth 1 https://github.com/glegoux/browsing-history-shell.git

There are hidden files, see that with ls -a. Or download just the script :

cd ~ && wget https://raw.githubusercontent.com/glegoux/browsing-history-shell/master/.bashrc_bhist
  1. Only if you chose to download this git repository, create symbolic links :
ln -s "$PWD"/.bashrc_bhist ~/.bashrc_bhist
  1. Insert the following lines into your ~/.bashrc :
# enable browsing history
if [ -f ~/.bashrc_bhist ]; then
    . ~/.bashrc_bhist
fi
  1. You can update your script with git pull.

Of course, you also can just copy the content of each file without creating symbolic links, but the automatic updating will be more complicated than git pull.

Let's go and enjoy.

Best Regards, don't hesitate to write me, to fix bugs, or improve behaviours.

Usage

After cd [$1], if the content of the new current directory is not too long, show it.

The different extra commands are :

  • bhistory : Show the browsing history of the current bash shell.

  • cd - : Go into the previous working directory in your browsing history.
    By default, it is cyclic, cd - + cd - = cd ., no longer.

  • cd + : Go into the next working directory in your browsing history.

  • cd :<i> : Go into the <i>th directory in your browsing history.

Motivation

Everybody knows history command to show bash command history. Why is there not history for browsing ? Personally, when I am on a server with SSH connection, I always forget where I was before, in what working directory. Also I advise you to put the current working directory on your prompt (for instance PS1="\u@: \w \\$ " where \w is your current working directory) and to install this library.

Synopsis

The goal is to show your browsing history as a browsing web, but in your shell environment. You can easily go to the previous and next working directory and show your browsing history.

Files

  • ~/.bashrc : bashrc file where this extension is installed.
  • ~/.bashrc_bhist : this bashrc extension.

Environment variables

  • $BHIST_DIRS : the browsing history, it's an array.
  • $BHIST_CUR_INDEX : Your position is the browsing history, it's an integer.
  • $BHIST_LEN : the length of the browsing history, it's an integer.

Functions

  • __bhist_history : show the browsing history.
  • __bhist_changedir [$1] : execute an overlayer of 'cd' allowing to update each time the history.

Aliases

  • cd
  • bhistory

Notes

When you are doing cd, if the standard output of ls is less than 4 lines, then a ls is executed. Pay attention to put a redirection to /dev/null if you use cd in another context.

If the current directory includes a folder :<i>, then this foldername is in conflict with the command cd :<i>. If you use cd :<i>, there is a warning in the error output, use cd ./:<i> to go to this folder.

If you are browsing in your browsing history, this isn't stored in your browsing history. You can do cd . to have the last location a new time in your browsing history.

If you do cd +, cd - or cd :<i> out of browsing history range, there is an error.

The consecutive location duplicates in the browsing history are deleted automatically.

Aliases are disabled in shell script by default, you can enable cd alias in a shell script with shopt -s expand_aliases (see http://www.gnu.org/software/bash/manual/bash.html#The-Shopt-Builtin). If you activate this shell option, check that with shopt, then type cd or alias cd.

You can comment or delete the matching lines in .bashrc_bhist, in order to have your wanted behaviour (no warning for instance).

Coding Style

Try to use https://google.github.io/styleguide/shell.xml.

Tests

There is a library to do unit test in bash.

Use docker container for interactive and unit tests. Launch the script ./run_with_docker.
See test/.

11/11, 100%, All unit tests OK.

Note

License

Released under the MIT License, see LICENSE.

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