76 lines
2.9 KiB
Markdown
76 lines
2.9 KiB
Markdown
Liquid prompt -- A useful adaptive Bash prompt
|
|
==============================================
|
|
|
|
Liquid prompt is a smart prompt for the "Bourne-Again" Unix shell (bash).
|
|
|
|
The basic idea of the liquid prompt is to nicely display useful informations on
|
|
the shell prompt, only when they are needed. It adds carefuly chosen colors to
|
|
draw your attention on what differs from the normal context. Thus, you will
|
|
notice what changes, when it changes, because you do not become accommodated to
|
|
informations that are always displayed in the same way.
|
|
|
|
|
|
## FEATURES
|
|
|
|
If there is nothing special in the current context, the liquid prompt is close
|
|
to a default prompt:
|
|
|
|
`[user:~] $ `
|
|
|
|
If you have ran one command in background that is still running and that you are
|
|
in a git repository, on branch "myb":
|
|
|
|
`1r [user@server:~/liquidprompt] myb ± `
|
|
|
|
A liquid prompt displaying everything may look like this:
|
|
|
|
`b24% l42% 1s/1r/1t [user@server:~/ … /code/liquidprompt] master(3) 125 ± `
|
|
|
|
It displays:
|
|
|
|
* the average of the batteries remaining power, if it is under a given
|
|
threshold, with a colormap too;
|
|
* the average of the processors load, if it is over a given limit, with a
|
|
colormap that became more and more noticeable with increasing load;
|
|
* the number of detached `screen` sessions, if there is any;
|
|
* the number of attached sleeping jobs (when you interrupt a command with Ctrl-Z
|
|
and bring it back with `fg`), if there is any;
|
|
* the number of attached running jobs (commands started with a `&`), if there is
|
|
any;
|
|
* the current user, in bold yellow if it is root, in light white if it is not
|
|
the same as the login user;
|
|
* the current host, if you are connected via an SSH or telnet connection, with
|
|
different colors for each case;
|
|
* a green colon if the user has write permissions on the current directory,
|
|
a red one if he has not;
|
|
* the current directory in bold, shortened if it takes too much space, while
|
|
preserving the first two directories;
|
|
* the name of the current branch if you are in a version control repository
|
|
(git, mercurial or subversion), in green if everything is up to date, in red if
|
|
there is changes, in yellow if there is pending commits to push;
|
|
* the number of pending commits, if any;
|
|
* the error code of the last command, if it has failed in some way;
|
|
* a smart mark: ± for VCS directories, $ for simple user, a red # for root.
|
|
|
|
|
|
## USAGE
|
|
|
|
Include the file in your bash configuration, for example in your `.bashrc`:
|
|
|
|
`source liquidprompt.bash`
|
|
|
|
|
|
## PUT THE PROMPT IN A DIFFERENT ORDER
|
|
|
|
Most of the display is prepared in the `__set_bash_prompt` function, apart from
|
|
features that needs several colors (such as the load colormap). You can sort
|
|
what you want to see by editing the PS1 variable.
|
|
|
|
|
|
## KNOWN LIMITATIONS AND BUGS
|
|
|
|
* Does not display the number of commits to be pushed in Mercurial repositories.
|
|
* Subversion repository cannot display commits to be pushed, this is a
|
|
limitation of the Subversion versionning model.
|
|
|