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Full Discussion: [Solved] Help needed to have changing value to the command prompt string variable PS1
Top Forums UNIX for Dummies Questions & Answers [Solved] Help needed to have changing value to the command prompt string variable PS1 Post 302630075 by neutronscott on Wednesday 25th of April 2012 10:54:21 AM
Old 04-25-2012
with this double quoting, look at PS1 after assignment:

Code:
$ PS1="[$PWD $(git branch | grep '*') $] "
[/home/mute  $] declare -p PS1
declare -- PS1="[/home/mute  \$] "

Your variables are expanded inside of a double-quote before assignment. If you escape the $ then it will be stored inside of PS1. You can also use single quotes to avoid expansion, but you have some in there so those are the 1 character you need to treat special inside single quotes:

Code:
$ PS1='[$PWD $(git branch | grep '\''*'\'') $] '
fatal: Not a git repository (or any of the parent directories): .git
[/home/mute  $]

Having a command execute for each prompt is a bit much. Also maybe you'd like to make it a function and handle those fatal errors in case you leave a git branch.

Code:
[/home/mute/code  $] PS1='[$PWD $(git branch 2>/dev/null | grep '\''*'\'') $] '
[/home/mute/code  $] cd Twitter.awk/
[/home/mute/code/Twitter.awk * master $]

et voila!?
This User Gave Thanks to neutronscott For This Post:
royalibrahim
 

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LEARN ABOUT SUSE

git-mergetool

GIT-MERGETOOL(1)						    Git Manual							  GIT-MERGETOOL(1)

NAME

       git-mergetool - Run merge conflict resolution tools to resolve merge conflicts

SYNOPSIS

       git mergetool [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>]...

DESCRIPTION

       Use git mergetool to run one of several merge utilities to resolve merge conflicts. It is typically run after git merge.

       If one or more <file> parameters are given, the merge tool program will be run to resolve differences on each file. If no <file> names are
       specified, git mergetool will run the merge tool program on every file with merge conflicts.

OPTIONS

       -t <tool>, --tool=<tool>
	   Use the merge resolution program specified by <tool>. Valid merge tools are: kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff,
	   ecmerge, diffuse, tortoisemerge, opendiff, p4merge and araxis.

	   If a merge resolution program is not specified, git mergetool will use the configuration variable merge.tool. If the configuration
	   variable merge.tool is not set, git mergetool will pick a suitable default.

	   You can explicitly provide a full path to the tool by setting the configuration variable mergetool.<tool>.path. For example, you can
	   configure the absolute path to kdiff3 by setting mergetool.kdiff3.path. Otherwise, git mergetool assumes the tool is available in PATH.

	   Instead of running one of the known merge tool programs, git mergetool can be customized to run an alternative program by specifying
	   the command line to invoke in a configuration variable mergetool.<tool>.cmd.

	   When git mergetool is invoked with this tool (either through the -t or --tool option or the merge.tool configuration variable) the
	   configured command line will be invoked with $BASE set to the name of a temporary file containing the common base for the merge, if
	   available; $LOCAL set to the name of a temporary file containing the contents of the file on the current branch; $REMOTE set to the
	   name of a temporary file containing the contents of the file to be merged, and $MERGED set to the name of the file to which the merge
	   tool should write the result of the merge resolution.

	   If the custom merge tool correctly indicates the success of a merge resolution with its exit code, then the configuration variable
	   mergetool.<tool>.trustExitCode can be set to true. Otherwise, git mergetool will prompt the user to indicate the success of the
	   resolution after the custom tool has exited.

       -y, --no-prompt
	   Don't prompt before each invocation of the merge resolution program.

       --prompt
	   Prompt before each invocation of the merge resolution program. This is the default behaviour; the option is provided to override any
	   configuration settings.

AUTHOR

       Written by Theodore Y Ts'o <tytso@mit.edu[1]>

DOCUMENTATION

       Documentation by Theodore Y Ts'o.

GIT

       Part of the git(1) suite

NOTES

	1. tytso@mit.edu
	   mailto:tytso@mit.edu

Git 1.7.1							    07/05/2010							  GIT-MERGETOOL(1)
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