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Full Discussion: remove a path from PATH environment variable
Top Forums Shell Programming and Scripting remove a path from PATH environment variable Post 302361809 by madhu84 on Wednesday 14th of October 2009 06:53:34 AM
Old 10-14-2009
Here is the out put

Code:
$ echo $PATH
/usr/local/bin:/usr/bin:test/rmve:/usr/games
$ echo $rmv
test/rmve
$ PATH=$(echo $PATH | sed -e 's;:\?'$rmv';;' -e 's;'$rmv':\?;;')
$export PATH
$ echo $PATH
/usr/local/bin:/usr/bin:test/rmve:/usr/games

There is no error reported


if I put the line in a script and execute as you suggested then the output is

Code:
$ . ./test.sh
+ + sed -e s;:\?test/rmve;; -e s;test/rmve:\?;;
+ echo /usr/local/bin:/usr/bin:test/rmve:/usr/games
PATH=/usr/local/bin:/usr/bin:test/rmve:/usr/games

the test.sh has

Code:
set -x
PATH=$(echo $PATH | sed -e 's;:\?'$rmv';;' -e 's;'$rmv':\?;;')
export PATH

Last edited by madhu84; 10-14-2009 at 08:00 AM..
 

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LEARN ABOUT DEBIAN

surfraw-update-path

SURFRAW-UPDATE-PATH(1)					User Contributed Perl Documentation				    SURFRAW-UPDATE-PATH(1)

NAME

       surfraw-update-path - updates PATH in shell config files

SYNOPSIS

       surfraw-update-path [-add] [-remove] [-check] [-sys] [-all] [-help] [-shell=SHELL]

DESCRIPTION

       surfraw-update-path adds the surfraw elvi directory (/usr/lib/surfraw) to your PATH in your shell's config file.

       Currently it supports bash, sh, csh, tcsh, ash, dash, ksh, pdksh, zsh, rc, and es

       Don't forget to login again or source your login files for it to take effect.

OPTIONS

       -check
	   Checks to see if the surfraw config code is present.  This is the default.

       -add
	   Adds the surfraw config code.

       -remove
	   Removes the surfraw config code

       -sys
	   Updates the system-wide shell config instead of the user.  Must be done as root.

       -shell=SHELL
	   Selects the shell to configure. Defaults to the value of the $SHELL environment variable.

	   Currently supported shells are:

	   sh, ash, bash, dash, csh, tcsh, ksh, pdksh, zsh, rc, and es.

       -all
	   Attempts to configure the startup files for all known shells

       -help
	   Gives a usage message

RETURN VALUE

       -check returns 0 if the surfraw code is present in the file, 1 if it is not found, or 2 on error.

       All other options return 0 on success, or 2 on error.

ENVIRONMENT

       SHELL
	   Used to determine which shell to configure, if -shell is not given.

       HOME
	   Used to find users config files.

       ENV Used by posix-compliant shells to specify a startup rc file.

       ZDOTDIR
	   Used to find user config files for zsh. If not set, defaults to HOME.

SEE ALSO

       surfraw(1), sh(1), ash(1), bash(1), dash(1), csh(1), tcsh(1), ksh(1), pdksh(1), zsh(1), rc(1), es(1)

AUTHOR

       Ian Beckwith <ianb@erislabs.net>

perl v5.12.4							    2011-07-12						    SURFRAW-UPDATE-PATH(1)
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