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Full Discussion: how to unsetenv ?
Top Forums UNIX for Dummies Questions & Answers how to unsetenv ? Post 10935 by wizard on Sunday 25th of November 2001 07:18:37 PM
Old 11-25-2001
When using setenv in csh, do not use =. The syntax is

setenv ENV_VAR value

where ENV_VAR is any environment variable you want to set (i.e. JAVA_HOME, etc.). I've always used set to set the PATH variable in csh. The syntax for set is

set PATH=( . . . )

That said, unsetenv should remove the environment variable from the shell environment completely. If you just want to reset the value, reissue the setenv command with the value you want to use for each environment variable.

Hope this helps.
 
shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)
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