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Top Forums Shell Programming and Scripting Confusion with "su -c" and quotes, user context switching? Post 302814169 by alister on Tuesday 28th of May 2013 10:43:12 PM
Old 05-28-2013
Quote:
Originally Posted by kchinnam
Code:
  
/home/userA>sudo /usr/bin/su - userB '/bin/ls' 
ksh: ls: cannot execute

That's asking ksh to interpret ls, which it cannot do because /bin/ls is not a ksh script; it's a binary executable.

Compare
Code:
ksh /bin/ls

versus
Code:
ksh -c /bin/ls

Regards,
Alister
This User Gave Thanks to alister For This Post:
 

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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/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/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list. Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)). FILES
/etc/shells lists shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.10 4 Jun 2001 shells(4)
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