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Top Forums Shell Programming and Scripting Regarding Redirecting a command's default error message in script Post 302491446 by methyl on Thursday 27th of January 2011 12:59:21 PM
Old 01-27-2011
Some changes.
Redirect both STDOUT (1) and STDERR (2).
Change the "for" into a "while" because "for" can break with a large number of arguments.
Save the value of $? immediately after executing the command.
Simplify the if test.

Code:
cat list | while read i
do
    id $i 1>/dev/null 2>/dev/null ; ERROR=$?
    if [ ${ERROR} -eq 0 ]
    then
         echo "ID $i exists"
    else
         echo "$i Does not exist" 
    fi
done

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INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME
installsieve - user utility for managing sieve scripts SYNOPSIS
installsieve DESCRIPTION
installsieve is a utility that allows users to manage their sieve scripts kept on the server. OPTIONS
-v <name> View script with the given name. The script if retrieved sucessfully is output to standard output. -l List all of the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active script. -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services. -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten. Upon sucessfully putting the script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since sieve names may not contain a '.'. -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option.. -d <name> Delete the sieve script on the server with <name>. -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen. -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already exists it is overwritten. -u <user> Userid/Authname to use for authentication; by default, the current user. CMU
Project Cyrus INSTALLSIEVE(1)
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