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Top Forums Shell Programming and Scripting How to get a variables from two different txt files and need to run a command using that values? Post 302973746 by Corona688 on Friday 20th of May 2016 01:59:35 PM
Old 05-20-2016
This is why you're supposed to use the return code instead of making the computer swallow the human-readable error messages. There's lots of ways the printing could work, but only one way a return code works.

In this case, it must be printing these messages to standard error. That's the place things the computer isn't supposed to be handling like this go. We can force the script to intercept these things it's not supposed to handle with a redirection.

Code:
while read NODE PORT UID PWD
do
        cfsend n:"${NODE}" port:${PORT} uid:${UID}  pwd:${PWD} pn:CHCKDIR ud:5563 trtype:c rcmd:"pwd" 2>&1 | grep -iq "failed communicating with partner" && echo "PS is down on $NODE"
done < table > output.log 2>/dev/null

 

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PWD(1)								   User Commands							    PWD(1)

NAME
pwd - print name of current/working directory SYNOPSIS
pwd [OPTION]... DESCRIPTION
Print the full filename of the current working directory. -L, --logical use PWD from environment, even if it contains symlinks -P, --physical avoid all symlinks --help display this help and exit --version output version information and exit NOTE: your shell may have its own version of pwd, which usually supersedes the version described here. Please refer to your shell's docu- mentation for details about the options it supports. AUTHOR
Written by Jim Meyering. REPORTING BUGS
Report pwd bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report pwd translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
getcwd(3) The full documentation for pwd is maintained as a Texinfo manual. If the info and pwd programs are properly installed at your site, the command info coreutils 'pwd invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 PWD(1)
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