One Line Command how to use pipe statements to execute and comment on multiple possible outcomes Post: 303041031

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Top Forums UNIX for Beginners Questions & Answers One Line Command how to use pipe statements to execute and comment on multiple possible outcomes Post 303041031 by Scrutinizer on Tuesday 12th of November 2019 12:34:56 PM

11-12-2019

Moderator

Quote:

Originally Posted by greavette

Thank you @Neo, I am interested in moving my script to another method of running. Ideally I will be using Ansible once we have that setup. For now this quick and dirty bash script I'm using/modifying is getting us over the hump of getting the detail we need now.

Thank you @Scrutinizer for your reply. Where would I put this | grep . code you suggested? I tried adding your suggestion as follows but the result is still a blank response:

Code:

INACTIVE_KERNELS=$(python -mplatform | grep -qi red && rpm -qa | grep '^kernel-[0-9]' |grep -vE `uname -r` | paste -sd \; || echo "Not Red Hat Server" | grep . | echo "Empty")

Thank you.

Try this modification to your code:

Code:

INACTIVE_KERNELS=$(python -mplatform | grep -qvi red && echo "Not Red Hat Server" || rpm -qa | grep '^kernel-[0-9]' |grep -vE `uname -r` | paste -sd \; | grep . || echo "No Inactive Kernels Found")

Last edited by Scrutinizer; 11-12-2019 at 01:49 PM..

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LEARN ABOUT MINIX

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)

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