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Full Discussion: Executing multiple ssh commands inside a shell simultaneously
Top Forums Shell Programming and Scripting Executing multiple ssh commands inside a shell simultaneously Post 302745913 by rbatte1 on Tuesday 18th of December 2012 10:49:18 AM
Old 12-18-2012
How about:-
Code:
ssh user1@server1 "grep xxxx logs" > server1.log &
ssh user1@server2 "grep xxxx logs" > server2.log &
ssh user1@server3 "grep xxxx logs" > server3.log &
wait

This should fire them off and wait for all you background processes to finish before returning control. You can then read the log files to see what you got.

Be careful, as it will wait for all background processes, so if you were to set up a quick check from the same session and did a
Code:
touch server1.log
tail -f server1.log &

... and then ran your script, it would wait until your tail had completed.


I hope that this is useful.

Robin
Liverpool/Blackburn
UK
 

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LEARN ABOUT LINUX

zegrep

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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