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Full Discussion: Script to execute command to get info from multiple servers
Top Forums Shell Programming and Scripting Script to execute command to get info from multiple servers Post 302718209 by jim mcnamara on Friday 19th of October 2012 10:11:20 AM
Old 10-19-2012
Create a list of servers, call it servers.dat
Code:
> ./present
> ./not-present
while read node
do
      ssh $node 'sudo  grep -q  "elevator=noop" /etc/grub.conf'
      if [ $? -eq 0 ] ; then
         echo "$node" >> ./present
      else
         echo "$node" >> ./not-present
      fi
done < servers.dat

This requires that your account be set up to sudo on all of the servers, and that you have set up ssh-keys (from the box where you execute the above script) for your account on all servers in the respective ~/.ssh/authorized_keys files.
 

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LEARN ABOUT REDHAT

grub

GRUB(8) 								FSF								   GRUB(8)

NAME

       grub - the grub shell

SYNOPSIS

       grub [OPTION]...

DESCRIPTION

       Enter the GRand Unified Bootloader command shell.

       --batch
	      turn on batch mode for non-interactive use

       --boot-drive=DRIVE
	      specify stage2 boot_drive [default=0x0]

       --config-file=FILE
	      specify stage2 config_file [default=/boot/grub/grub.conf]

       --device-map=FILE
	      use the device map file FILE

       --help display this message and exit

       --hold wait until a debugger will attach

       --install-partition=PAR
	      specify stage2 install_partition [default=0x20000]

       --no-config-file
	      do not use the config file

       --no-curses
	      do not use curses

       --no-floppy
	      do not probe any floppy drive

       --no-pager
	      do not use internal pager

       --preset-menu
	      use the preset menu

       --probe-second-floppy
	      probe the second floppy drive

       --read-only
	      do not write anything to devices

       --verbose
	      print verbose messages

       --version
	      print version information and exit

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full documentation for grub is maintained as a Texinfo manual.  If the info and grub programs are properly installed at your site, the
       command

	      info grub

       should give you access to the complete manual.

grub (GNU GRUB 0.93)						   December 2002							   GRUB(8)
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