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Full Discussion: Redirecting the output
Top Forums Shell Programming and Scripting Redirecting the output Post 302896157 by web2moha on Friday 4th of April 2014 05:27:28 PM
Old 04-04-2014
Redirecting the output
For example,
if we run the below command,
Code:
symcfg list -thin -pool

, results in an output most of the times and if the out is generated i'm able to redirect the output to a file. but sometimes it doesnt result any output and even though the output is being redirected, i can see "No Thin Pools " on the screen.
script below is what i used

Code:
sudo symcfg list | grep -E 'Local|Remote' | awk '{print $1}' | while read line; do line="${line##*()}";

sudo symcfg -sid "$line" list -thin -pool -GB > /tmp/pooltmp/file_"$line".dat

exists=$(grep -c 'No|error' /tmp/pooltmp/file_"$line".dat)
if [[ $exists -gt 0 ]]
 then
 #echo "No Device Pools"
 echo ""$line"" >> /tmp/pooltmp/nodevicepools.dat
 else
 #echo "Device Pools are configured"
 echo ""$line"" >> /tmp/pooltmp/devicepools.dat
 fi

 done >> /tmp/pooltmp/output

 cat /tmp/pooltmp/devicepools.dat | while read line ; do line="${line##*()}";
 output=`awk 'END{print NR}' /tmp/pooltmp/file_"$line".dat`
 if [[ "$output" -le 2 ]]
 then
 echo ""$line"" >> /tmp/pooltmp/nopoolarrays.dat
 else
 echo ""$line"" >> /tmp/pooltmp/symmetrixid.dat
 fi
 done

 if [[ -f /tmp/pooltmp/symmetrixid.dat ]]
 then
 echo "Refer /tmp/pooltmp/symmetrixid.dat for the Local and Remote VMAX arrays with thin pools"
 else
        echo "No output file generated"
 fi

 if [[ -f /tmp/pooltmp/nopoolarrays.dat ]]
 then
 echo "Refer /tmp/pooltmp/nopoolarrays.dat for the Local and Remote VMAX arrays with no thin pools"
 else
        echo "No Output file generated"
 fi

Last edited by Scrutinizer; 04-04-2014 at 09:54 PM.. Reason: code tags
 

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LEARN ABOUT REDHAT

openvt

OPENVT(1)							     Linux 1.x								 OPENVT(1)

NAME

       openvt - start a program on a new virtual terminal (VT).

SYNOPSIS

       openvt [-c vtnumber] [-s] [-u] [-l] [-v] [--] command command_options

DESCRIPTION

       openvt  will  find the first available VT, and run on it the given command with the given command options, standard input, output and error
       are directed to that terminal. The current search path ($PATH) is used to find the requested command. If no command is specified  then  the
       environment variable $SHELL is used.

   OPTIONS
       -c vtnumber
	      Use the given VT number and not the first available. Note you must have write access to the supplied VT for this to work.

       -s     Switch to the new VT when starting the command. The VT of the new command will be made the new current VT.

       -u     Figure out the owner of the current VT, and run login as that user.  Suitable to be called by init. Shouldn't be used with -c or -l.

       -l     Make the command a login shell. A - is prepended to the name of the command to be executed.

       -v     Be a bit more verbose.

       -w     wait  for command to complete. If -w and -s are used together then openvt will switch back to the controlling terminal when the com-
	      mand completes.

       --     end of options to openvt.

NOTE

       If openvt is compiled with a POSIX (GNU) getopt() and you wish to set options to the command to be run, then you must  supply  the  end	of
       options -- flag before the command.

EXAMPLES

       openvt can be used to start a shell on the next free VT, by using the command:

       openvt bash

       To start the shell as a login shell, use:

       openvt -l bash

       To get a long listing you must supply the -- separator:

       openvt -- ls -l

HISTORY

       Earlier, openvt was called open.  It was written by Jon Tombs <jon@gtex02.us.es or jon@robots.ox.ac.uk>.  The -w idea is from "sam".

SEE ALSO

       chvt(1), doshell(8), login(1)

19 Jul 1996							       V1.4								 OPENVT(1)
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