topic Re: Shell scripting - Storing command output in a variable in Operating System - HP-UX

Shell scripting - Storing command output in a variable

vinna — Sun, 30 Nov 2008 08:13:43 GMT

I am making a tool with shell script to report utilization. In the script, i am storing some command output in a variable. At the end of the script, i am printing the o/p stored in the variable. But it prints the varaible not exactly as the output of the actual command. In other words, it prints everything in single line one after after other.

Example:

Command output:
$ lspv | grep active | grep 15
hdiskpower15 0000792a05830e15 Ora0600 active
hdiskpower115 0000792a9c882ece Ora0600 active

$ opt_cmd=`lspv | grep active | grep 15`

$ echo $opt_cmd
hdiskpower15 0000792a05830e15 Ora0600 active hdiskpower115 0000792a9c882ece Ora0600 active

Can someone tell me is there any way i can store the output to a varibale exactly same as the command output.

Re: Shell scripting - Storing command output in a variable

Dennis Handly — Sun, 30 Nov 2008 08:27:53 GMT

Have you tried: echo "$opt_cmd"?

Otherwise you'll need to save the output in a file:
lspv | grep active | grep 15 > output
opt_cmd=$(< output)

Re: Shell scripting - Storing command output in a variable

vinna — Sun, 30 Nov 2008 08:31:39 GMT

I tried with "$opt_cmd". It works. Thanks

Re: Shell scripting - Storing command output in a variable

Dennis Handly — Sun, 30 Nov 2008 08:45:16 GMT

If you are happy with the answers, please read the following about assigning points:
http://forums.itrc.hp.com/service/forums/helptips.do?#33

Re: Shell scripting - Storing command output in a variable

James R. Ferguson — Sun, 30 Nov 2008 13:28:56 GMT

Hi:

You have to love these postings from AIX environments (not that it matters for this question) :-) I guess is shows how valuable a place the ITRC can be.

Regards!

...JRF...

Re: Shell scripting - Storing command output in a variable

Steven Schweda — Sun, 30 Nov 2008 18:22:32 GMT

> [...] I guess is shows how valuable a place
> the ITRC can be.

Or how thoroughly lost and confused its users
can be.