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How to combine two variable strings?

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# 1  
Old 02-28-2013
How to combine two variable strings?
Hi,

I have two variables

Code:
 
pscmd="ps -exf | grep "
 
pid=15560

When I say

Code:
 
var=$( $pscmd $pid )
echo $var

it shows output of all processes on the OS rather than just 15560.

So, i guess it only executes "ps -exf | grep " rather than "ps -exf | grep 15560"

Can you please let me know whats wrong ?

I'm on HP -UX
# 2  
Old 02-28-2013
Code:
var=$( eval "$pscmd $pid" )

# 3  
Old 02-28-2013
This may work
Code:
var=$(ps -exf | grep $pid)

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