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Shell Programming and Scripting

Trapping $! output

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# 1  
Old 12-18-2007
Trapping $! output
hey all,

I have a script that creates and then distributes html files via scp on a 60 second cycle. On occasions the scp will hang and not complete with the cycle.

When running the scp command in the back ground it returns the PID. How do I trap $! in the script?

Code:
job=`echo $!` returns an error. 
-bash-3.00$ job=`echo $!` 
-bash: !`: event not found


What I want to be able to do is monitor how long the scp runs for, if it is still running 2 minutes after starting then it is hung (can't just ps for the scp command as the scp script is used by multiple applications).

Any ideas?

Cheers,
Neil
# 2  
Old 12-18-2007
just use it as $!

Code:
a=$!

# 3  
Old 12-18-2007
Easy....feel a bit stupid now.


Cheers,
Neil
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