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Grep or Awk from a non-terminating program

 
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# 1  
Old 12-28-2009
Grep or Awk from a non-terminating program
Hey all,

Does anybody know how to grep or awk from a non-terminating program. For example the program top which displays the process cpu usage, idle %,...etc. I was wondering if I can grep or awk certain fields from it.Smilie
The other thing I was wondering about is how to insert a CTRL-C command in a shell script, is it possible??

Thanks in advance
# 2  
Old 12-28-2009
Quote:
Originally Posted by ibrahimelkadi
Hey all,

Does anybody know how to grep or awk from a non-terminating program. For example the program top which displays the process cpu usage, idle %,...etc. I was wondering if I can grep or awk certain fields from it.Smilie
Yes,
you can. Just send the input to the awk interpreter.

Quote:
The other thing I was wondering about is how to insert a CTRL-C command in a shell script, is it possible??
You can run top in batch mode (so you don't need to send it Ctrl+C) On Linux it would be something like this:

Code:
top -bn10 | awk ...

Check your top implementation's man pages for the exact command on your system.
# 3  
Old 12-28-2009
Quote:
Originally Posted by ibrahimelkadi
The other thing I was wondering about is how to insert a CTRL-C command in a shell script, is it possible??
Code:
kill -INT pid

If for some reason the script is sending ^C (SIGINT) to itself, then "$$" can be used as the pid.
 
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