01-06-2012
Read data from given filename or stream
I have a script that takes 2 parameters (say) as mandatory
script1.sh a b
The 3rd parameter can be filename which it should process or it can come through a pipeline stream
The script should work both ways:
script1.sh a b filec
or cat filec | script1.sh a b
How to put logic in the script?
If 3rd parameter is not passed then how can the script know it was fed data from filec thru pipe?
and what shell variable holds this information?
Thanks,
-srinivas yelamanchili
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NAME
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