perform action when pattern not found

[elcid2k3]

Hi,

I have the following problem: I want to search for a pattern in a file, if it is found the line will be replaced with something else; if it is not found I want to insert a line at the end of file.

Can you please give me some suggestions?

Thanks in advance!

 

[PHV]

And what have you tried so far ?

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[elcid2k3]

I would have tried something if I had the knowledge...
What I would like to know is how to perform an action when the pattern is not found. If it is too trivial I apologize... I will try to find a good awk book.

 

[PHV]

A starting point:
awk '
/pattern/{print "something else";f=1;next}
{print}
END{if(!f)print "line at the end"}
' /path/to/input > output

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[elcid2k3]

Thank you!