Shell Programming and Scripting

I need to perform the following substitutions and have been struggling to determine if or how I can do this with sed or perl.

I need to change the string foo(bar) to moo(bar,0) wherever this occurs in a file.

Is there a way to do this? I'm thinking there might be a wildcard of some sort that would do the following:

s/foo(*)/moo(*,0)/g

Thanks!

There is probably more to this than you are saying, but this will do what you are asking for.

Code:

s/foo\(([^()]+)\)/moo(\1,0)/g

Read up on backreferences in regular expressions if this seems somehow magical.

This is Perl s/// syntax; sed wants backslashes in different places. (On the other hand, Perl prefers $1 over \1 on the substitution side. If you "use strict" it will complain about this.)

Perfect era, thank you.

Now having read up on backreferences this makes a lot of sense and gives me ideas on how to do a few other things.

How about this !

If there are multiple occurrences on the same line, it will munch them.

That is, "foo(1); foo(2)" would be replaced with "moo(1); foo(2,0)" whereas you would probably like for it to produce "moo(1,0); moo(2,0)".