[Gllug] simple file matching

[n3lly b0y]

Hello all,

I recently had to match a list of items in one file with that of  
another. The lists were unordered and using diff or comm didn't work  
for me. I don't use perl or python typically so I hit the standard  
bash syntax and summoned:

for i in `cat file1`; do cat file2 | grep "$i" >> matches; done

results were okay (a couple of double entries for some reason) but I  
can't help feeling there was a better way to do this (without  
referring to other scripting languages) - esp. if both lists were  
very large.

How have you unix gurus defeated file/list matching using bash?

Cheers,
n
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