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 :: Mailing Lists

[ILUG] comparing files

[ILUG] comparing files

Niall O Broin niall at linux.ie
Mon Feb 2 12:57:45 GMT 2004


On Monday 2 February 2004, olearypj at rte.ie wrote:

>          I need to compare two VERY large files of names & extract the
>lines that are not common to both. The problem is that the same names
appear
>in different positions in both files. I promise I have tried diff,
sdiff etc,
>but they seem to compare the same lines in each file.

As a first cut,

cat file1 file2 | sort |uniq -u


which should work, provided that names are in the same form in each file
WRT spelling, case, leading / trailing spaces etc.



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