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Forum: UNIX for Beginners Questions & Answers 11-12-2019

Comparing two files and list the difference with common first line content of both files

3,707

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man diff: If your OS / shell...

man diff:

If your OS / shell don't offer "process substitution", try also:
sed 's/^# file.*/&\n\n&\n/' file2 | diff -y -b --suppress-common-lines - file1

Forum: UNIX for Beginners Questions & Answers 11-12-2019

Comparing two files and list the difference with common first line content of both files

3,707

Posted By

How far would $ diff -y -b...

How far would
$ diff -y -b --suppress-common-lines file1 <(sed 's/^# file.*/&\n\n&\n/' file2)
>
> # file: /local/test_1
...

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