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Showing Alternate File Names
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Showing Alternate File Names
If you are comparing two files that have meaningless or uninformative names,
you might want diff to show alternate names in the header of the context and unified output
formats.
To do this, use the '
-L label' or '--label=label' option. The first time you give this option, its argument replaces the name
and date of the first file in the header; the second time, its argument
replaces the name and date of the second file. If you give this option more than
twice, diff reports an error. The '-L' option does not affect the file names in the pr header when the '-l' or'--paginate' option is used (see Paginating diff Output). The following are the first two lines of the output from 'diff -C2 -Loriginal -Lmodified lao tzu':
*** original
--- modified
0