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I am trying to create a find command to find the files that git create when there is a conflicting rebase/merge.

.//Tools/tri_tri_intersect.h
.//Tools/tri_tri_intersect.cpp
.//Collisions/PBD/FiltersUtils_BACKUP_450361.cpp
.//Collisions/PBD/FiltersUtils_BASE_450361.cpp
.//Collisions/PBD/FiltersUtils_LOCAL_450361.cpp
.//Collisions/PBD/FiltersUtils_REMOTE_450361.cpp

From this list of files, I want a find command to select the last 4, the ones with BACKUP, LOCAL, REMOTE, BASE.

I have tried this find . -type f -regex '.+_((BACKUP)|(BASE)|(LOCAL)|(REMOTE))_.*' but doesn't work.

What would be the correct regex?

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  • Add -regextype egrep to your command. Commented Feb 2, 2023 at 20:04
  • That worked. Can you explain the difference between adding it and not adding it? Commented Feb 2, 2023 at 21:26
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    At least for the GNU implementation, the default regextype is emacs - which supports an ERE-style + quantifier, but grouping and alternation must be escaped like POSIX BRE: '.+_\(BACKUP\|BASE\|LOCAL\|REMOTE\)_.*'. See also Confusion with Linux find regex Commented Feb 2, 2023 at 21:33
  • ... but personally I'd probably avoid the confusion by sticking with standard glob patterns: find . -type f \( -name '*_BACKUP_*' -o -name '*_BASE_*' -o -name '*_LOCAL_*' -o -name '*_REMOTE_*' \) Commented Feb 2, 2023 at 22:06
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    So there are some webpages that allow to test regex patterns. regexr.com or regex101.com. I like them because they also teach what is each part of the regex doing, useful for debug it. But how can I know is they are emac, ERE, Posix BRE? Commented Feb 2, 2023 at 22:40

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