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The ‘-regex’ and ‘-iregex’ tests of find
allow
matching by regular expression, as does the ‘--regex’ option of
locate
. There are many different types of Regular Expression,
but the type used by find
and locate
is the same as is
used in GNU Emacs. Both programs provide an option which allows you
to select an alternative regular expression syntax; for find
this is the ‘-regextype’ option, and for locate
this is
the ‘--regextype’ option.
These options take a single argument, which indicates the specific regular expression syntax and behaviour that should be used. This should be one of the following: