https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223556
Bug ID: 223556
Summary: apropos(1) should use regular expression by default
for a keyword search
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: freebsd-bugs@FreeBSD.org
Reporter: wo...@freebsd.org
apropos does a keyword search. In the past the keyword was a regular expression
On FreeBSD 10 you can run:
# search for 'f.*bar'
$ apropos 'f.*bar' | wc -l
4
# or dump the database
apropos '.' | wc -l
5582
On FreeBSD12-current
$ apropos 'f.*bar' | wc -l
apropos: nothing appropriate
0
$ apropos '.' | wc -l
318
To use regular expression, you need to prefix the tilde now:
$ apropos '~f.*bar' | wc -l
2
apropos '~.' | wc -l
4488
I do not like this change. We are incompatible with anything before in FreeBSD,
and we are incompatible with the gnu tools on debian/ubuntu/centos.
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