Surprising behaviour of the perl debugger for wantarray()

When you are running a perl script in the debugger, do not expect wantarray() to return the same thing it would if not running in the debugger.

If you break execution at a breakpoint, wantarray() seems to return 1 when it wouldn't otherwise.

Show the full patch for a git merge commit

Use the undocumented -m and -p options to show the main commit ID.
Why are these not in the help!?

git show -m -p 25172c1

Specify git config temporarily for one command

Use -c after the git call, before any other options:

e.g. to override your core.pager="less -r" setting:

    git -c 'core.pager=cat' log -n 3 --abbrev-commit

(source)

How to apply a named stash in git

git stash apply stash^{/foo1}

where foo1 is the full name of your stash (keep names short, with no spaces).

(source)

How to find who/what is changing a file in linux

A list:

• inotifywait - simple, attended
• auditctl - powerful, old school
• file system monitoring - more involved, more complete

See https://pinboard.in/u:random/t:audit