When process gets killed you will be left with important.lock file still
there, and no other processes would be able to work.
Also when using timeout with -l option, then someone else could break
the lock: delete important.lock and create new important.lock file. So
command "rm -f" of the first process could delete someone's lock.
I found this solution:
lockfile -l90 important.lock || exit
ln -f important.lock important.$$ || exit
trap "[[ \$(stat -c %i important.lock) == \$(stat -c %i
important.$$) && -f important.$$ ]] && rm -f
important.lock important.$$" EXIT
...
access_"important"_to_your_hearts_content
...
This way you will not remove important.lock created by someone else and
you will see file important.$$ when lock was removed by force.
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