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Lock
====
This program creates a lock directory to ensure two programs do no simulaneously execute
example GIF:
[example-footage](https://github.com/mutantturkey/lock/raw/master/lock.gif)
example:
calvin@barnabas:~/lock$ lock p
calvin@barnabas:~/lock$ lock p && echo 'UNLOCKED' &
[2] 22844
calvin@barnabas:~/lock$ rmdir p
* two seconds later *
calvin@barnabas:~/lock$
UNLOCKED
[2]- Done lock p && echo -e '\nUNLOCKED\n'
calvin@barnabas:~/lock$
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