Add man page #1
Description
Use https://www.cyberciti.biz/faq/linux-unix-creating-a-manpage/ as reference.
And, when running buttersnap -h, show this man page; when command man does not exists, use cat as fallback.
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Use https://www.cyberciti.biz/faq/linux-unix-creating-a-manpage/ as reference.
And, when running buttersnap -h, show this man page; when command man does not exists, use cat as fallback.