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Validate openssh key & print checksum

grep -v with multiple patterns.
If you wanted to do all in one command, you could go w/ sed instead

Copy a directory recursively without data/files

Show a prettified list of nearby wireless APs

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Look for IPv4 address in files.
It finds a SNMP OID too :-(

remove *.jpg smaller than 500x500

paste one file at a time instead of in parallel
paste one file at a time instead of in parallel

random xkcd comic
i sorta stole this from http://www.shell-fu.org/lister.php?id=878#MTC_form but it didn't work, so here it is, fixed. --- updated to work with jpegs, and to use a fancy positive look behind assertion.


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