Commands by appslure (0)

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Prints a file leaving out all blank lines and comment-only lines
Does not print any line that either: - is empty - contains only spaces or tabs - starts with # - starts with spaces/tabs followed by a #

Generate a Change Log with git
Generate a changelog between the v1 and v2 tags

check open ports without netstat or lsof

See system users

list block devices
Shows all block devices in a tree with descruptions of what they are.

convert a,b,c to ('a','b','c') for use in SQL in-clauses

Belgian banking "structured communication"
Derived from current time down to minutes.

list block devices
Shows all block devices in a tree with descruptions of what they are.

Sort on multiple dis-contiguous keys/fields (can even specify key number/field from the end)
Notes: 1) -n-1 means sort key is the last field 2) -l is important if each separate record is on a new line (usually so for text files) 3) -j tells msort not to create log file (msort.log) in the working directory 4) may need to install msort package. 5) msort does lot more. Check man msort

Show drive names next to their full serial number (and disk info)
As of this writing, this requires a fairly recent version of util-linux, but is much simpler than the previous alternatives. Basically, lsblk gives a nice, human readable interface to all the blkid stuff. (Of course, I wouldn't recommend this if you're going to be parsing the output.) This command takes all the fun out of the previous nifty pipelines, but I felt I ought to at least mention it as an alternative since it is the most practical.

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