Commands by dattaway (1)

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Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)
If your `date` command has `-r` option, you don't need `stat`

Short one line while loop that outputs parameterized content from one file to another
There is a common command for outputting a field or list of fields from each line in a file. Why wouldn't you just use cut?

create an uncompressed tar file of each child directory of the current working directory
First, use find to find directories exactly one level below current directory, then create a tar file using the directory as the basename.

Cleanup Docker
# Delete all containers docker rm $(docker ps -a -q) # Delete all images docker rmi $(docker images -q)

bulk rename files with sed, one-liner
Far from my favorite, but works in sh and with an old sed that doesn't support '-E'

Mount FileVault sparsebundle image manually (e.g.: from TimeMachine disk).

Get the size of all the directories in current directory (Sorted Human Readable)
as per eightmillion's comment. Simply economical :)

quickly backup or copy a file with bash
This inserts timestamp instead of .bak extension.

Random quote from Borat
I improved a bit on the original by only using sed and extracting the quote with a matching group. Use -nE for sed on Mac OSX Use -nr for sed on Linux. Warning! The quotes from Borat are definitely offensive.

split large video file
i have a large video file, 500+ MB, so i cant upload it to flickr, so to reduce the size i split it into 2 files. the command shows the splitting for the first file, from 0-4 minutes. ss is start time and t is duration (how long you want the output file to be). credit goes to philc: http://ubuntuforums.org/showthread.php?t=480343 NOTE: when i made the second half of the video, i got a *lot* of lines like this: frame= 0 fps= 0 q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbit just be patient, it is working =)

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