Commands using diff (118)

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list files recursively by size

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Extract HTTP Passwords in POST Requests

Make directory including intermediate directories
This will create the intermediate directories that do not exist. I did not know about this for a long time.

A bash timer
Starts and shows a timer. banner command is a part of the sysvbanner package. Instead of the banner an echo or figlet commands could be used. Stop the timer with Ctrl-C and elapsed time will be shown as the result.

peak amount of memory occupied by any process with "FOO" in its name
Show the maximum amount of memory that was needed by a process at any time. My use case: Having a long-running computation job on $BIG_COMPUTER and judging whether it will also run on $SMALL_COMPUTER.   http://man7.org/linux/man-pages/man5/proc.5.html VmHWM: Peak resident set size ("high water mark")

Fetch the current human population of Earth
Fetches the world population JSON data from the US census and parses it uses jshon

Extracts PDF pages as images

'micro' ps aux (by mem/cpu)
mac os x: ps aux | awk '{print($1" "$3" "$4" "$11);}' | grep -v "0,0" linux: ps aux | awk '{print($1" "$3" "$4" "$11);}' | grep -v "0.0"

quickly backup or copy a file with bash


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