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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Go up multiple levels of directories quickly and easily.

Find processes utilizing high memory in human readable format
Finding high memory usage report in human readable format.

command line calculator
simple function , floating point number is supported.

open two files on top of each other in vim (one window, two panes)

Rename files in batch

get a rough estimate about how much disk space is used by all the currently installed debian packages
The vaule is expressed in megabytes

sort list of email addresses by domain.tld
email random list can be created here: https://www.randomlists.com/email-addresses

Print unique ipaddresses as they come in from Apache Access Log File
Prints the unique IP Addresses as they arrive from an Apache `access.log` file. The '-W interactive' tells awk to start writing to stdout immediately and not buffer the output. This command builds on the uniq lines without sorting command (http://www.commandlinefu.com/commands/view/4389/remove-duplicate-entries-in-a-file-without-sorting.)

Create a single PDF from multiple images with ImageMagick
Given some images (jpg or other supported formats) in input, you obtain a single PDF file with an image for every page.

Monitor a file with tail with timestamps added


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