Commands by sammcj (6)

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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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burn an ISO image to writable CD
Does life get much easier? Read up about wodim for an understanding of its origins in relation to the older `cdrecord` utility

Convert IP octets to HEX with no dots.
Converts IP octets to hex using printf command. Useful for generating pxeboot aliases in the pxelinux.cfg folder.

Show sorted list of files with sizes more than 1MB in the current dir
Taken from here: http://linsovet.com/directory-usage-size-sorted-list

list all file extensions in a directory
A shorter version

show the difference

Open Port Check
also could specify port number: lsof -ni TCP:80

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

sort a JSON blob
For situations where you keep JSON in a VCS and you want your diffs to be sane, such as within a Chef configuration repo.

Tracklist reaplace backspace to '-'
Requires perl 5.14 or greater

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


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