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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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finds the c files with lines containing 'mcs', in the folders under the current folder

Replace multiple spaces with semicolon

Job Control
background and disown, but with a proper one-line syntax

Sum file sizes

Vim: Switch from Horizontal split to Vertical split
This allows to switch from horizontal to vertical split, putting the current buffer on the right side of the vertical split. To put it on the right use ^W-H. In a similar way, to switch from Vertical to Horizontal, do ^W-J (for bottom) and ^W-K (for top), but you vimers all guessed that one already :P

Display PHP files that directly instantiate a given class
This greps all PHP files for a given classname and displays both the file and the usage.

Show apps that use internet connection at the moment. (Multi-Language)

Embed next line on the end of current line using sed
N: On the current line, sed will display it on pattern space, plus a \n (new line); but s/\n//: Will get rid of new line displayed on pattern space, joining the current line's end with the start of the next line Useful in scripts.

Suspend to ram

check open ports (both ipv4 and ipv6)


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