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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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get a directory from one machine to another using tar and ssh

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Find files containing string and open in vim
I often use "vim -p" to open in tabs rather than buffers.

extracting audio and video from a movie
rips the audio and video stream of a movie. The two streams are stored separately.

Alternative for basename using grep to extract file name
Here's a bash version.

get all Amazon cloud (amazonws etc) ipv4 subnets

Create and replay macros in vim
You can record, then replay a series of keystrokes in vim. In command mode 'q', then a letter [a-zA-Z] starts macro recording mode. Enter a series of vim commands. When done, enter command mode again, and press 'q' to stop recording. To replay, enter command mode, then press @{letter}

Open screen on the previous command
I often find myself wanting to open screen on whatever command I'm currently running. Unfortunately, opening a fresh screen session spawns a new bash session, which doesn't keep my history, so calling screen directly with the previous command is the only way to go.

Gets the english pronunciation of a phrase
Usage: say hello world how are you today

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