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Convert Youtube videos to MP3
Make your own MP3s from Youtube videos.

Converts multiple youtube links to mp3 files
Usage: ytmp3 "YTurl" "YTurl2" "YTurl3" "YTurlN" Uses the shift command to let you extract the .mp3 from as many youtube urls as you like (or wherever else youtube-dl is supported) *Requires youtube-dl Orginal chunk of code: youtube-dl -q -t --extract-audio --audio-format mp3 URL taken from here http://www.commandlinefu.com/commands/view/9701/convert-youtube-videos-to-mp3

Query Wikipedia via console over DNS

Print permanent subtitles on a video (international edition :) )
If it's Hebrew [most probably all RTL languages. Comments?], add -flip-hebrew and -noflip-hebrew-commas to the mplayer switches: $ transcode -i myvideo.avi -x mplayer="-utf8 -flip-hebrew -noflip-hebrew-commas -sub myvideo.srt" -o myvideo_subtitled.avi -y xvid

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"

Get current Xorg resolution via xrandr
Not sure if it works the same on any shell.

Binary digits Matrix effect
Prints 0's and 1's in The Matrix style. You can easily modify to print 0-9 digits using $RANDOM %10 insted of %2.

Remove a line from a file using sed (useful for updating known SSH server keys when they change)
For example, to remove line 5 from foo, type: vi +5d +wq foo

check open ports without netstat or lsof

sed : using colons as separators instead of forward slashes
Having to escape forwardslashes when using sed can be a pain. However, it's possible to instead of using / as the separator to use : . I found this by trying to substitute $PWD into my pattern, like so $ sed "s/~.*/$PWD/" file.txt Of course, $PWD will expand to a character string that begins with a / , which will make sed spit out an error such as "sed: -e expression #1, char 8: unknown option to `s'". So simply changing it to $ sed "s:~.*:$PWD:" file.txt did the trick.


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