Commands using aplay sorted by votes

Commands using aplay (8)

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output your microphone to a remote computer's speaker
This is sample output - yours may be different.
32

arecord -f dat | ssh -C user@host aplay -f dat

drinkcat · 2010-02-18 06:00:33 42
guitar synthesizer in one line of C

outputs a f=220Hz guitar string sound (fifth string A) needs ALSA
This is sample output - yours may be different.
7

f=220;echo "int s=16e3/$f;main(i){unsigned char v[s];read(0,v,s);for(;;)putchar(v[i%s]=(v[i%s]+v[++i%s])/2);}"|gcc -x c -&&./a.out</dev/urandom|aplay -d 2

tehdog · 2013-06-28 14:52:53 10
Pronounce an English word using Merriam-Webster.com

The original was a little bit too complicated for me. This one does not use any variables.
This is sample output - yours may be different.
5

pronounce(){ wget -qO- $(wget -qO- "http://www.m-w.com/dictionary/$@" | grep 'return au' | sed -r "s|.*return au$'([^']*)', '([^'])[^']*'$.*|http://cougar.eb.com/soundc11/\2/\1|") | aplay -q; }

matthewbauer · 2010-03-12 17:44:16 7
aplay some whitenoise

Plays whitenoise from /dev/urandom. Show Sample Output
This is sample output - yours may be different.
```
Playing raw data '/dev/urandom' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
```
5

aplay -c 2 -f S16_LE -r 44100 /dev/urandom

rk · 2015-05-24 20:51:11 12
eavesdrop

Record off the microphone on a remote computer and listen to it live through your speakers locally. Show Sample Output
This is sample output - yours may be different.
```
Recording WAVE '-' : Unsigned 8 bit, Rate 8000 Hz, Mono
Playing WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono
```
4

ssh USER@REMOTESYSTEM arecord - | aplay -

mu_mind · 2011-01-31 16:49:45 136
Output sound when your computer is downloading something

Outputs pseudo-random sounds to speakers (stereo mode because of -c 2) when there are any kind of network activity. Show Sample Output
This is sample output - yours may be different.
```
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes
Playing raw data 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Stereo
```
3

tcpdump | aplay -c 2

sxiii · 2011-08-27 15:03:02 6
Make sure a script is run in a terminal.

If your script needs to be run in a terminal, this line at the top will stop it running if you absent-mindedly double-click the icon, perhaps intending to edit it. (Of course this won't help with scripts that run in the background.)
This is sample output - yours may be different.
0

tty > /dev/null 2>&1 || { aplay error.wav ; exit 1 ;}

johnraff · 2009-11-04 16:18:00 6
Pronounce an English word using Merriam-Webster.com

Updated to the new version of the MW webpage (seems MW does not use cougar anymore, so the other commands do not work nowadays), and using Xidel to parse the page with a html parser instead regex. Example usage: pronounce onomatopoetic I'm not sure how well Xidel works with binary streams (although it seems to work great in tests), so using wget to download the actual wav file might be safer, i.e.: pronounce(){ wget -qO- $(xidel "http://www.m-w.com/dictionary/$*" -f "replace(css('.au')[1]/@onclick,\".*'([^']+)', *'([^']+)'.*\", '/audio.php?file=\$1&word=\$2')" -e 'css("embed")[1]/@src') | aplay -q;} Xidel is not a standard cli tool and has to be downloaded from xidel.sourceforge.net
This is sample output - yours may be different.
0

pronounce(){ xidel "http://www.m-w.com/dictionary/$*" -f "replace(css('.au')[1]/@onclick,\".*'([^']+)', *'([^']+)'.*\", '/audio.php?file=\$1&word=\$2')" -f 'css("embed")[1]/@src' --download - | aplay -q;}

BeniBela · 2013-04-18 13:03:16 5

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Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Pull up remote desktop for other than gnome/kde eg fluxbox

If the remote doesn't export its desktop (eg fluxbox, blackbox etc) then you need to run a x11vnc server there and a vncviewer at the local end. This command does the lot for you - it assumes that you can 'ssh' to the box without a password and that x11vnc is installed at the remote end.

List only directories, one per line

omit the 1 (one) if you don't need one-per-line

Get the IP address

Edit a file on a remote host using vim

Reduce PDF size

ThePirateBay.org torrent search

usage: tpb searchterm example: tpb the matrix trilogy This searches for torrents from thepiratebay and displays the top results in reverse order, so the 1st result is at the bottom instead of the top -- which is better for command line users

Commandline document conversion with Libreoffice

In this example, the docx gets converted to Open Document .odt format. For other formats, you'll need to specify the correct filter (Hint: see "Comments" link below for a nice list).

Remove everything except that file

Remove everything except that file with shell tricks inside a subshell to avoid changes in the environment. $ help shopt

Download certificate chain from FTP

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Commands using aplay (8)

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