All commands (14,184)
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Returns yesterday's date in the format yyyyMMdd
-2YEST=`perl -w -e '@yest=localtime(time-86400);printf "%d%.2d%.2d",$yest[5]+1900,$yest[4]+1,$yest[3];'` -
Assumes you have ffmpeg and oggenc. Similar to other scripts here, but this time outputting to Ogg Vorbis. I added the variable assignment for a nice output name. This is part of an interactive bash script I have with a few little multimedia tasks in it. http://www.dward.us/software/VSAK.sh
1INPUT=<input_video> && ffmpeg -i "$INPUT" -vn -f wav - | oggenc -o ${INPUT%%.*}.ogg - -
The uuencode utility will encode your file so that it can be sent as an attachment to an email. It is part of the sharutils package in RHEL/CentOS/Fedora.
5uuencode archive.tar.gz archive.tar.gz | mail -s "Emailing: archive.tar.gz" user@example.com -
Note, this works because smtp is running
2mailx bar@foo.com -s "HTML Hello" -a "Content-Type: text/html" < body.htm -
This converts all m4a files in a dir to flv. You can just swap the m4a bit to anything else ffmpeg supports though, and it'll work.
2for f in *.m4a; do ffmpeg -i "$f" "${f%.m4a}.flv"; done -
This is handy for making screenshots of all your videos for referring to in your flv player.
12for f in *.flv; do ffmpeg -y -i "$f" -f image2 -ss 10 -vframes 1 -an "${f%.flv}.jpg"; done -
PRIVATEKEY - Of course the full path to the private key \nHOST - The host where to get the backup \nSOURCE - The directory you wish to backup \nDESTINATION - The destination for the backup on your local machine1ssh -i $PRIVATEKEY $HOST -C 'cd $SOURCE; tar -cz --numeric-owner .' | tee $DESTINATION/backup.tgz | tar -tz -
Important to know: a valid date will return 0, otherwise 1!
2date -d2009-05-18 > /dev/null 2>&1 ; echo $? -
Continue with:
killall -CONT -m firefoxSuspends all Firefox Threads. Results in Zero CPU load. Useful when having 100+ Tabs open and you temporarily need the power elsewhere. Be careful - might produce RACE CONDITIONS or LOCKUPS in other processes or FF itself. matching is case sensitive.26killall -STOP -m firefox -
It prints myvideo.srt subtitle files in myvideo.avi, saving it in myvideo_subtitled.avi
6transcode -i myvideo.avi -x mplayer="-sub myvideo.srt" -o myvideo_subtitled.avi -y xvid -
0wget -H -r -nv --level=1 -k -p -erobots=off -np -N --exclude-domains=del.icio.us,doubleclick.net --exclude-directories=
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This will record the capture channel of your soundcard, directly encoded in Ogg Vorbis, in stereo at quality 5 (I'm using this to record live jam sessions from my line input). You can choose which device to capture (eg. line input, microphone or PCM output) with
alsamixer -V captureYou can do the same thing and live encode in MP3 or FLAC if you wish, just check FLAC and LAME man pages.5rec -c 2 -r 44100 -s -t wav - | oggenc -q 5 --raw --raw-chan=2 --raw-rate=44100 --raw-bits=16 - > MyLiveRecording.ogg -
Based on linkinpark342 suggestion. Sometimes you have to browse your way through a lot of sub-directories. This command cd to the previous sub-directory in alphabetical order. For example, if you have the directories "lectures/01-intro", "lectures/02-basic", "lectures/03-advanced" and so on, and your PWD is "02-basic", it jumps to "01-intro".
6cd ../"$(ls -F ..|grep '/'|grep -B1 `basename $PWD`|head -n 1)" -
Another version based on linkinpark342's contribution. Sometimes you have to browse your way through a lot of sub-directories. This command cd to the next sub-directory in alphabetical order. For example, if you have the directories "lectures/01-intro", "lectures/02-basic", "lectures/03-advanced" and so on, and your PWD is "02-basic", it jumps to "03-advanced".
3cd ../"$(ls -F ..|grep '/'|grep -A1 `basename $PWD`|tail -n 1)" -
This is meant for the bash shell. Put this function in your .profile and you'll be able to use tab-completion for sshing any host which is in your known_hosts file. This assumes that your known_hosts file is located at ~/.ssh/known_hosts. The "complete" command should go on a separate line as such: function autoCompleteHostname() { local hosts=($(awk '{print $1}' ~/.ssh/known_hosts | cut -d, -f1)); local cur=${COMP_WORDS[COMP_CWORD]}; COMPREPLY=($(compgen -W '${hosts[@]}' -- $cur )) } complete -F autoCompleteHostname ssh
6function autoCompleteHostname() { local hosts; local cur; hosts=($(awk '{print $1}' ~/.ssh/known_hosts | cut -d, -f1)); cur=${COMP_WORDS[COMP_CWORD]}; COMPREPLY=($(compgen -W '${hosts[@]}' -- $cur )) } complete -F autoCompleteHostname ssh -
This is useful for displaying a portion of a FILE that contains an error at line NUMBER
-1cat -n FILE | grep -C3 "^[[:blank:]]\{1,5\}NUMBER[[:blank:]]" -
create a copy of a video file without the audio tracs
2mencoder -ovc copy -nosound ./movie.mov -o ./movie_mute.mov -
Change ~/tmp to the destination directory, such as your mounted media. Change -n20 to whatever number of files to copy. It should quit when media is full. I use this to put my most recently downloaded podcasts onto my phone.
2find . -name \*.mp3 -printf "%C+ %h/%f\n" | sort -r | head -n20 | awk '{print "\""$2"\""}' | xargs -I {} cp {} ~/tmp -
Get the complete distro information from shell prompt like distributor ID,code name etc.
-7lsb_release -a -
Sometimes you have to browse your way through a lot of sub-directories. This command cd to the next sub-directory in alphabetical order. For example, if you have the directories "lectures/01-intro", "lectures/02-basic", "lectures/03-advanced" and so on, and your PWD is "02-basic", it jumps to "03-advanced".
4for d in `find .. -mindepth 1 -maxdepth 1 -type d | sort`; do if [[ `basename $d` > `basename $PWD` ]]; then cd $d; break; fi; done -
replace "/usr/src/linux/kernel/signal.c" with any file you want and listen to its output ! :P you can also replace "cat" with "echo" or anything you can come up with have fun :-}
1while true; do cat /usr/src/linux/kernel/signal.c > /dev/dsp; done -
0find . -name '*.m4a' | xargs -I audiofile mplayer -ao pcm "audiofile" -ao pcm:file="audiofile.wav"
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find largest file in /var
4find /var -mount -ls -xdev | /usr/bin/sort -nr +6 | more -
This command creates an unmirrored pool using files. While not recommended, a pool based on files can be useful for experimental purposes.
-2zpool create tank /path/to/file/a /path/to/file/b -
command creates a pool with two mirrors, where each mirror contains two disks.
-2zpool create tank mirror c0t0d0 c0t1d0 mirror c0t2d0 c0t3d0 - ‹ First < 493 494 495 496 497 > Last ›
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