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Convert a .ogv recording (eg from recordmydesktop in Gnome/Linux) into a .wmv (eg for playback in Windows)

I needed to convert a screen capture when using Gnome's "recordmydesktop" and convert it to a .wmv for playback in Windows.
This is sample output - yours may be different.
0

ffmpeg -i input.ogv -qscale 0 output.wmv # convert .ogv to .wmv

mpb · 2014-06-24 16:23:18 7
Spoof your wget referring url
This is sample output - yours may be different.
0

H="--header"; wget $H="Accept-Language: en-us,en;q=0.5" $H="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" $H="Connection: keep-alive" -U "Mozilla/5.0 (Windows NT 5.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2" --referer=urlhere

theabarnes · 2014-10-17 04:22:07 8
Convert JSON to YAML (unicode safe)
This is sample output - yours may be different.
0

json_xs -t yaml < foo.json > foo.yaml

chrapek · 2015-01-29 13:48:34 9
Create OS X install USB via one step CLI

If you've upgraded to OS X 10.10.x the OS installer should be on your system, otherwise its a free download (~ 5 GB). Added bonus, the above command does not require the USB pre-formatted. Show Sample Output
This is sample output - yours may be different.
```
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.
```
0

sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Yosemite.app/ --nointeraction

justinf · 2015-05-24 08:03:41 12
Write random data to a disk, quickly

Due to @tremby, here: http://unix.stackexchange.com/a/172088/58343. I'm looking for a way to parallelize openssl and feed that to dd since openssl is the bottleneck on my machine: http://unix.stackexchange.com/questions/253466/parallelize-openssl-as-input-to-dd
This is sample output - yours may be different.
0

openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt </dev/zero | pv --progress --eta --rate --bytes --size 8000632782848 | dd of=/dev/md0 bs=2M

diagon · 2016-01-05 19:36:03 20
Delete all Vagrant boxes

Combs through your home directory and destroys all Vagrant boxes.
This is sample output - yours may be different.
0

find $HOME -type d -name .vagrant | xargs -i% bash -c "pushd %; cd ..;vagrant destroy -f; popd"

gtirloni · 2016-10-06 17:02:20 17
Find latest modified log
This is sample output - yours may be different.
0

find . -name '*.log' | xargs ls -hlt > /tmp/logs.txt && vi /tmp/logs.txt

zluyuer · 2017-07-07 05:13:51 20
Toggle the Touchpad on or off
This is sample output - yours may be different.
0

tp=$(synclient -l | grep TouchpadOff | awk '{ print $3 }') && tp=$((tp==0)) && synclient TouchpadOff=$tp

jny · 2018-10-09 07:42:32 375
replace @ symbol with new line character, to get new line character press Ctrl+v+enter --> ^M

replace @ symbol with new line character, to get new line character press Ctrl+v+enter --> ^M
This is sample output - yours may be different.
0

%s/@/^v[M]/g

xraj · 2009-09-17 11:47:24 4
Show a script or config file without comments
This is sample output - yours may be different.
0

egrep -v "^[[:blank:]]*($|#|//|/\*| \*|\*/)" somefile

sdadh01 · 2009-11-10 18:49:19 5
View a random xkcd comic

Only need to install Image Magick package. Display a xkcd comic with its title and save it in /tmp directory If you prefer to view the newest xkcd, use this command: wget -q http://xkcd.com/ -O-| sed -n '/<img src="http:\/\/imgs.xkcd.com\/comics/{s/.*$http:.*$" t.*/\1/;p}' | awk '{system ("wget -q " $1 " -O- | display -title $(basename " $1") -write /tmp/$(basename " $1")");}'
This is sample output - yours may be different.
0

wget -q http://dynamic.xkcd.com/comic/random/ -O-| sed -n '/<img src="http:\/\/imgs.xkcd.com\/comics/{s/.*$http:.*$" t.*/\1/;p}' | awk '{system ("wget -q " $1 " -O- | display -title $(basename " $1") -write /tmp/$(basename " $1")");}'

laugg · 2009-12-09 13:41:25 7
Show the command line of a process that use a specific port (ubuntu)

A way not so simple but functional for print the command for the process that's listening a specific port. I got the pid from lsof because I think it's more portable but can be used netstat netstat -tlnp Show Sample Output
This is sample output - yours may be different.
```
java -Dcom.sun.management.jmxremote -Xmx1024m -XX:MaxPermSize=300m -server -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8885 -jar /oc4j/j2ee/home/oc4j.jar 
```
0

port=8888;pid=$(lsof -Pan -i tcp -i udp | grep ":$port"|tr -s " " | cut -d" " -f2); ps -Afe|grep "$pid"|grep --invert-match grep | sed "s/^$[^ ]*[ ]*$\{7\}$.*$$/\2/g"

glaudiston · 2010-01-11 17:49:22 8
Status of Snow Armageddon in Washington DC Metro from the command line...

The Washington DC Metro area is not accustomed to getting large snow storms... http://snowpocalypsedc.com/
This is sample output - yours may be different.
0

/usr/bin/links --source http://weather.noaa.gov/pub/data/forecasts/zone/md/mdz009.txt

SuperFly · 2010-02-05 17:44:45 3
List a phone's filesystem with bitpim

This will list your phone's filesystem with bitpim. (works on many LG, Samsung, and Sanyo) See http://www.bitpim.org/help/phones-featuressupported.htm for full list.
This is sample output - yours may be different.
0

bitpim -p $PHONE_PORT ls

matthewbauer · 2010-04-09 02:20:53 10
shutdown pc in a 4 hours

((60 * 4)) will be turned into 240 by bash before being input to the shutdown command, replace the 4 with whatever number of hours you want, let bash do the math.
This is sample output - yours may be different.
0

shutdown -h $((60 * 4))

retrodanny · 2011-05-02 07:10:10 3
batch download jpgs which are in sequence
This is sample output - yours may be different.
0

curl -O http://www.site.com/img/image[001-175].jpg

kev · 2011-11-09 10:19:24 4
Show all archives.

That command make the same that "ls -a", but just typping "la". Tested in bash.
This is sample output - yours may be different.
0

la

rock_neurotiko · 2011-12-18 15:48:03 3
open a screenshot of a remote desktop via ssh

More stealthy ffmpeg method. The imagemagick 'import' method causes a system beep.
This is sample output - yours may be different.
0

ssh user@host "ffmpeg -f x11grab -s 1920x1080 -i :0 -r 1 -t 1 -f mjpeg -" | display

buhrietoe · 2012-05-01 04:45:15 3
Flush DNS in Mac OS X
This is sample output - yours may be different.
0

dscacheutil ?flushcache

edshadi · 2012-07-04 17:04:52 3
SoftHangup --Request a hangup on a given channel - in Asterisk 1.6.2:

If a call get hanged , one can disconnect the call using the above command i.e "soft hangup . The Zap/1-1 is the name of the Channel , you wish to disconnect. There may be many channels, but you need to pick the channel name of hanged call only ...
This is sample output - yours may be different.
0

soft hangup Zap/1-1

coolsanjiv · 2012-10-31 06:50:18 3
Suspend to RAM with KDE 4

%qdbus org.freedesktop.PowerManagement /org/kde/Solid/PowerManagement suspendToRam Service 'org.freedesktop.PowerManagement' does not exist.
This is sample output - yours may be different.
0

dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Suspend

unixmonkey45062 · 2013-01-03 21:35:19 6
launch bash without using any letters

Starts a new shell (in bash/sh, it starts bash/sh). 'man bash' explains: "If arguments remain after option processing, and neither the -c nor the -s option has been supplied, the first argument is assumed to be the name of a file containing shell commands. If bash is invoked in this fashion, $0 is set to the name of the file, and the positional parameters are set to the remaining arguments."
This is sample output - yours may be different.
0

$0

fhtagn · 2013-03-05 22:57:14 4
Display terminal command history with date

If the HISTTIMEFORMAT is set, the time stamp information associated with each history entry is written to the history file, marked with the history comment character. Show Sample Output
This is sample output - yours may be different.
```
    2  19/09/13 11:21:02 ./adb kill-server
    3  19/09/13 11:21:02 ./adb start-server
    4  19/09/13 11:21:02 ./adb 
    5  19/09/13 11:21:02 ./adb shell
    6  19/09/13 11:21:02 ./adb shell
    7  19/09/13 11:21:02 cd /Users/weng/Software/android-sdk-macosx/platform-tools/
    8  19/09/13 11:21:02 ./adb kill-server
    9  19/09/13 11:21:02 ./adb start-server
   10  19/09/13 11:21:02 ping 192.168.1.10
```
0

echo 'export HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.bash_profile

99RedBalloons · 2013-09-19 03:25:14 13
truncate deleted files from lsof

Be careful, first run: lsof | grep -i deleted | grep REG | grep -v txt Then, give it the boot!
This is sample output - yours may be different.
0

lsof | grep -i deleted | grep REG | grep -v txt | ruby -r 'pp' -e 'STDIN.each do |v| a = v.split(/ +/); puts `:> /proc/#{a[1]}/fd/#{a[3].chop}`; end'

jim80net · 2014-03-11 06:02:09 7
Show an alphabetized list of all mcollective nodes
This is sample output - yours may be different.
0

mco ping | head -n -4 | awk '{print $1}' | sort

mrwulf · 2014-06-24 18:20:16 7
‹ First < 418 419 420 421 422 > Last ›

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Search some text from all files inside a directory

Intercept, monitor and manipulate a TCP connection.

This will handle multiple incoming connections. Also, found sed works best with -u flag (unbuffered io). Easiest way I've found to get ncat is to install nmap.

Find status of all symlinks

The symlinks command can show status of all symbolic links, including which links are dangling, which symlinks point to files on other file systems, which symlinks use ../ more than necessary, which symlinks are messy (e.g. having too many slashes or dots), etc. Other useful things it can do include removing all dangling links (-d) and converting absolute links to relative links (-c). The path given must be an absolute path (which is why I used $(pwd) in the example command).

Recover a deleted file

grep searches through a file and prints out all the lines that match some pattern. Here, the pattern is some string that is known to be in the deleted file. The more specific this string can be, the better. The file being searched by grep (/dev/sda1) is the partition of the hard drive the deleted file used to reside in. The ?-a? flag tells grep to treat the hard drive partition, which is actually a binary file, as text. Since recovering the entire file would be nice instead of just the lines that are already known, context control is used. The flags ?-B 25 -A 100? tell grep to print out 25 lines before a match and 100 lines after a match. Be conservative with estimates on these numbers to ensure the entire file is included (when in doubt, guess bigger numbers). Excess data is easy to trim out of results, but if you find yourself with a truncated or incomplete file, you need to do this all over again. Finally, the ?> results.txt? instructs the computer to store the output of grep in a file called results.txt. Source: http://spin.atomicobject.com/2010/08/18/undelete?utm_source=y-combinator&utm_medium=social-media&utm_campaign=technical

Go to parent directory of filename edited in last command

Update zone file Serial numbers

Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc. Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this. Make sure your server's date is correct, otherwise insert your own serial number. $rndc reload should usually follow this command.

yum -q list updates | tail -n+2

Rename files in batch

List the size (in human readable form) of all sub folders from the current location

Batch edition of all OpenOffice.org Writer files in the current directory (body text)

This function does a batch edition of all OOO3 Writer files in current directory. It uses sed to search a FOO pattern into body text of each file, then replace it to foo pattern (only the first match) . I did it because I've some hundreds of OOO3 Writer files where I did need to edit one word in each ones and open up each file in OOO3 gui wasn't an option. Usage: bsro3 FOO foo

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