All commands

All commands (14,187)

sorted by

This is sample output - yours may be different.

gnu@robby:~$ mencoder -idx out2.ogv -ovc lavc -oac mp3lame -audiofile /home/gnu/snowballz/data/music/snowballz2.mp3  -o snow.avi
MEncoder 2:1.0~rc2-0ubuntu19 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) D CPU 2.80GHz (Family: 15, Model: 4, Stepping: 7)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0  data: 0x0 - 0x76c7ec5
Ogg stream 0 is of an unknown type
[Ogg] stream 1: video (Theora v3.2.1), -vid 0
Ogg file format detected.
VIDEO:  [theo]  1024x768  24bpp  15.000 fps    0.0 kbps ( 0.0 kbyte/s)
Audio file file format detected.
[V] filefmt:65536  fourcc:0x6F656874  size:1024x768  fps:15.00  ftime:=0.0667
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
[theora @ 0x88423b0]Missing extradata!
Could not open codec.
VDecoder init failed :(
Opening video decoder: [theora] Theora/VP3
VDec: vo config request - 1024 x 768 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
videocodec: libavcodec (1024x768 fourcc=34504d46 [FMP4])
Selected video codec: [theora] vfm: theora (Theora (free, reworked VP3))
==========================================================================
MP3 audio selected.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Pos: 169.7s   2546f ( 0%) 12.61fps Trem:   0min   0mb  A-V:0.139 [815:231]
Skipping frame!
Pos: 170.4s   2557f ( 0%) 12.62fps Trem:   0min   0mb  A-V:0.135 [816:230]
Skipping frame!
Pos: 331.8s   4979f ( 0%) 13.60fps Trem: 603min 3609mb  A-V:0.102 [791:230]
Flushing video frames.
Writing index...
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

Video stream:  791.586 kbit/s  (98948 B/s)  size: 32831029 bytes  331.800 secs  4979 frames

Audio stream:  230.839 kbit/s  (28854 B/s)  size: 4917529 bytes  170.423 secs

mencoder -idx Your_Input_Video_File -ovc lavc -oac mp3lame -audiofile Your_Audio_track.mp3 -o Output_File.avi

eastwind · 2009-12-11 23:50:37 3

Duplicate several drives concurrently

If you have some drive imaging to do, you can boot into any liveCD and use a commodity machine. The drives will be written in parallel. To improve efficiency, specify a larger block size in dd: dd if=/dev/sda bs=64k | tee >(dd of=/dev/sdb bs=64k) | dd of=/dev/sdc bs=64k To image more drives , insert them as additional arguments to tee: dd if=/dev/sda | tee >(dd of=/dev/sdb) >(dd of=/dev/sdc) >(dd of=/dev/sdd) | dd of=/dev/sde
This is sample output - yours may be different.
23

dd if=/dev/sda | tee >(dd of=/dev/sdb) | dd of=/dev/sdc

nerd65536 · 2009-12-11 17:34:38 12
validate xml in a shell script.

For debian likes, that's in python-xml package.
This is sample output - yours may be different.
-1

xmlproc_parse.python-xml &>/dev/null <FILE> || exit 1

sputnick · 2009-12-11 17:30:03 5
validate xml in a shell script using xmllint
This is sample output - yours may be different.
1

xmllint --noout some.xml 2>&1 >/dev/null || exit 1

putnamhill · 2009-12-11 16:36:21 6
Print line numbers

Print out contents of file with line numbers. This version will print a number for every line, and separates the numbering from the line with a tab. Show Sample Output
This is sample output - yours may be different.
```
1     This is line 1.
2     This is line 2.
3
4     This is line 4.
```
-1

sed = <file> | sed 'N;s/\n/\t/'

jgc · 2009-12-11 14:39:14 3
List the size (in human readable form) of all sub folders from the current location

Parsing the output of ls is never a good idea for any reason. Using find this way: - works with files that have spaces in their names. - actually lists "sub folders" and not of all files and folders. - does not break if there are a huge number of files in the current directory.
This is sample output - yours may be different.
-6

find . -maxdepth 1 -type d -not -name . -exec du -sh {} +

sorpigal · 2009-12-11 14:37:26 4
Change your swappiness Ratio under linux

This command allow you to set the swappiness var at 50 (default is 60). The value interval must be set between 0 and 100. If swappiness is high=Swap usage is high, if swappiness is low=Ram usage is high.
This is sample output - yours may be different.
8

sysctl vm.swappiness=50

marousan · 2009-12-11 10:40:21 7
Find the ratio between ram usage and swap usage.

it provides the ratio used for the RAM and The SWAP under Linux. When swappiness is high, Swap usage is high. When swappiness is low, Ram usage is high. Show Sample Output
This is sample output - yours may be different.
```
vm.swappiness = 60
```
3

sysctl -a | grep vm.swappiness

marousan · 2009-12-11 10:33:35 4
List all TCP opened ports on localhost in LISTEN mode

Alternative of OJM snippet : This one show the IP too, where ports bind. It's very important, because if there's only 127.0.0.1 instead of 0.0.0.0, connections from internet are rejected.
This is sample output - yours may be different.
3

netstat -nptl

sputnick · 2009-12-11 10:23:43 4
Analyse compressed Apache access logs for the most commonly requested pages
This is sample output - yours may be different.
4

zcat access_log.*.gz | awk '{print $7}' | sort | uniq -c | sort -n | tail -n 20

tkb · 2009-12-11 09:36:30 4
list all opened ports on host
This is sample output - yours may be different.
3

sudo lsof -P -i -n -sTCP:LISTEN

OJM · 2009-12-11 07:16:54 3
Send a local file via email

Another way of sending an attachment. -s : subject file : file to be sent
This is sample output - yours may be different.
4

mpack -s "Backup: $file" "$file" email@id.com

sentinel · 2009-12-11 04:03:06 3
See non printable caracters like tabulations, CRLF, LF line terminators ( colored )

For fancier and cleaner output, try the following snippet : showendlines(){ while read i; do od --address-radix=n --width=$(wc -c <<< "$i") -c <<< "$i" | perl -pe 's/.\K\s{2,3}//g'; done < $1 | grep --color '\\.'; } Now you can run that with : showendlines <FILE> Thanks to prince_jammys to "debug" my English ;)
This is sample output - yours may be different.
7

od -c <FILE> | grep --color '\\.'

sputnick · 2009-12-11 02:15:48 9
Send a local file via email

Send it the easy way, with MIME and everything handled for you by an app that knows best.
This is sample output - yours may be different.
4

mutt your@email_address.com -s "Message Subject Here" -a attachment.jpg </dev/null

linuxrawkstar · 2009-12-10 22:49:38 5
list all opened ports on host
This is sample output - yours may be different.
4

nmap -p 1-65535 --open localhost

solarislackware · 2009-12-10 20:03:37 3
Send a local file via email

on this way we can define the body too
This is sample output - yours may be different.
0

{ echo -e "$body"; uuencode "$outfile" "$outfile"; } | mail -s "$subject" "$destaddr" ;

glaudiston · 2009-12-10 18:08:59 4
prints line numbers

There's too many options to number, My curiosity has forced me to make it using only sed. Maybe useful... or not... :-S
This is sample output - yours may be different.
-1

sed '/./=' infile | sed '/^/N; s/\n/ /'

glaudiston · 2009-12-10 16:24:56 6
List the size (in human readable form) of all sub folders from the current location
This is sample output - yours may be different.
7

du -sh */

guxtavo · 2009-12-10 16:19:15 6
List the size (in human readable form) of all sub folders from the current location
This is sample output - yours may be different.
-4

ls | xargs du -sh

jyro · 2009-12-10 15:58:05 3
extract plain text from MS Word docx files

Tested on MacOS X
This is sample output - yours may be different.
5

unzip -p some.docx word/document.xml | sed -e 's/<[^>]\{1,\}>//g; s/[^[:print:]]\{1,\}//g'

putnamhill · 2009-12-10 15:13:33 12
Find jpeg images and copy them to a central location

Use if you have pictures all over the place and you want to copy them to a central location Synopsis: Find jpg files translate all file names to lowercase backup existing, don't overwrite, preserve mode ownership and timestamps copy to a central location
This is sample output - yours may be different.
4

find . -iname "*.jpg" -print0 | tr '[A-Z]' '[a-z]' | xargs -0 cp --backup=numbered -dp -u --target-directory {location} &

oracular · 2009-12-10 08:47:04 5
show your locale language keyboard setting

Show Sample Output
This is sample output - yours may be different.
```
gnu@robby:~$ locale | grep LANG=
LANG=fr_BE.UTF-8
```
-1

locale | grep LANG=

eastwind · 2009-12-10 07:24:01 5
Format a flooppy with windows compatible disk

The 1440 is the number of bytes, and the A: specifies the floppy drive.
This is sample output - yours may be different.
-1

mformat -f 1440 A:

eastwind · 2009-12-10 06:51:20 3
mount a msdos formated floppy disk

-t option tells the system to look for a msdos filesystem The /dev/fd0 is your floppy drive ( This may be different for you check /dev folder to confirm) /mnt/floppy is the point where you want to mount the device to
This is sample output - yours may be different.
-2

mount -t msdos /dev/fd0 /mnt/floppy

eastwind · 2009-12-10 06:46:53 7
convert wmv into xvid avi format
This is sample output - yours may be different.
1

mencoder -ovc xvid -oac mp3lame -srate 44100 -af lavcresample=44100 -xvidencopts fixed_quant=4 Foo.wmv -o Bar.avi

eastwind · 2009-12-10 06:46:11 3
‹ First < 418 419 420 421 422 > Last ›

What's this?

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.

Share Your Commands

Check These Out

Batch convert PNG to JPEG

Convert all PNG images in directory to JPEG using ImageMagick, and delete the old PNG images.

Create the signature base string required for a Twitter stream feed

This is the SECOND command in a set for five that are needed for a Twitter stream feed. This command creates variable "b", the so-called "base string" required for oauth in Twitter stream feed requests. (The 256 char limit prevents giving it a better name) We use five environment variables created by a previous step: id, k1, once, ts and k3. The five environment variables are created in a separate command, please see my other commands. For more information on the signature base string, see dev.twitter.com/apps, click on any app (or create a new one) and then go to the "OAuth Tool" tab.

Install pip with Proxy

Installs pip packages defining a proxy

Undo commit in Mercurial

Find out when your billion-second anniversary is (was).

Replace 12/31/1970 with your birth date.

check open ports without netstat or lsof

Get the Volume labels all bitlocker volumes had before being encrypted

Get information of volume labels of bitlocker volumes, even if they are encrypted and locked (no access to filesystem, no password provided). Note that the volume labels can have spaces, but only if you name then before encryption. Renaming a bitlocker partition after being encrypted does not have the same effect as doing it before.

List all duplicate directories

Very quick! Based only on the content sizes and the character counts of filenames. If both numbers are equal then two (or more) directories seem to be most likely identical. if in doubt apply: $ diff -rq path_to_dir1 path_to_dir2 AWK function taken from here: http://stackoverflow.com/questions/2912224/find-duplicates-lines-based-on-some-delimited-fileds-on-line

print all characters of a file using hexdump

'od -c' works like 'hexdump -c' but is available on other operating systems that don't ship with hexdump (e.g. solaris).

convert several jpg into one pdf file

require ImageMagick and GhostScript paquet

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)

All commands (14,187) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

All commands (14,187)

sorted by