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Individually compress each file in a directory

Should do exactly the same - compress every file in the current directory. You can even use it recursively: gzip -r .
This is sample output - yours may be different.
-3

gzip *

funky · 2010-03-29 10:58:40 3
List all execs in $PATH, usefull for grepping the resulting list

While it seems (to me at least) a little counter-intuitive to filter on name first, this requires less work for find, as it allows it to immediately discount any files that do not match the name directly from the directory listing on disk. Querying against file attributes requires reading the file attributes, which is performed for all files matching any name based predicates. Show Sample Output
This is sample output - yours may be different.
```
/usr/bin/time-admin
/usr/bin/shares-admin
/usr/bin/mysqladmin
/usr/bin/users-admin
```
1

find ${PATH//:/ } -iname "*admin*" -executable -type f

sanmiguel · 2010-03-29 10:20:07 3
Individually compress each file in a directory

Compresses each file individually, creating a $fileneame.tar.gz and removes the uncompressed version, usefull if you have lots of files and don't want 1 huge archive containing them all. you could replace ls with ls *.pdf to just perform the action on pdfs for example.
This is sample output - yours may be different.
-2

ls | while read filename; do tar -czvf "$filename".tar.gz "$filename"; rm "$filename"; done

Thingymebob · 2010-03-29 08:10:38 8
Limit bandwidth usage by any program

Trickle is a voluntary, cooperative bandwidth shaper. it works entirely in userland and is very easy to use. The most simple application is to limit the bandwidth usage of programs.
This is sample output - yours may be different.
7

trickle -d 60 wget http://very.big/file

point_to_null · 2010-03-29 06:55:30 5
Spelling Suggestion

Spelling Suggestion using Yahoo! API Show Sample Output
This is sample output - yours may be different.
```
mozambique
```
0

curl -s "http://search.yahooapis.com/WebSearchService/V1/spellingSuggestion?appid=YahooDemo&query=mozmbque"|sed -n -e 's/.*<Result>$.*$<\/Result>.*/\1/p'

andremta · 2010-03-29 00:39:49 8
Buscar archivos con la extension mp3 y mostrar el conteo de resultados
This is sample output - yours may be different.
-2

find -D rates . -name "*.mp3" -type f

Khreez · 2010-03-28 23:19:53 3

Display RSTP (802.1W) Info. on on Foundry (Brocade) RX and MLX BigIron L3 (routers & switches)

Use this command to view information regarding RSTP (802.1W). Show Sample Output

-4

show 802-1w

rootgeek · 2010-03-28 17:54:03 3

Download all PDFs from an authenificated website

Replace *** with the appropiate values
This is sample output - yours may be different.
1

wget -r -np -nd -A.pdf --user *** --password *** http://www.domain.tld/courses/***/download/

saerdnaer · 2010-03-28 09:26:49 4

Print Asterisk phone logs

Prints a log of phonecalls placed from/to an asterisk server, formated into an easily readable table. You can use partial number/queue matches, or use .* to match everything. Show Sample Output

phonelogs() { grep "$1" /var/log/asterisk/cdr-csv/Master.csv | cut -d',' -f 2,3,11,12 --output-delimiter=" " | sed 's/"//g' | cut -d' ' -f 1,2,3,4,6 | column -t; }

SuperJediWombat · 2010-03-28 08:30:46 17

show your private/local ip address

Gets the IP addresses of all interfaces except loopback. Cuts out all of the extra text. Shorter than the other options, and much easier to type. 'ifconfig | grep cast' is enough to get the IP address, but it doesn't strip the rest of the junk out. Show Sample Output
This is sample output - yours may be different.
```
10.10.10.2
10.10.20.250
```
0

ifconfig | grep cast | cut -d':' -f2 | cut -d' ' -f1

SuperJediWombat · 2010-03-28 02:15:34 4
Show thermal info

A quick way of know the temperature info. Show Sample Output
This is sample output - yours may be different.
```
temperature:             72 C
temperature:             71 C
temperature:             62 C
temperature:             38 C
temperature:             80 C
```
0

cat /proc/acpi/thermal_zone/*/temperature

starchox · 2010-03-28 01:30:14 5
Capture video of a linux desktop
This is sample output - yours may be different.
6

ffmpeg -f x11grab -s `xdpyinfo | grep 'dimensions:'|awk '{print $2}'` -r 25 -i :0.0 -sameq /tmp/out.mpg > /root/howto/capture_screen_video_ffmpeg

brubaker · 2010-03-27 21:31:34 5
Query Wikipedia via console over DNS

Shorter version, works with multiple words. Show Sample Output
This is sample output - yours may be different.
```
$ mwiki Richard Stallman
"Richard Matthew Stallman (born March 16, 1953), often abbreviated \"rms\", is an American software freedom activist, hacker, and software developer. http://en.wikipedia.org/wiki/Richard_Stallman"
```
9

mwiki() { dig +short txt "$*".wp.dg.cx; }

dorin · 2010-03-27 17:54:36 9
SED - Substitute string in next line

source: http://sed.sourceforge.net/sed1line.txt
This is sample output - yours may be different.
1

sed -i.backup '/patter/{n;s/foo/bar/g}' file

voyeg3r · 2010-03-27 12:19:11 3
Updated top ten memory utilizing processes (child/instance aggregation) now with percentages of total RAM

Prints the top 10 memory consuming processes (with children and instances aggregated) sorted by total RSS and calculates the percentage of total RAM each uses. Please note that since RSS can include shared libraries it is possible for the percentages to add up to more that the total amount of RAM, but this still gives you a pretty good idea. Also note that this does not work with the mawk version of awk, but it works fine with GNU Awk which is on most Linux systems. It also does not work on OS X. Show Sample Output
This is sample output - yours may be different.
```
2584    cupsd                   0.25%
3096    tlsmgr                  0.30%
3624    getty                   0.35%
3948    nm-system-setti         0.38%
3968    gdm                     0.38%
4668    hald                    0.45%
6404    sshd                    0.61%
14716   apache2                 1.40%
22104   mysqld                  2.11%
33400   console-kit-dae         3.18%
```
3

TR=`free|grep Mem:|awk '{print $2}'`;ps axo rss,comm,pid|awk -v tr=$TR '{proc_list[$2]+=$1;} END {for (proc in proc_list) {proc_pct=(proc_list[proc]/tr)*100; printf("%d\t%-16s\t%0.2f%\n",proc_list[proc],proc,proc_pct);}}'|sort -n |tail -n 10

d34dh0r53 · 2010-03-27 01:34:50 7
set desktop background to highest-rated image from Reddit /r/wallpapers

You'll need "feh" to set the background from the commandline. Install with "apt-get install feh" Thanks to the Redditors on this thread: http://www.reddit.com/r/linux/comments/bira4/is_there_a_linux_version_of_this_preferably_a/
This is sample output - yours may be different.
4

curl http://www.reddit.com/r/wallpapers.rss | grep -Eo 'http:[^&]+jpg' | head -1 | xargs feh --bg-seamless

shavenwarthog · 2010-03-27 00:08:40 5
Google URL shortener

use curl and sed to shorten an url via goo.gl
This is sample output - yours may be different.
3

curl -s 'http://ggl-shortener.appspot.com/?url='"$1" | sed -e 's/{"short_url":"//' -e 's/"}/\n/g'

mvrilo · 2010-03-26 22:31:06 22
Set the hardware date and time based on the system date
This is sample output - yours may be different.
1

hwclock --systohc -utc

0disse0 · 2010-03-26 18:04:12 5
Colorize svn stat

Use color escape sequences and sed to colorize the output of svn stat -u. Colors: http://www.faqs.org/docs/abs/HTML/colorizing.html svn stat characters: http://svnbook.red-bean.com/en/1.4/svn-book.html#svn.ref.svn.c.status GNU Extensions for Escapes in Regular Expressions: http://www.gnu.org/software/sed/manual/html_node/Escapes.html
This is sample output - yours may be different.
1

svn stat -u | sort | sed -e "s/^M.*/\o033[31m&\o033[0m/" -e "s/^A.*/\o033[34m&\o033[0m/" -e "s/^D.*/\o033[35m&\o033[0m/"

friedchuckles · 2010-03-26 15:44:04 5
Watch active calls on an Asterisk PBX

Show active calls as the happen on an Asterisk server. Note that the Asterisk command (in single quotes) is formatted for Asterisk 1.6. Use the -n flag on the watch command to modify the refresh period (in seconds - default is 2 seconds). Show Sample Output
This is sample output - yours may be different.
```
3 active calls
72 calls processed
```
7

watch -n 1 "sudo asterisk -vvvvvrx 'core show channels' | grep call"

mheadd · 2010-03-26 15:42:13 10
OSX: Hear pronunciation of a word

I often use this command to learn pronunciation of unfamiliar words.
This is sample output - yours may be different.
2

say WORD

haivu · 2010-03-26 15:23:32 7
Create colorized html file from Vim or Vimdiff

While editing a source file in vim, or using vimdiff to compare two or more files, the ':TOhtml' command can be used to export each buffer as an html file, including syntax highlighting and vimdiff colorization. If you are in insert mode in vim, you will have to type :TOhtml This will open a new buffer filled with html, which you can then save.
This is sample output - yours may be different.
28

:TOhtml

bartonski · 2010-03-26 15:01:34 15
Upload an image to Twitpic

This CLI aims at uploaded a image file (PNG, JPEG, GIF...) to the Web 2.0 Twitpic service (http://twitpic.com/). A valid Twitter account is needed. Show Sample Output
This is sample output - yours may be different.
```
The image will be uploaded to the Twitpic.com service:

<?xml version="1.0" encoding="UTF-8"?>
<rsp status="ok">
 <statusid>11086128502</statusid>
 <userid>7707822</userid>
 <mediaid>1b0dux</mediaid>
 <mediaurl>http://twitpic.com/1b0dux</mediaurl>
```
0

curl -F "username=mytwiterlogin" -F "password=mytwitterpassword" -F "message=My image description" -F media=@"./image.png" http://twitpic.com/api/uploadAndPost

Nicolargo · 2010-03-26 12:20:04 4
easily find megabyte eating files or directories

sorts the files by integer megabytes, which should be enough to (interactively) find the space wasters. Now you can dush for the above output, dush -n 3 for only the 3 biggest files and so on. It's always a good idea to have this line in your .profile or .bashrc Show Sample Output
This is sample output - yours may be different.
```
2       tools
4       kernel
6       firmware
14      Documentation
15      include
17      net
17      sound
28      fs
94      arch
189     drivers
```
29

alias dush="du -sm *|sort -n|tail"

funky · 2010-03-26 10:18:57 15
show your private/local ip address
This is sample output - yours may be different.
-3

ifconfig | awk '/inet addr/ &&! /127.0.0.1/{ gsub(/addr:/,""); print $2 }'

OJM · 2010-03-26 10:07:14 3
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list block devices

Shows all block devices in a tree with descruptions of what they are.

View non-printing characters with cat

Useful to detect number of tabs in an empty line, DOS newline (carriage return + newline). A tool that can help you understand why your parsing is not working.

Provide the ten largest subfolders in the current folder

add a backup (or any other) suffix to a file

Very helpful when you've got complex filenames and needs to change just some small parts of it. Renaming a file called "i-made-a-small-typo-right-here" to "i-made-a-big-typo-right-here": $ mv -vi i-made-a-{small,big}-typo-right-here You could also copy multiple files, edit, remove, process, etc.

sorting file contents into individual files with awk

This command will sort the contents of FILENAME by redirecting the output to individual .txt files in which 3rd column will be used for sorting. If FILENAME contents are as follows: foo foo A foo bar bar B bar lorem ipsum A lorem Then two files called A.txt and B.txt will be created and their contents will be: A.txt foo foo A foo lorem ipsum A lorem and B.txt will be bar bar B bar

Validate all XML files in the current directory and below

If everything validates, there's no output. Can be handy to run on a cron job set up to email output.

Lets Tux say the random fact. [add it to .bashrc to see it in new terminal window]

Find the real procesor speed when you use CPU scaling [cpuspeed]

We don't use CPU scaling, but just in case you do, there is something interesting to note. If you look at the /proc/cpuinfo, the speed listed is current running speed of the processors and not the real speed of the chip.

Remote control for Rhythmbox on an Ubuntu Media PC

Note: you'll want to set up pub-key ssh auth. Gives you a quick means of changing volume/tracks/etc for rhythmbox on a remote machine. E.g.: rc --next # Play next track rc --print-playing # Grab the name rc --volume-down rc --help

Monitor dynamic changes in the dmesg log.

Other logs can be monitored similarly, e.g. $ watch "tail -15 /var/log/daemon.log"

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