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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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Repeatedly send a string to stdout-- useful for going through "yes I agree" screens

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Alias TAIL for automatic smart output

Run the alias command, then issue $ps aux | tail and resize your terminal window (putty/console/hyperterm/xterm/etc) then issue the same command and you'll understand. $ ${LINES:-`tput lines 2>/dev/null||echo -n 12`} Insructs the shell that if LINES is not set or null to use the output from `tput lines` ( ncurses based terminal access ) to get the number of lines in your terminal. But furthermore, in case that doesn't work either, it will default to using the default of 80. The default for TAIL is to output the last 10 lines, this alias changes the default to output the last x lines instead, where x is the number of lines currently displayed on your terminal - 7. The -7 is there so that the top line displayed is the command you ran that used TAIL, ie the prompt. Depending on whether your PS1 and/or PROMPT_COMMAND output more than 1 line (mine is 3) you will want to increase from -2. So with my prompt being the following, I need -7, or - 5 if I only want to display the commandline at the top. ( http://www.askapache.com/linux/bash-power-prompt.html ) 275MB/748MB [7995:7993 - 0:186] 06:26:49 Thu Apr 08 [askapache@n1-backbone5:/dev/pts/0 +1] ~ $ In most shells the LINES variable is created automatically at login and updated when the terminal is resized (28 linux, 23/20 others for SIGWINCH) to contain the number of vertical lines that can fit in your terminal window. Because the alias doesn't hard-code the current LINES but relys on the $LINES variable, this is a dynamic alias that will always work on a tty device.

Recall last argument of previous command

!$ recalls the last argument of the previous command. This is very useful when you have to operate several operations on the same file for example.

Set the hardware date and time based on the system date

return external ip

curl inet-ip.info -> 113.33.232.62\n curl inet-ip.info/ip -> 113.33.232.62 curl inet-ip.info/json -> JSON print curl inet-ip.info/json/indent -> JSON pretty print curl inet-ip.info/yaml -> YAML format curl inet-ip.info/toml -> TOML format http://inet-ip.info

Virtualbox rsync copy (without defining any virtualbox configuration)

That is, after running `vagrant ssh-config` to determine ports and ip's: $ vagrant ssh-config Host default HostName 127.0.0.1 User vagrant Port 2200 UserKnownHostsFile /dev/null StrictHostKeyChecking no PasswordAuthentication no IdentityFile /Users/romanvg/tmp/.vagrant/machines/default/virtualbox/private_key IdentitiesOnly yes LogLevel FATAL

Show me a histogram of the busiest minutes in a log file:

Busiest seconds: $ cat /var/log/secure.log | awk '{print substr($0,0,15)}' | uniq -c | sort -nr | awk '{printf("\n%s ",$0) ; for (i = 0; i

Serve current directory tree at http://$HOSTNAME:8080/

raw MySQL output to use in pipes

-N removes header -s removes separator chars -r raw output After using these options, the MySQL ouptut can be used with pipes very easily

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