All commands

All commands (14,187)

sorted by

Show local/public IP adresses with or without interface argument using a shell function for Linux and MacOsX

Like the tiltle said, you can use an argument too ( the interface ) MyIps eth0 will show only the IP of this interface and the public IP ( tested with Linux ) You can add that function in ~/.bashrc, then . ~/.bashrc Now you are ready to call this function in all your terms... Show Sample Output
This is sample output - yours may be different.
```
local:
10.0.0.1
10.0.0.221
192.168.0.1

public:
212.34.55.218
```
1

MyIps(){ echo -e "local:\n$(ifconfig $1 | grep -oP 'inet (add?r:)?\K(\d{1,3}\.){3}\d{1,3}')\n\npublic:\n$(curl -s sputnick-area.net/ip)"; }

sputnick · 2009-12-06 22:52:31 6

Show the meta information on a package (dependency , statuts ..) on debian derivative distro

Show Sample Output

-2

apt-cache show Your_package

eastwind · 2009-12-06 14:50:34 3

List content of a package (debian derivative distro)

Show Sample Output

-2

dpkg -L Your_Package

eastwind · 2009-12-06 14:49:04 3

Finding all numbers that are bigger then 1 in vim

If we have a csv like structure: 10,50,'something' And we wish to find all numbers that are bigger then 1 (or find a number that is bigger then 1 regardless of the structure), including numbers that start with 1 such as 10 and above. Show Sample Output
This is sample output - yours may be different.
```
10
```
0

/^$[2-9]\d*\|1\d+$

ik_5 · 2009-12-06 13:01:48 3
Audible warning when a downloading is finished

This command can be set as an alias in ~/.bashrc For example (in my case) I have : alias watchDl='while [ "$(ls $filePart)" != "" ]; do sleep 5; done; mpg123 /home/.../warning.mp3" ' Then I just need to - initialize filePart (e.g. filePart="*bigFile*rar.part") - launch watchDl
This is sample output - yours may be different.
1

while [ "$(ls $filePart)" != "" ]; do sleep 5; done; mpg123 /home/.../warning.mp3

mrttlemonde · 2009-12-06 10:55:09 9
Kill multiple Locked connection by a single user in MYSQL DB
This is sample output - yours may be different.
0

for i in `mysqladmin -h x.x.x.x --user=root -pXXXX processlist | grep <<username>>| grep <<Locked>>| awk {'print $2'}` do mysqladmin -h x.x.x.x --user=root -pXXX kill $i; done;

r00t4u · 2009-12-06 05:46:48 3
Killing multiplpe process for one program like apache, wget, postfix etc.
This is sample output - yours may be different.
-2

ps aux| grep -v grep| grep httpd| awk {'print $2'}| xargs kill -9

r00t4u · 2009-12-06 05:39:50 7

Determining the excat memory usages by certain PID

this command gives you the total number of memory usuage and open files by the perticuler PID. Show Sample Output

pmap -d <<pid>>

r00t4u · 2009-12-06 05:34:46 8

Display Dilbert strip of the day

Requires display. Corrected version thanks to sputnick and eightmillion user.
This is sample output - yours may be different.
2

display http://dilbert.com$(curl -s dilbert.com|grep -Po '"\K/dyn/str_strip(/0+){4}/.*strip.[^\.]*\.gif')

wizel · 2009-12-05 19:35:27 13

convert pdf to graphic file format (jpg , png , tiff ... )

need imagemagick package Show Sample Output

convert sample.pdf sample.jpg

eastwind · 2009-12-05 19:27:37 8

mount a cdrom
This is sample output - yours may be different.
2

mount -t iso9660 /dev/cdrom /media/cdrom

eastwind · 2009-12-05 18:56:33 3
Show Network IP and Subnet

same thing as the other
This is sample output - yours may be different.
-1

ipcalc $(ifconfig eth0 | grep "inet addr:" | cut -d':' -f2,4 | sed 's/.+Bcast:/\//g') | awk '/Network/ { print $2 } '

solarislackware · 2009-12-05 15:00:32 3
Return IP Address

If you are interested in interfaces other than eth0 you will need to change eth0 to your interface name. You could use this mammoth to nab the ip4 addresses of all your interfaces perl -e '@_=`ifconfig -a`; sort(@_); foreach(@_) { /(inet addr\:)(\d+.\d+.\d+.\d+ )/; $_=$2; @uniq=grep($_ ne $prev && (($prev) = $_), @_);} print join "\n",@uniq,"\n"; ' it seems silly to have all this code when the following will work fine ifconfig -a | grep "inet " | awk -F":" ' { print $2 } ' | cut -d " " -f1 Show Sample Output
This is sample output - yours may be different.
```
10.10.10.10
```
0

perl -e '$_=`ifconfig eth0`;/\d+.\d+.\d+.\d+ /; print $&,"\n";'

solarislackware · 2009-12-05 14:24:48 33
Return IP Address
This is sample output - yours may be different.
-3

awk '/inet end/ {print $3}' <(ifconfig eth0)

voyeg3r · 2009-12-05 10:45:31 4
Router discovery
This is sample output - yours may be different.
0

awk 'NR==2 {print $1}' /proc/net/arp

voyeg3r · 2009-12-05 10:36:06 3
Show local IP
This is sample output - yours may be different.
-2

ifconfig eth0 | grep "inet:" | cut -d ":" -f2 | cut -d " " -f1

guelfoweb · 2009-12-05 02:59:18 8
Router discovery
This is sample output - yours may be different.
4

sudo arp-scan 192.168.1.0/24 -interface eth0

guelfoweb · 2009-12-05 01:35:50 6
Show Network IP and Subnet

Require ips and ipcalc Show Sample Output
This is sample output - yours may be different.
```
192.168.0.1/24
```
-2

IP=`ifconfig eth0 | grep "inet addr:" | ips |cut -d ":" -f 2 | cut -d " " -f 1`;SUBNET=`ifconfig eth0 | grep "inet addr:" | ips |cut -d ":" -f 3 | cut -d " " -f 1`;RANGE=`ipcalc $IP/$SUBNET | grep "Network:" | cut -d ' ' -f 4`;echo $RANGE

guelfoweb · 2009-12-05 01:19:31 3
Capture data in ASCII. 1500 bytes

Sniffing traffic on port 80 only the first 1500 bytes
This is sample output - yours may be different.
2

tcpdump -ieth0 -n tcp port 80 -A -s1500

guelfoweb · 2009-12-05 00:59:16 3
Return IP Address
This is sample output - yours may be different.
0

ifconfig -a| awk 'BEGIN{FS="[ :]+"} /Bcast/{print $4}'

unixmonkey7109 · 2009-12-05 00:18:24 7
Make ABBA better (requires firefox)

ABBA would be more entertaining if they sang this.
This is sample output - yours may be different.
0

wget -O - -q http://www.azlyrics.com/lyrics/abba/takeachanceonme.html | sed -e 's/[cC]hance/dump/g' > ~/tdom.htm && firefox ~/tdom.htm

tighe · 2009-12-04 22:56:00 5

Monitor memory usage

Monitor with watch command and vmstat, memory usage Show Sample Output

watch vmstat -sSM

servermanaged · 2009-12-04 22:35:45 6

Return IP Address

grabs your local IP Address. Show Sample Output
This is sample output - yours may be different.
```
192.168.1.100
```
-3

ifconfig -a|grep Bcast:|cut -d\: -f2|awk '{print $1}'

metalx1000 · 2009-12-04 21:00:46 5
get daily wizard of id comic

Requires the date command. This also works with some other comics. Here's a bash script that displays daily Garfield, Id, and Andy Capp: http://putnamhill.net/cgi-bin/yahoo-comics.sh?ga,crwiz,crcap
This is sample output - yours may be different.
0

curl -o id.gif `date +http://d.yimg.com/a/p/uc/%Y%m%d/largeimagecrwiz%y%m%d.gif`

putnamhill · 2009-12-04 20:16:32 3
Find file containing namespace in a directory of jar files.

You could subsitute javax.servlet for any namespace you need. Show Sample Output
This is sample output - yours may be different.
```
javax.jsp_1.1.0.0_2-1.jar
javax.servlet_1.0.0.0_2-5.jar
```
1

for f in *.jar; do if jar -tf $f | grep -q javax.servlet; then echo $f; fi; done

wekoch · 2009-12-04 20:11:36 3
‹ First < 421 422 423 424 425 > 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

Check a server is up. If it isn't mail me.

Joker wants an email if the Brand X server is down. Set a cron job for every 5 mins with this line and he gets an email when/if a ping takes longer than 3 seconds.

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"

find .txt files inside a directory and replace every occurrance of a word inside them via sed

Convert one file from ISO-8859-1 to UTF-8.

Nothing fancy it just converts one file from one character encoding into another one.

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"

find the process that is using a certain port e.g. port 3000

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Go (cd) directly into a new temp folder

This command create a new temp directory using mktemp (to avoid collisions) and change the current working directory to the created directory.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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"

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