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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
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List all active access_logs for currently running Apache or Lighttpd process

Ever logged into a *nix box and needed to know which webserver is running and where all the current access_log files are? Run this one liner to find out. Works for Apache or Lighttpd as long as CustomLog name is somewhat standard. HINT: works great as input into for loop, like this: $ for i in `lsof -p $(netstat -ltpn|awk '$4 ~ /:80$/ {print substr($7,1,index($7,"/")-1)}')| awk '$9 ~ /access.log$/ {print $9| "sort -u"}'` ; do echo $i; done Very useful for triage on unfamiliar servers!

Emptying a text file in one shot

Within vi allow to empty a text file in one shot

Find default gateway (proper at ppp connections too)

Execute a command without saving it in the history

Yes, by correctly setting the HIST* variables you can make certain commands not saved in history. But that's complicated and easy to make a mistake. If you set HISTFILE= to blank, nothing in your current shell session will be saved in history. Although this is not a precise answer to the subject, but it's very simple.

rename all files with "?" char in name

replace all "?" characters in filename to underscore

Create a new file

Mount important virtual system directories under chroot'ed directory

The command is useful when, e.g., booting an existing system with a rescue or installation CD where you need to chroot into the hard-disk and be able to do stuff which accesses kernel info (e.g. when installing Ubuntu desktop with LVM2 you need to mount and chroot the hard disk from a shell window in order to install packages and run initramfs inside chroot). The command assumes that /mnt/xxx is where the chroot'ed environment's root file system on the hard disk is mounted.

What is my public IP-address?

Very effective, use only DNS protocol. The @ part is optional if you already set opendns servers as default ns servers.

Paste OS X clipboard contents to a file on a remote machine

Redirects the contents of your clipboard through a pipe, to a remote machine via SSH.

shorten url using curl, sed and is.gd

Just create a function in your .bashrc like this shorturl() { curl -s -d URL="$1" http://is.gd/create.php | sed '/Your new shortened/!d;s/.*value="$[^"]*$".*/\1/' }

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