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Localize a Public IP on a specific interface

My first command :) I made this command to log public addresses of a virtual interface who connects random VPN servers around the world. Show Sample Output
This is sample output - yours may be different.
```
date/hour/ipaddress/ip location
```
0

(date "+%d-%m-%Y %H:%M:%S";curl -s --interface lo:1 ifconfig.me| xargs -t geoiplookup 2>&1)|sed -e 's/geoiplookup/IP:/g' -e 's/GeoIP Country Edition/Country/g'|tr -s "\n" " "|sed 'a\ '

guerito · 2013-10-07 15:28:55 6
redirect STDOUT and STDERR to STDOUT and also to a file
This is sample output - yours may be different.
0

command_line 2>&1 | tee -a output_file

esplinter · 2014-04-05 13:02:30 6
My git log alias
This is sample output - yours may be different.
0

git log --graph --decorate --pretty=oneline --abbrev-commit

nicolasmccurdy · 2014-07-16 02:07:23 6
relax with philosophy while taking a dig
This is sample output - yours may be different.
0

for i in `seq 1 100`; do echo "I think therefore I am" | espeak; done

marlboro · 2014-11-08 06:30:11 10
Remove excess noise from a set of mp4 videos.

Full command: for f in input/*; do BN=$(basename "$f"); ffmpeg -i "$f" -vn "temp/$BN.flac"; sox "temp/$BN.flac" "temp/$BN-cleaned.flac" noisered profile 0.3; ffmpeg -i "$f" -vcodec copy -an "temp/$BN-na.mp4"; ffmpeg -i "temp/$BN-na.mp4" -i "temp/$BN-cleaned.flac" "output/$BN"; done This was over the 255 character limit and I didn't feel like deliberately obfuscating it. 1. Create 'input', 'output' and 'temp' directories. 2. Place the files that you want to remove the hiss/static/general noise from in the input directory. 3. Generate a noise reduction profile with sox using 'sox an_input_file.mp4 -n trim x y noiseprof profile', where x and y indicates a range in seconds that only the sound you want to eliminate is present in. 4. Run the command.
This is sample output - yours may be different.
0

for f in input/*; do BN=$(basename "$f"); ffmpeg -i "$f" -vn "temp/$BN.flac"...

samcamwilliams · 2015-03-01 02:48:19 8
count files and directories disk space usage

can be pointed at specific files using: du -ahc /path/to/file counting only directories is faster: du -hc .
This is sample output - yours may be different.
0

du -ahc

lolssl · 2015-10-01 19:38:39 10
replace color in image sequence
This is sample output - yours may be different.
0

mogrify -path ../png_white/ -fuzz 3.5% -fill white -opaque "#50566b" *.png

ceddi · 2016-10-17 20:01:00 16

Run a job in the background and prefix it's output with some string. This is particularly useful if you are running inside a docker container in a startup script (sue me, I'll run two jobs in a docker container if I want to) and you can run something like: /usr/sbin/nginx 2>&1 | awk '{print "[NGINX] " $0}' & /opt/jws-3.1/tomcat8/bin/catalina.sh run 2>&1 | awk '{print "[TOMCAT] " $0}' & while true; do ; done it can also be combined with tee to create a file log as well as a stdout log, for example if the script above where a script called "/bin/start-container.sh" then you could run /bin/start-container.sh | tee /var/log/containerlogs Show Sample Output

nginx 2>&1 | awk '{print "[NGINX] " $0}' &

hvindin · 2017-04-25 22:18:38 20

kill the first docker container in docker ps

Useful when developing and you donut usually have other docker commands running Show Sample Output
This is sample output - yours may be different.
```
 2018-05-24 15:06:10 ? |ruby-2.4.1| Jim-Park-MacBook-Pro in ~/workspace/example
±  |master ?| ? docker kill $(docker ps -q)
abc123456789
```
0

docker kill $(docker ps -q)

jim80net · 2018-05-24 22:11:06 204
find&grep all in once

calls grep on all non-binary files returned by find on its current working directory Show Sample Output
This is sample output - yours may be different.
```
./Main.java://	public static void main(String[] args) throws IOException
```
-1

#!/bin/bash find | grep -P -v "(class)|(zip)|(png)|(gz)|(gif)|(jpeg)|(jpg)" | xargs -I @ grep -H $1 @

kirdie · 2011-10-14 13:28:49 4
Terminate script or shell if not launched as root

This example code is intended to be used as a root permissions check in a script. It makes use of the $EUID (effective user ID) environment variable which is fully su- and sudo-safe.
This is sample output - yours may be different.
-1

if [[ $EUID -ne 0 ]]; then echo 'Root permissions required! Exiting.'; exit; fi

lordtoran · 2011-11-19 23:06:52 8
Spotlight Server Disabled
This is sample output - yours may be different.
-1

cd /System/Library/LaunchDaemons; sudo launchctl load -w com.apple.metadata.mds.plist

evandrix · 2012-05-16 15:42:10 4
umount --rbind mount with submounts

set CDIR for it to work right..
This is sample output - yours may be different.
-1

for i in `cat /proc/mounts | awk '{print $2}' | grep ${CDIR} |sort -r` ; do umount $i; done

mordjah · 2013-05-07 23:46:27 5
Tar - Compress by excluding folders

Tar - Compress by excluding folders Show Sample Output
This is sample output - yours may be different.
```
Tar - Compress by excluding folders
```
-1

tar -cvf /path/dir.tar /path/dir* --exclude "/path/dir/name" --exclude "/path/dir/opt"

sandeepverma · 2009-12-15 09:48:41 3
Get iPhone OS firmware URL (.ipsw)

Usage: get-ipsw device-name generation-string firmware-version For example: get-ipsw iPod 2,1 4.0 Different generation strings: iPhone 3G: iPhone 1,2 iPhone 3GS: iPhone 2,1 iPod touch 2G: iPod 2,1 iPod touch 3G: iPod 3,1 This can be used with idevicerestore (I haven't tried it though). http://github.com/posixninja/idevicerestore Based on: http://www.tuaw.com/2010/06/21/ios-4-0-firmware-release-expected-momentarily-quick-terminal-ti/ Show Sample Output
This is sample output - yours may be different.
```
http://appldnld.apple.com.edgesuite.net/content.info.apple.com/iPhone4/061-7435.20100621.tr49t/iPod2,1_4.0_8A293_Restore.ipsw
```
-1

get-ipsw(){ curl -s -L http://phobos.apple.com/version | sed -rn "s|[\t ]*<string>(http://appldnld\.apple\.com\.edgesuite\.net/content\.info\.apple\.com/iPhone[0-9]?/[^/]*/$1$2_$3_[A-Z0-9a-z]*_Restore\.ipsw)</string>|\1|p" | uniq; }

matthewbauer · 2010-06-22 02:34:15 5

Get a file's type and metadata

Some shell newbies don't know this very handy file management related command so I decided to include it here. You need to have the "file" package installed. Show Sample Output

-1

file <filename>

lordtoran · 2011-11-19 23:39:29 3

list each file/directory size in a directory
This is sample output - yours may be different.
-1

ls | xargs -I{} du -sh {}

kenshin54 · 2013-07-28 04:18:25 8
Push current task to background (paused) and resume it.

Saves opening another console terminal (eg. CTRL+ALT+F[n]) or opening another remote terminal. Ctrl+Z pauses the current task and pushed it to the background, leaving you with a command prompt for those "Oh crap I forgot to change xyz before I ran that and it'll take forever if I Ctrl+C and start again..." situations. Typing 'fg' (shorthand for foreground, that's how I remember it) will resume the paused task. Show Sample Output
This is sample output - yours may be different.
```
$ dd if=/dev/zero of=test.file
^Z
[1]+  Stopped                 dd if=/dev/zero of=test.file
$ echo "I needed to do this."
I needed to do this.
$ fg
dd if=/dev/zero of=test.file
```
-1

<CTRL+Z>; fg

kbrotheridge · 2014-04-06 14:21:08 7
Use ping to test if a server is up

Bash scrip to test if a server is up, you can use this before wget'ing a file to make sure a blank one isn't downloaded.
This is sample output - yours may be different.
-1

if [ "$(ping -q -c1 google.com)" ];then wget -mnd -q http://www.google.com/intl/en_ALL/images/logo.gif ;fi

alf · 2010-03-23 04:15:03 10
Convert wma to wav
This is sample output - yours may be different.
-1

for i in *.wma; do mplayer -vo null -vc dummy -af resample=44100 -ao pcm:waveheader:file="${i%.wma}.wav" "$i" ; done

schef · 2011-01-18 14:41:17 3
Show seconds since modified of newest modified file in directory
This is sample output - yours may be different.
-1

echo $(( $( date +%s ) - $( stat -c %Y * | sort -nr | head -n 1 ) ))

depesz · 2011-05-12 14:29:45 3
lsof - cleaned up for just open listening ports, the process, and the owner of the process
This is sample output - yours may be different.
-1

alias oports="echo -e "User:\tCommand:\tPort:\n----------------------------" && lsof -i 4 -P -n | awk '/LISTEN/ {print $3, $1, $9}' | sed 's/ [a-z0-9\.\*]*:/ /' | sort -u -k 3 -n | xargs printf '%-10s %-10s %-10s\n'"

rthemocap · 2011-08-04 16:39:04 4
Get video information with ffmpeg

mp4box is great when working with mp4s
This is sample output - yours may be different.
-1

mp4box -info video.mp4

alienresident · 2013-01-18 14:43:29 5
Binary digits Matrix effect
This is sample output - yours may be different.
-1

perl -e 'use Term::ANSIColor;$|++; while (1) { print color("green")," " x (rand(35) + 1), int(rand(2)), color("reset") }'

mvrpl · 2017-04-26 14:05:48 20
bash function to check for something every 5 seconds

Every seconds do Show Sample Output
This is sample output - yours may be different.
```
Every 10,0s: ls /tmp                           Fri Sep  4 19:19:11 2009
...
<list of files>
```
-1

watch -n <seconds> <command>

aonick · 2009-09-04 15:19:42 3
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use SHIFT + ALT to toggle between two keyboard layouts

change the last two-character abbreviation to any layout abbreviation you want. This command will only run in the current session, add to your ~/.bashrc to make this permanent.

commandline dictionary

Note: 1) Replace 'wonder' with any word you looking the meaning for in the above example 2) Need to install these packages: wordnet & wordnet-base (latter should be automatically installed because of dependency) 3) Combined size of packages is about 30MB on my old ubuntu system (I find it worth it)

list block devices

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

Bash alias for creating screen session containing IRSSI, named irssi, while checking if existing session is created

Bash alias for easy irssi within screen, attempts to attach to existing irssi session, if one exists, otherwise creates one - Including wipe for when system reboots and leaves "dead" session.

List alive hosts in specific subnet

Works on any machine with nmap installed. Previous version does not work on machines without "seq". Also works on subnets of any size.

Fix for error perl: warning: Setting locale failed.

Fix for ubuntu error: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_GB:en", LC_ALL = (unset), LANG = "en_GB.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory

Make a DVD ISO Image from a VIDEO_TS folder on MacOSX

/path/ is the root folder of the DVD, not the VIDEO_TS folder.

Realtime lines per second in a log file

Using tail to follow and standard perl to count and print the lps when lines are written to the logfile.

Generate a random password 30 characters long

According to the gpg(1) manual: --gen-random 0|1|2 count Emit count random bytes of the given quality level 0, 1 or 2. If count is not given or zero, an endless sequence of random bytes will be emitted. If used with --armor the output will be base64 encoded. PLEASE, don't use this command unless you know what you are doing; it may remove precious entropy from the system! If your entropy pool is critical for various operations on your system, then using this command is not recommended to generate a secure password. With that said, regenerating entropy is as simple as: $ du -s / This is a quick way to generate a strong, base64 encoded, secure password of arbitrary length, using your entropy pool (example above shows a 30-character long password).

network interface and routing summary

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