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Terminate a find after the first match is found.

If you know that you want only the first match from a 'find' command, this will terminate the find as soon as a match is found. Recent versions of GNU find have the -quit parameter, which does the same thing as this, so this is only useful if you are stuck with an older version of find. or need to write a backward portable script. I can't take credit for this - I saw it on a chat room where I work and thought it was useful, so am sharing it here both for others, and in case I want to remember it in the future. Show Sample Output
This is sample output - yours may be different.
```
$ /bin/sh -c 'find . -name SomeRandomFile.java -print -exec kill $$ \;'
./path/to/SomeRandomFile.java
Terminated
```
0

/bin/sh -c 'find . -name FILENAME -print -exec kill $$ \;'

richardneish · 2011-07-20 16:51:18 5
Create a local compressed tarball from remote host directory
This is sample output - yours may be different.
0

ssh user@host "tar -czf - /path/to/dir" > dir.tar.gz

mossholderm · 2011-12-15 04:12:54 2
Kill all threads from a MySQL user

Kills all the threads from the user provided in the WHERE request. Can be refined through the SQL request, of course, see http://dev.mysql.com/doc/refman/5.1/en/processlist-table.html for the available columns.
This is sample output - yours may be different.
0

mysql -BNe "SELECT id FROM processlist WHERE user = 'redmine';" information_schema | while read id; do mysqladmin kill $id; done

anarcat · 2012-03-09 17:37:23 7
Show duplicate lines in a file

The following displays only the entries that are duplicates. Show Sample Output
This is sample output - yours may be different.
```
2 Alex Jason:200:Sales
2 Emma Thomas:100:Marketing
```
0

sort namesd.txt | uniq ?cd

ankush108 · 2012-06-26 19:23:58 3
Show alive host on network
This is sample output - yours may be different.
0

nmap -sP 192.168.0.* | grep Host | tr "(" ")" | cut -d\) -f2

szimbaro · 2013-02-27 12:40:45 4
remove duplicate with change order
This is sample output - yours may be different.
0

awk '{if(!seen[$0]++) {print $0;}}'

kotokz · 2013-07-01 03:46:18 7
Detect Connections On Port - Android

Show If Someone Is Connected To The Android Device On And Get Their IP Address
This is sample output - yours may be different.
0

netstat -lptu | grep -E "22.*ESTABLISHED" | cut -s -d ':' -f2 | awk '{print $2}'

DarkXDroid · 2014-06-13 08:38:16 23
Print out which hosts are not running specific process

Given a hosts list, ssh one by one and echo its name only if 'processname' is not running. Show Sample Output
This is sample output - yours may be different.
```
hostone
hosttwo
hostthree
```
0

for i in `cat hosts_list`; do RES=`ssh myusername@${i} "ps -ef " |awk '/[p]rocessname/ {print $2}'`; test "x${RES}" = "x" && echo $i; done

arlequin · 2014-10-03 14:57:54 9

Fetches NOAA text product weather data. (US only)

The only requirement to make this work is some research on what your local NOAA "zone" is. One place to take a look is: http://www.nws.noaa.gov/mirs/public/prods/maps/pfzones_list.htm Show Sample Output

wget -q -O - http://weather.noaa.gov/pub/data/observations/state_roundup/ny/nyz003.txt http://weather.noaa.gov/pub/data/forecasts/zone/ny/nyz003.txt | less

nanoscript · 2015-01-17 05:09:05 7

Use /etc/fortune as signature in thunderbird

In Thunderbird open the settings for your email account, mark the checkbox for 'Attach the signature from a file instead' and use the filename '~/mailsignature.txt' Now every time when you open a terminal you see the fortune displayed in the terminal and the mail signature gets regenerated. Show Sample Output
This is sample output - yours may be different.
```
--
After an instrument has been assembled, extra components will be found on the bench.
```
0

echo 'echo /etc/games/fortune > ~/mailsignature.txt' >> .bashrc

dededede · 2015-11-07 15:17:12 11
Shows the size of folders and files, sorted from highest to lowest

Shows the size of folders and files, sorted from highest to lowest in human format (gb, mb,kb,etc...) Very useful to see the folders that are occupying more space. Show Sample Output
This is sample output - yours may be different.
```
88G	home
6,8G	usr
5,4G	var
860M	lib
666M	opt
152M	boot
49M	data
17M	etc
13M	sbin
13M	run
13M	bin
420K	dev
188K	root
16K	tmp
```
0

du -sh * | sort -rh

khain · 2017-04-03 10:23:40 33
list bosh2 deployments
This is sample output - yours may be different.
0

bosh deployments --json | jq '.Tables[0].Rows[][0]' --raw-output

jim80net · 2017-05-23 21:08:01 17
Connect to docker as root
This is sample output - yours may be different.
0

docker run -u 0 -it container_id /bin/bash

tofu00 · 2017-11-29 10:08:25 21
repeat any string or char n times without spaces between

Using zsh parameter expansion Show Sample Output
This is sample output - yours may be different.
```
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```
0

echo ${(l:80::+:)}

rjf89 · 2018-01-04 18:34:16 20
generate pem cert from host with ssl port
This is sample output - yours may be different.
0

openssl s_client -connect HOSTNAME.at:443 -showcerts </dev/null 2>/dev/null | openssl x509 -outform PEM > meinzertifikat.pem

dbiesecke · 2021-09-01 14:05:36 176
Customizable Search Context

customizable context searches - if you know sed, this is a basis for more complex context control than grep --context offers Show Sample Output
This is sample output - yours may be different.
```
$ echo -n search\>\  ; read SEARCH_STRING && sed -n "/$SEARCH_STRING/{n;p;n;p;n;p;q}" /etc/passwd
search> sshd
suse-ncc:x:105:107:Novell Customer Center User:/var/lib/YaST2/suse-ncc-fakehome:/bin/bash
uucp:x:10:14:Unix-to-Unix CoPy system:/etc/uucp:/bin/bash
uuidd:x:100:101:User for uuidd:/var/run/uuidd:/bin/false
```
0

echo -n search\>\ ; read SEARCH_STRING && sed -n "/$SEARCH_STRING/{n;p;n;p;n;p;q}" [file-to-search]

wwest4 · 2009-02-05 18:07:23 28
Activate the mandatory proxy under ubuntu

Solution to activate (or deactivate with false instead of true) the global mandatory proxy under Ubuntu (not tested elsewhere). Others keys you can configure : gconftool-2 --set "/system/http_proxy/host" --type string " gconftool-2 --set "/system/http_proxy/port" --type int 8080 gconftool-2 --set "/system/http_proxy/ignore_hosts" --type list --list-type string ["localhost","127.0.0.1","*.local"] gconftool-2 --set "/system/proxy/mode" --type string manual
This is sample output - yours may be different.
0

gconftool-2 --set "/system/http_proxy/use_http_proxy" --type boolean true

Kysic · 2009-02-13 22:00:52 10
Open windows executable, file, or folder from cygwin terminal

This executes faster than cygstart.exe I put this in a script and added it to my path: cat `which explore.sh` #!/bin/bash if [ $# -eq 0 ]; then explorer.exe $( cygpath `pwd` -w ) & else explorer.exe $( cygpath $1 -w ) & fi; Using the script you just type explore.sh file_or_executable Note: you can do this for any file that has an associated executable in the windows registry. This is quite handy if you want to open pictures or movies from xterm. Show Sample Output
This is sample output - yours may be different.
```
$ explorer $( cygpath "/path/to/executable" -w ) # Run the windows executable
$ explorer $( cygpath "movie file.avi" -w ) # Plays movie file with default player
$ explorer $( cygpath "/path/to/a folder" -w ) # Opens a folder in windows explorer
```
0

explorer $( cygpath "/path/to/file_or_exe" -w )

Highwayman · 2009-07-22 17:00:21 3633
How to check webserver by Nikto

This is wonderful perl script to check the web server security and vulnerability .Get it from here :http://www.cirt.net/nikto2 Here are some key features of "Nikto": ? Uses rfp's LibWhisker as a base for all network funtionality ? Main scan database in CSV format for easy updates ? Determines "OK" vs "NOT FOUND" responses for each server, if possible ? Determines CGI directories for each server, if possible ? Switch HTTP versions as needed so that the server understands requests properly ? SSL Support (Unix with OpenSSL or maybe Windows with ActiveState's Perl/NetSSL) ? Output to file in plain text, HTML or CSV ? Generic and "server type" specific checks ? Plugin support (standard PERL) ? Checks for outdated server software ? Proxy support (with authentication) ? Host authentication (Basic) ? Watches for "bogus" OK responses ? Attempts to perform educated guesses for Authentication realms ? Captures/prints any Cookies received ? Mutate mode to "go fishing" on web servers for odd items ? Builds Mutate checks based on robots.txt entries (if present) ? Scan multiple ports on a target to find web servers (can integrate nmap for speed, if available) ? Multiple IDS evasion techniques ? Users can add a custom scan database ? Supports automatic code/check updates (with web access) ? Multiple host/port scanning (scan list files) ? Username guessing plugin via the cgiwrap program and Apache ~user methods Show Sample Output
This is sample output - yours may be different.
```
nikto.pl -h webserv
- Nikto v2.03/2.04
---------------------------------------------------------------------------
+ Target IP:          198.162.5.2
+ Target Hostname:    wevserv
+ Target Port:        80
+ Start Time:         2009-08-30 10:17:12
---------------------------------------------------------------------------
+ Server: Apache/2.2.0 (Fedora)
+ No CGI Directories found (use '-C all' to force check all possible dirs)
+ Apache/2.2.0 appears to be outdated (current is at least Apache/2.2.9). Apache 1.3.39 and 2.0.61 are also current.
+ OSVDB-877: TRACE / : TRACE option appears to allow XSS or credential theft. See http://www.cgisecurity.com/whitehat-mirror/WhitePaper_screen.pdf for details
+ 3577 items checked: 2 item(s) reported on remote host
+ End Time:        2009-08-30 10:17:21 (9 seconds)
---------------------------------------------------------------------------
+ 1 host(s) tested

Test Options: -h webserv
---------------------------------------------------------------------------
```
0

nikto.pl -h yourwebserver

unixbhaskar · 2009-08-29 04:54:43 8
Bash function to see what the day ends in

A command to find out what the day ends in. Can be edited slightly to find out what "any" output ends in. NB: I haven't tested with weird and wonderful output. Show Sample Output
This is sample output - yours may be different.
```
y
```
0

date +%A | cut -c $(( $(date +%A | wc -c) - 1 ))

DaveQB · 2010-04-07 00:23:15 5
list all file extensions in a directory

If we want files with more than one extension, like .tar.gz, only appear the latest, .gz: ls -Xp /path/to/dir | grep -Eo "\.[^./]+$" | uniq Show Sample Output
This is sample output - yours may be different.
```
.tar.gz
.py
.pyc
```
0

ls -Xp /path/to/dir | grep -Eo "\.[^/]+$" | uniq

karpoke · 2010-08-12 16:32:54 6
Bulk add urls to your Instapaper account

Note, you need to replace the email address with your private Instapaper email address. There are a bunch of possible improvements such as, - Not writing a temp file - Doesnt strip tags (tho Instapaper does thankfully) - Shouldnt require 2 curls
This is sample output - yours may be different.
0

for url in `cat urls `; do title=`curl $url 2>&1 | grep -i '<title>.*</title>'` && curl $url > /tmp/u && mail -s "$title" your-private-instapaper-address@instapaper.com < /tmp/u ; done

iamarchimedes · 2010-10-16 19:10:19 4
find a particular string on an unmounted partition
This is sample output - yours may be different.
0

hexdump -e '8/1 "%02X ""\t"" "' -e '8/1 "%c""\n"' /dev/sda1 | less /mystring

gerard · 2010-12-17 10:28:40 4
Displays the packages which contain the specified file.
This is sample output - yours may be different.
0

dpkg -S locale.alias

repson0 · 2011-01-05 21:41:41 3
Generate Pascal's Triangle

http://en.wikipedia.org/wiki/Pascal%27s_triangle This one's for bartonski. Enjoy. 132 characters. I'm sure we can do better. Note: after row 64 we overflow integer maths. Show Sample Output
This is sample output - yours may be different.
```
1 
1 1 
1 2 1 
1 3 3 1 
1 4 6 4 1 
1 5 10 10 5 1 
1 6 15 20 15 6 1 
1 7 21 35 35 21 7 1 
1 8 28 56 70 56 28 8 1 
```
0

for((r=1;r<10;r++));do v=1;echo -n "$v ";for((c=1;c<$r;c++));do v2=$(($(echo "$v*($r-$c)/$c")));echo -n "$v2 ";v=$v2;done;echo;done

flatcap · 2011-02-10 18:38:04 239
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Use AbiWord to generate a clean HTML document from a Microsoft Word document.

Credit goes to @Porges from http://stackoverflow.com/questions/67964/what-is-the-best-free-way-to-clean-up-word-html.

Check which files are opened by Firefox then sort by largest size.

Just refining last proposal for this check, showing awk power to make more complex math (instead /1024/1024, 2^20). We don't need declare variable before run lsof, because $(command) returns his output. Also, awk can perform filtering by regexp instead to call grep. I changed the 0.0000xxxx messy output, with a more readable form purging all fractional numbers and files less than 1 MB.

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Find pages returning 404 errors in apache logs

Finds the top ten pages returning an http response code of 404 in an apache log.

Kick user

Create a pdf version of a manpage

Quick and dirty version. I made a version that checks if a manpage exists (but it's not a oneliner). You must have ps2pdf and of course Ghostscript installed in your box. Enhancements appreciated :-)

Update twitter from command line without reveal your password

Update twitter from commandline, without revealing your password and without having to type it interactively. You 'll need to put a line "machine twitter.com login TWITTERUSER password TWITTERPASS" in $HOME/.netrc and better chmod 600 that file.

Lists unambigously names of all xml elements used in files in current directory

This set of commands was very convenient for me when I was preparing some xml files for typesetting a book. I wanted to check what styles I had to prepare but coudn't remember all tags that I used. This one saved me from error-prone browsing of all my files. It should be also useful if one tries to process xml files with xsl, when using own xml application.

Uninstall bloatware on your android device without root.

List all packages with: pm list packages|cut -d: -f2

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

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