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Read source of some installed Perl module
This is sample output - yours may be different.
0

perldoc -m Some::Module

fibo · 2014-03-03 16:00:03 6
Wake up a remote computer

Wakes up a computer on your LAN with a Wake-On-LAN packet. MAC Address must match the NIC MAC, computer must have WOL enabled in the BIOS. Show Sample Output
This is sample output - yours may be different.
```
Sending magic packet to 255.255.255.255:9 with 00:00:DE:AD:BE:EF
```
0

wakeonlan 00:00:DE:AD:BE:EF

tyzbit · 2014-06-13 16:16:33 8
Open image file from command line

Works in Gnome
This is sample output - yours may be different.
0

eog someimg.jpg

dnlcorrea · 2014-10-05 00:58:46 8
Grep ip addresses from access attempts to a page and add them to an ipset referenced by an iptables rule
This is sample output - yours may be different.
0

grep page.php /var/log/httpd/access_log|awk '{print $1}'|sort|uniq|perl -e 'while (<STDIN>){chomp; $cmd=`ipset add banned -! -q $_`; }'

luchino7773 · 2015-05-13 07:08:59 10
Monitor memory fine-grained usage (e.g. firefox)

I have modified the original one-liner to allow it to manage multiple PIDs. However, I haven't found the way it can work properly with the watch command. NOTE: brace expand must be activated via "set -B" in order to this script can work. Show Sample Output
This is sample output - yours may be different.
```
961936 KB
```
0

cat $(echo "ls /proc/{`pidof firefox | sed -e 's/$/,/' -e 's/ /,/g'`}/smaps 2>/dev/null" | bash) | awk '/Rss/{sum += $2; } END{print sum, "KB"}'

pchalim · 2015-09-30 22:22:53 9
Delete a certificate from the macOS security keychain

Use `security list-keychains` to find possible keychains, and `security dump-keychain` to look for certificates. `sudo security delete-certificate` without arguments shows options for removing: by common name or by SHA-1 hash. This is especially useful if a certificate locks up Keychain Access.app, which happens for certificates with many SANs in macOS 10.12. Found via: http://stackoverflow.com/a/16019443
This is sample output - yours may be different.
0

sudo security delete-certificate -c 1000-sans.badssl.com

lgarron · 2017-04-06 01:40:04 21
get the public ip adress of server on shell
This is sample output - yours may be different.
0

ifconfig | grep "inet addr:" | cut -d: -f2 | awk {'print($1)'} | grep -v 127.0

aysadk · 2017-05-23 21:43:15 17
Disable mouse acceleration
This is sample output - yours may be different.
0

xset m default

tofu00 · 2017-11-29 10:17:53 28
git log1 alias

This command limits the oputut of git log to one-line per commit and an abbreviated commit ID. Show Sample Output
This is sample output - yours may be different.
```
% git log1
45c82b5... Merge branch 'header-fixes-for-linus'
<etc>
```
0

git config --global alias.log1 "log --pretty=oneline --abbrev-commit"

bartman · 2009-02-13 23:38:42 10
what the free memory grow or shink
This is sample output - yours may be different.
0

watch -d "free -mt"

srineer · 2009-02-18 14:46:54 8
this toggles mute on the Master channel of an alsa soundcard

I've had this as mute.sh in my ~/bin/ for some time.
This is sample output - yours may be different.
0

on="off"; off="on"; now=$(amixer get Master | tr -d '[]' | grep "Playback.*%" |head -n1 |awk '{print $7}'); amixer sset Master ${!now}

hans · 2009-02-25 09:03:08 8
Find all files <10MB and sum up their size

files
This is sample output - yours may be different.
0

i=0; for f in $(find ./ -size -10M -exec stat -c %s {} \; ); do i=$(($i + $f)); done; echo $i

dakira · 2010-01-08 15:47:35 3
Sniff ONLY POP3 authentication by intercepting the USER command

The command is useful for monitoring the use of the boxes and their connection IP. Result file "sniff" is readable with GUI program "wireshark" or through CLI with the command: tcpdump -f "sniff" -XX Show Sample Output
This is sample output - yours may be different.
```
USER username@maildomain.com
```
0

tcpdump -i eth0 "tcp port pop3 and ip[40] = 85 and ip[41] = 83" -s 1500 -n -w "sniff"

ironmarc · 2010-11-18 09:03:08 2
Convert a directory of pdfs into scaled down pngs

Using ghostscript instead of imagemagick to convert pdfs into pngs. It keeps pngs with pdfs
This is sample output - yours may be different.
0

shopt -s nullglob; for i in $(find "Your/file/system" -name "*.pdf"); do e="$(dirname $i)/$(basename $i '.pdf').png"; gs -sDEVICE=png16m -q -dPDFFitPage -g492x380 -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -dNOSUBSTDEVICECOLORS -o $e $i; done

unixmonkey15302 · 2010-12-17 13:30:54 5
Find .java files with high complexity (counting curly braces)
This is sample output - yours may be different.
0

find src/ -name "*.java" | while read f; do echo -n "$f "; cat "$f" | tr -dc '{}'; echo; done | awk '{ print length($2), $1 }' | sort -n

mindsocket · 2011-07-21 01:25:31 8
Create fortune's *.dat file from commandlinefu from saved preferite

Create fortune's *.dat file from commandlinefu from saved preferite script by suhasgupta (http://www.commandlinefu.com/commands/view/3681/backup-all-your-commandlinefu.com-favourites-to-a-plaintext-file) - Italian tutorial here: http://mrehqe.blogspot.com/2011/11/come-ottenere-un-commandlinefu-della.html
This is sample output - yours may be different.
0

sed ':a;N;$!ba;s/\n\n/\n%\n/g' input.txt >output

mrehqe · 2011-11-06 11:55:33 3
Nohup

After you execute a command (or shell script) in the background using &, if you logout from the session, the command will get killed. To avoid that, you should use nohup as shown below.
This is sample output - yours may be different.
0

nohup ./my-shell-script.sh &

ankush108 · 2012-06-26 19:43:42 74
Replace nelines with spaces
This is sample output - yours may be different.
0

sed -e :a -e '$!N;s/\n/ /;ta'

T4b · 2012-08-21 09:45:16 6
Pipe system log to espeak
This is sample output - yours may be different.
0

tail -f /var/log/messages.log | while read line ; do echo $line | cut -d \ -f5- | sed s/\\[[0-9]*\\]// | espeak ; done

asdfkajsdfh · 2012-10-27 23:00:53 4
Tar dir excluding tmp
This is sample output - yours may be different.
0

tar -zcvf <archive<.tar.gz --exclude /home/szimbaro/tmp /home/szimbaro

szimbaro · 2013-02-27 13:47:59 4
mount iso file
This is sample output - yours may be different.
0

mount -o loop centos.iso /nmt/dir

yangfeng724 · 2013-07-01 08:32:55 32
empty one file
This is sample output - yours may be different.
0

> filename.txt

hustlijian · 2013-12-06 09:12:00 16
Use wbinfo to output a table with basic user information from the default domain controller.

### for ADUSER in $(wbinfo -u --domain="$(wbinfo --own-domain)" | sort); do WBSEP=$(wbinfo --separator); ADUNAME=$(wbinfo -i "$ADUSER" | cut -d ":" -f5); UINFO=$(wbinfo -i "$ADUSER" | cut -d ":" -f3); GINFO=$(wbinfo -i "$ADUSER" | cut -d ":" -f4); SIDU=$(wbinfo -U "$UINFO"); SIDG=$(wbinfo -G "$GINFO"); USERID=$(wbinfo -s "$SIDU" | sed 's/.\{1\}$//' | cut -d "$WBSEP" -f2); GROUPID=$(wbinfo -s "$SIDG" | sed 's/.\{1\}$//' | cut -d "$WBSEP" -f2); echo -e "$ADUSER:$USERID:$ADUNAME:$GROUPID"; done | column -tx -s: ### Show Sample Output
This is sample output - yours may be different.
```
administrator     Administrator         Domain Admins
auditor           auditor               Domain Users
consultant1       Consultant 1          Domain Users
consultant2       Consultant 2          Domain Users
guest             Guest                 Domain Guests
krbtgt            krbtgt                Domain Users
scanmgr           scanmgr               Domain Admins
skillcheck        Skill Check           Domain Users
```
0

for DOMAIN in $(wbinfo -m); do WBSEP=$(wbinfo --separator); ADSERVER=$(wbinfo ... (Read description for full command)))

jaimerosario · 2014-06-13 21:03:23 8
alias that copies text into clipboard and clears clipboard after X seconds

This alias is useful if you need to use some text often. Executing the alias will copy the text into your clipboard and then remove it after X seconds. Show Sample Output
This is sample output - yours may be different.
```
No output
```
0

alias lp="echo -n \"some text to copy\" | pbcopy; sleep 120 && echo -n \"done\" | pbcopy &"

wsams · 2014-10-05 19:43:49 8
Resize and compress jpg images to another path with mogrify
This is sample output - yours may be different.
0

find /media/mmc/ -iname "*.JPG" -exec mogrify -quality 75 -resize '800x600' -path ~/Temp/ {} \;

chrisv · 2015-01-19 10:08:38 8
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Check if a domain is available and get the answer in just one line

Returns nothing if the domain exists and 'No match for domain.com' otherwise.

Do command when logged in from certain ips using ssh

Place in ~/.bashrc If you login to a ssh server from different ips, sometimes you want to do something specific for each. e.g., quickly go into screen -x session from a phone, but not your desktop.

find sparse files

Prints the path/filename and sparseness of any sparse files (files that use less actual space than their total size because the filesystem treats large blocks of 00 bytes efficiently).

silent/shh - shorthand to make commands really quiet

Sometimes I just want to run a command quietly but all that keyboard shifting makes my fingers hurt. This little function does the job eg.: $ if shh type less; then PAGER=less; fi

Force the script to be started as root

Will run the script as root and exit if the wrong or no password is given. Also will keep the parameters active if any where given.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

reverse order of file

Trojan inverse shell

To connect to the shell run: $ nc server.example.org 2000

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.

convert markdown to PDF

This is the one-line version of this htmldoc + markdown combo to convert markdown formatted text to PDF files to distribute to your non-savvy project managers. http://scottnesbitt.net/ubuntublog/?p=114

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