All commands sorted by votes

All commands (14,187)

sorted by

Edit hosts file to remove "foo.novalocal" from it where foo is the hostname of a new VM

When booting a VM through OpenStack and managed through cloudinit, the hosts file gets to write a line simiar to 127.0.1.1 ns0.novalocal ns0 This command proven useful while installing a configuration manager such as Salt Stack (or Puppet, or Ansible) and getting node name
This is sample output - yours may be different.
0

sed -e "s/^127.0.1.1 $(hostname).novalocal/127.0.1.1/g" /etc/hosts

renoirb · 2014-09-25 15:38:43 12
Get the number of commits in a git repository

The command outputs the number of commits made to a git repository be leveraging the git-log git command and the wc command that ships with linux coreutil Show Sample Output
This is sample output - yours may be different.
```
200
```
0

git log --pretty=oneline | wc -l

lym · 2015-09-25 19:47:26 7
OS X application launcher with fuzzy search

Brings ups fzf with a list of Applications, then opens the selection. Requires fzf: https://github.com/junegunn/fzf
This is sample output - yours may be different.
0

find /Applications -name "*.app" -maxdepth 2 | fzf --exit-0 | open

ratberryjam · 2015-10-31 19:02:30 13
Shell to discover MTU using ping

Changelog: Changing ping to "ping -A -c1 -w10" - targeting a quick and reliable ping, even on slow networks.
This is sample output - yours may be different.
0

ADDR=127.0.0.1 ; for i in `seq 1300 1501`; do echo -ne "Pacote de tamanho $i bytes" ; ping -A -c1 -w10 -s $i -Mdo $ADDR 2>&1 > /dev/null || break ; echo -ne "\r\033[2K" ; done ; echo -ne "\r\033[2K" ; echo -e "MTU bem sucedido com `expr $i`"

pqatsi · 2015-12-18 18:11:47 11
Convert libreoffice files : .odt .odg and other to .pdf

Find and Convert all libre office files to PDF without libreoffice GUI Show Sample Output
This is sample output - yours may be different.
```
convert /home/foo/Documents/test.odt -> /home/foo/Documents/test.pdf using filter : writer_pdf_Export
```
0

find /home/foo/Documents/ -type f -iname "*.odt" -exec libreoffice --headless --convert-to pdf '{}' \;

switch · 2018-08-29 21:44:26 329
Get ethX mac addresses

Simple MAC adrress, thanks to ifconfig.
This is sample output - yours may be different.
0

ifconfig | awk '/HW/ {print $5}'

Cont3mpo · 2009-11-05 18:00:50 4
simple echo of IPv4 IP addresses assigned to a machine

ifconfig is dead, long-live iproute2 this also uses only awk to do the grepping and removal of CIDR notation Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1
10.3.0.43
```
0

ip addr | awk '/inet / {sub(/\/.*/, "", $2); print $2}'

markdrago · 2010-03-04 14:21:18 6
Reload an open file in emacs

If you have file opened in emacs and was just changed, the fastest way to reload the file is C-x C-v, as its default value is the path of the file.
This is sample output - yours may be different.
0

C-x C-v, Enter

unixmonkey9173 · 2010-04-04 16:06:34 3
Geolocate a given IP address

Grabs the ip2location site and removes everything but the span tag containing the country value. Place it inside your .bashrc or .bash_aliases file. Show Sample Output
This is sample output - yours may be different.
```
$ ip2loc 167.4.1.41
UNITED STATES
```
0

ip2loc() { wget -qO - www.ip2location.com/$1 | grep "<span id=\"dgLookup__ctl2_lblICountry\">" | sed 's/<[^>]*>//g; s/^[\t]*//; s/"/"/g; s/</</g; s/>/>/g; s/&/\&/g'; }

bkuri · 2010-10-13 00:19:35 4
Backup a file with a date-time stamp

even shorter (infix) version. Show Sample Output
This is sample output - yours may be different.
```
$ buf() { cp -v $1 ${1/${1%%.*}/$f-$(date +"%Y%m%d_%H%M%S")};}
$ buf a.txt
`a.txt' -> `a-20101215_131256.txt'
$ buf a.txt.gz
`a.txt.gz' -> `a-20101215_131305.txt.gz'
```
0

buf() { cp -v $1 ${1/${1%%.*}/$f-$(date +"%Y%m%d_%H%M%S")};}

unefunge · 2010-12-15 12:16:03 3
Run previous same command in history
This is sample output - yours may be different.
0

<comand> && !<command>

savageblood · 2011-06-07 12:37:40 4
delete the files from the given directory except the PDF file
This is sample output - yours may be different.
0

ls -1 $PATH*/* | xargs file | awk -F":" '!($2~/PDF document/){print $1}' |xargs rm -rf

karuppasamy · 2011-11-02 04:42:32 3

Check a port's state on a given host

Check to see if a port is open or closed on a given host. Show Sample Output

checkport() { sudo nmap -sS -p $1 $2 }

peterRepeater · 2011-12-13 11:46:15 7

space to underscore across single directory

and that was the only thing that worked for me.
This is sample output - yours may be different.
0

rename ' ' '_' *

toadsted · 2012-01-28 21:31:08 3
Get all links of a website
This is sample output - yours may be different.
0

lynx -dump http://www.domain.com | awk '/http/{print $2}' | egrep "^https{0,1}"

khaled_eng15 · 2012-04-23 10:41:02 3
detect partitions
This is sample output - yours may be different.
0

sudo file -bs /dev/sda | sed -e 's/.*partition 1$.*$ code offset.*/partition 1\1/g' -e 's/$.$;/\1\n/g'

jlaunay · 2012-08-17 12:54:05 5
List prime numbers from 2 to 100
This is sample output - yours may be different.
0

seq 2 100 | factor | sed '/ .* / d ; s/:.*//'

misof · 2012-10-25 15:19:35 4

investigates the network connection between the host and google public dns server

As mtr starts, it investigates the network connection between the host and google public dns server. Show Sample Output

mtr -t -o "LSD NBAW" 8.8.8.8

koppi · 2013-04-15 22:28:09 6

Replace all the spaces in all the filenames of the current directory and including directories with underscores.

The above command will also rename hidden files or dirs
This is sample output - yours may be different.
0

rename "s/ /_/g" * .*

jld · 2013-06-22 15:56:41 7
Opens an explorer.exe file browser window for the current working directory or specified dir (Fixed)

What's wrong with this? Show Sample Output
This is sample output - yours may be different.
```
[1] 4076
```
0

explorer . &

rmsh · 2014-06-08 10:16:04 8
Extract android adb backup to tar format (only works for non encrypted backups)

in case your openssl does not have zlib support: openssl:Error: 'zlib' is an invalid command.
This is sample output - yours may be different.
0

dd if=backup.ab bs=24 skip=1 | zlib-flate -uncompress > backup.tar

unixmonkey86504 · 2015-01-12 12:55:16 8
Get all shellcode on binary file from objdump
This is sample output - yours may be different.
0

echo "\"$(objdump -d BINARY | grep '[0-9a-f]:' | cut -d$'\t' -f2 | grep -v 'file' | tr -d " \n" | sed 's/../\\x&/g')\""

reiderroque · 2015-09-25 20:21:26 11
Find out the Firefox bookmarks that have "string" in their note (aka 'description')

1. First we get the `item_id` for that `comment`. Adapt the -C[N] parameter for your use. 2. Then we show the bookmark's `title` (or `url`). With that in your hand it's a matter of seconds to open Firefox's library and find the bookmark. Handy for eg. forensics or better sanitize of a place.sqlite before sharing it (on the cloud). It sure has room for improvement. Show Sample Output
This is sample output - yours may be different.
```
blablablabla
bleble string    ?-- string looked for
blobloblo|10611  ?-- item_id

Bookmark's title
```
0

sqlite3 -list places.sqlite 'SELECT item_id, content FROM moz_items_annos ;' | grep -A9 "string" ; sqlite3 places.sqlite 'SELECT title FROM moz_bookmarks WHERE .fk = <item_id number> ;'

datruche · 2015-10-31 19:32:52 13
Simple list of apache2 virtualhosts

Simply shows virtualhosts enabled, root access not needed (assuming apache2ctl is non-root executable).
This is sample output - yours may be different.
0

/usr/sbin/apache2ctl -S

lingo · 2009-07-21 10:52:49 4
Sort the current buffer in vi or vim.

the '!' command in vi spawns a shell, then pipes all of the specified lines in the buffer through the command specified after '!', replacing all input lines with the result of the command.
This is sample output - yours may be different.
0

:1,$!sort

bartonski · 2010-04-04 16:34:45 5
‹ First < 385 386 387 388 389 > 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

Parse compressed apache error log file and show top errors

credit shall fall to this for non-gzipped version: https://gist.github.com/marcanuy/a08d5f2d9c19ba621399

What is my ip?

Quickly generate an MD5 hash for a text string using OpenSSL

Thanks to OpenSSL, you can quickly and easily generate MD5 hashes for your passwords. Alternative (thanks to linuxrawkstar and atoponce): $ echo -n 'text to be encrypted' | md5sum - Note that the above method does not utlise OpenSSL.

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)

ShadyURL via CLI

kill all processes using a directory/file/etc

This command will kill all processes using a directory. It's quick and dirty. One may also use a -9 with kill in case regular kill doesn't work. This is useful if one needs to umount a directory.

Find the ratio between ram usage and swap usage.

it provides the ratio used for the RAM and The SWAP under Linux. When swappiness is high, Swap usage is high. When swappiness is low, Ram usage is high.

Salvage a borked terminal

This is more or less the same as 'reset', but with two advantages: the initial LF character makes sure you're starting a new line to the tty driver, the final one is more reliably a line-end as CR is often unset; and second, 'stty sane' is reliable on older UNIX systems, especially Berkeley-based ones.

View an info page on a nice interface

Nice interface for an info page.

Sort the current buffer in vi or vim.

vim 7 or higher has internal sort, too 'sort n' for numbers

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