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May 19, 2015 - A Look At The New Commandlinefu
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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

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Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

All commands from sorted by
Terminal - All commands - 12,353 results
adb shell "screencap -p | base64" | sed 's/\r$//' | base64 -d | display
2016-02-07 18:46:35
User: T4b
Functions: sed
4

Dependencies on phone: adb access, screencap command, base64 command.

Dependencies on computer: adb, sed, base64, display (from imagemagick, but can substitute other image viewer which reads from stdin).

This should work around adb stupidies (i.e. that it replaces \n with \r\n) with base64.

sudo system-image-cli --switch ubuntu-touch/rc-proposed/ubuntu --build 0
2016-02-07 18:24:28
User: bugmenot
Functions: sudo
Tags: ubuntu-phone
0

Get the latest and hopefully greatest to test out on the Ubuntu Phone - sometimes broken but always interesting. https://developer.ubuntu.com/en/start/ubuntu-for-devices/image-channels/

sudo mount -o remount,rw /
2016-02-07 17:57:19
User: bugmenot
Functions: mount sudo
0

Warning this will allow you to write to the system image on the phone, not recommended. But sometimes useful.

gsettings reset com.canonical.Unity.Dash favorite-scopes
2016-02-07 17:50:19
User: bugmenot
Functions: reset
0

To fix this bug: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1389698

fortune | cowsay -f sodomized-sheep
wget https://open.uappexplorer.com/api/download/openstore.mzanetti/openstore.mzanetti_*_armhf.click && pkcon install-local --allow-untrusted openstore.mzanetti_*_armhf.click
2016-02-04 14:24:46
User: bugmenot
Functions: wget
1

This will download and install the latest version of the open store on the ubuntu phone, this store includes unconfined applications such as the TweakGeek and the Ubuntu Touch Tweak Tool. You can see the install instructions from here: https://open.uappexplorer.com/docs#install

ssh-keygen -b 4048 -t rsa -C "comment"
2016-02-03 09:37:39
User: erez83
Functions: ssh ssh-keygen
Tags: ssh centos
0

Generating ssh key

then need to copy public key in to /root/.ssh/authorized_keys

$if [[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]]; then <command when up>; else <command when down>; fi;
2016-02-02 13:06:51
User: paulera
0

This command telnet and and looks for a line starting with "SSH" - works for OpenSSH since the SSH banner is something like "SSH-2.0-OpenSSH_6.0p1 Debian-4+deb7u3". Then it triggers an action accordingly.

It can be packed as a script file to echo 0/1 indicating the SSH service availability:

if [[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]]; then echo 1; else echo 0; fi;

Alternative uses:

Trigger an action when server is UP (using &&):

[[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]] && <command when up>

Trigger an action when server is DOWN (using ||):

[[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]] || <command when down>
tcpdump -nqt -s 0 -A -i eth0 port 5060
ip=$(curl ip.pla1.net)
sudo strace -e trace=network -p `pidof nginx | sed -e 's/ /,/g'`
2016-01-28 18:48:16
Functions: sed strace sudo
1

Nginx (and other webservers like Apache) can be awkward to trace. They run as root, then switch to another user once they're ready to serve web pages. They also have a "master" process and multiple worker processes.

The given command finds the process IDs of all Nginx processes, joins them together with a comma, then traces all of them at once with "sudo strace." System trace output can be overwhelming, so we only capture "networking" output.

TIP: to kill this complex strace, do "sudo killall strace".

Compare with a similar command: http://www.commandlinefu.com/commands/view/11918/easily-strace-all-your-apache-processes

pacman -Ss python | paste - - | grep --color=always -e '/python' | less -R
2016-01-25 14:29:31
User: hute37
Functions: grep less paste python
Tags: less paste pacman
1

Alternative1 (grep support):

pacman -Ss python | paste - - | grep --color=always -e '/python' | less -R

Alternative2 (eye-candy, no grep):

pacman --color=always -Ss "python" | paste - - | less -R

in ~/.bashrc:

pkg-grep() { pacman -Ss "$1" | paste - - | grep --color=always -e "${2:-$1}" | less -R ; }

pkg-search() { pacman --color=always -Ss "python" | paste - - | less -R; }

ps -eo pmem,comm | grep chrome | cut -d " " -f 2 | paste -sd+ | bc
echo one 22 three | awk -F'[0-9][0-9]' '{print $2}'
get_iplayer --type=radio --channel "Radio 4 Extra" | grep : | awk '{ if ( NR > 1 ) { print } }'|sed 's/:.*//' |sed '$ d' > pidlist && while read p; do get_iplayer --get --fields=pid $p; done <pidlist && rm pidlist
2016-01-16 17:20:54
User: dunryc
Functions: awk grep read rm sed
0

use get_iplay to download all listed content from http://www.bbc.co.uk/radio4extra run every night to make sure no episodes are missed

openssl enc -d -aes-256-cbc -a -in bitcoin-wallet-backup -out bitcoin-wallet-backup-decrypted
stat -f '%Su' /dev/console
declare -a array=($(tail -n +2 /proc/net/tcp | cut -d":" -f"3"|cut -d" " -f"1")) && for port in ${array[@]}; do echo $((0x$port)); done
ffmpeg -loop 1 -i image.jpg -i audio.m4a -c:v libx264 -c:a aac -strict experimental -b:a 192k -vf scale=720:-1 -shortest video-output.mp4
[email protected]; tar -cf - /path/to/dir | pv | nc -l -p 6666 -q 5; [email protected]; nc 192.168.1.100 6666 | pv | tar -xf -
sajb {$ip="192.168.100.1";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+(date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}}
0

IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type

powershell

Uses sajb to start a PowerShell background job that pings an IP host every 10 seconds.

Any changes in the host's Up/Down state is time-stamped and logged to a file.

Date/time stamps are logged in two formats: Unix and human-readable.

A while(1) loop repeats the test every 10 seconds by using the sleep command.

See the Sample Output for more detail.

I use this command to log Up/Down events of my Motorola SB6141 cable modem (192.168.100.1).

To end the logging, close the PowerShell window or use the "exit" command.

while(1){while((date -f ss)%10-gt0){sleep -m 300} echo "$(date -u %s) $((curl 192.168.100.1/cmSignalData.htm).parsedhtml.body.childnodes.item(1).firstchild.firstchild.childnodes.item(5).outertext|%{$_ -replace '\D+\n',''})">>modemlog.txt;sleep 1;echo .}
2015-12-24 02:12:10
User: omap7777
Functions: date echo sleep
0

IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type

powershell

Create a log file of your Motorola Surfboard SB6141 downstream signal strengths.

Uses the built-in curl to request signal strength data from your SB6141 cable modem.

HTML page 192.168.100.1/cmSignalData.htm has the signal strength numbers for the 8 downstreams.

Some HTML/DOM processing parses out the 8 values from the above page.

The eight extracted signal strengths are then logged to a file.

A small while-loop watches the clock & repeats the process every 10 seconds.

rsync -a --progress -e 'ssh -p 2200 -i .vagrant/machines/default/virtualbox/private_key' [email protected]:/vagrant/vm/old_timecapsule_backup /Volumes/2TB/
2015-12-17 15:28:12
User: brainstorm
Functions: rsync
1

That is, after running `vagrant ssh-config` to determine ports and ip's:

vagrant ssh-config

Host default

HostName 127.0.0.1

User vagrant

Port 2200

UserKnownHostsFile /dev/null

StrictHostKeyChecking no

PasswordAuthentication no

IdentityFile /Users/romanvg/tmp/.vagrant/machines/default/virtualbox/private_key

IdentitiesOnly yes

LogLevel FATAL

for f in `git status | grep new | awk '{print $3}'`; do git reset HEAD $f ; done
lc() { od="$1"; nd="$2"; of=$3; nf=$4; cp -rl "$od" "$nd"; find $nd -type f -iname \*$of -print -execdir ffmpeg -i {} -loglevel error -q:a 6 {}.$nf \; -execdir rm {} +; find $nd -type f -iname \*.$of.$nf -execdir rename "s/$of.$nf/$nf/" {} +; }
2015-12-16 20:16:01
User: snipertyler
Functions: cp find rename rm
0

Library Convert

Usage

lc Old_Directory New_DIrectory Old_Format New_Format

lc ~/Music ~/Music_ogg mp3 ogg

This will convert all files in the old directory to the new directory from the old format to the new format. It will leave the original library alone. The converted library will retain folder structure.