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May 19, 2015 - A Look At The New Commandlinefu: I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management: I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Top Tags

awk, bash, curl, find, grep, Linux, sed

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Functions

Terminal - All commands - 12,419 results

ftagmarks(){ jq -r --arg t "$1" '.children[] as $i|if $i.root == "tagsFolder" then ([$i.children[] as $j|{title: ($j.title), urls: [$j.children[].uri]}]) else empty end|.[] as $k|if ($k.title|contains($t)) then $k.urls else empty end|.[]?' "$2"; }

2016-12-24 15:12:04

User: qwertyroot

Functions: as

Tags: firefox bookmarks function json parsing jq

Up
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Get/List firefox bookmarks by tag from json backup

# Usage: ftagmarks TAG BOOKMARKS.JSON

ftagmarks Bash ~/.mozilla/firefox/*.default/bookmarkbackups/bookmarks-*.json

Tag can be partial matching, e.g. input 'Bas' or 'ash' will match 'Bash' tag.

# Exact tag matching:

ftagmark(){ jq -r --arg t "$1" '.children[] as $i|if $i.root == "tagsFolder" then ([$i.children[] as $j|{title: ($j.title), urls: [$j.children[].uri]}]) else empty end|.[] as $k|if $k.title == $t then $k.urls else empty end|.[]?' "$2"; }

Usage: ftagmark TAG BOOKMARKS.JSON

# List all tags:

ftagmarkl(){ jq -r '.children[] as $i | if $i.root == "tagsFolder" then $i.children[].title else empty end' "$1"; }

Usage: ftagmarkl BOOKMARKS.JSON

# Requires: `jq` - must have CLI JSON processor

http://stedolan.github.io/jq

pv -tpreb /dev/sdc2 | dd of=/dev/sdb2 bs=64K conv=noerror,sync

2016-12-22 03:18:09

User: 4fthawaiian

Functions: dd

Tags: Linux dd pv progress

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copy one partition to another with progress

uses the wonderful 'pv' command to give a progress bar when copying one partition to another. Amazing for long running dd commands

sed 's/^$[^>.]$/#\1/;s/^>>> //;s/^\.\.\./ /'

2016-12-06 15:23:02

User: miniker84

Functions: sed

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Convert a Python interactive session to a python script

Used to copy and paste a terminal buffer of a python interactive session into an editor

zgrep 'pattern' /var/logs/apache2/access.log* | awk '{print $7}' | sort -n | uniq -c | sort -rn

2016-11-30 20:14:28

User: funkjedi

Functions: awk sort uniq zgrep

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Retrieve a download count for URLs in apache logs

Comments (17) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

ls -lart|lolcat -a

2016-11-18 02:45:39

User: knoppix5

Functions: ls

Up
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Slow down the screen output of a command

(example above is the 'ls' command with reduced output speed)

Comments (152) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

cat matching_files.txt | xargs sed -i '' "s/require('global-module')/require('..\/some-folder\/relative-module')/"

2016-11-17 03:26:09

User: Trindaz

Functions: cat sed xargs

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Basic sed usage with xargs to refactor a node.js depdendency

Comments (13) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

whatinstalled() { which "$@" | xargs -r readlink -f | xargs -r dpkg -S ;}

2016-11-08 20:59:25

User: pdxdoughnut

Functions: readlink which xargs

Tags: which grep dpkg function packages realpath

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Find the package that installed a command

Comments (27) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

whatinstalled () { local cmdpath=$(realpath -eP $(which -a $1 | grep -E "^/" | tail -n 1) 2>/dev/null) && [ -x "$cmdpath" ] && dpkg -S $cmdpath 2>/dev/null | grep -E ": $cmdpath\$" | cut -d ":" -f 1; }

2016-11-08 16:13:10

User: lordtoran

Functions: cut grep tail which

Tags: which grep dpkg function packages realpath

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Find the package that installed a command

Put this one-line function somewhere in your shell init, re-login and try

whatinstalled <command>

This is an elaborate wrapper around "dpkg -S", with numerous safeguards. Symlinks and command aliases are resolved. If the searched command is not an existing executable file or was installed by some other means than dpkg/apt, nothing is printed to stdout, otherwise the package name.

grep -Hrn "text" .

2016-11-05 08:03:39

User: zluyuer

Functions: grep

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Search some text from all files inside a directory

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for i in `pip list -o --format legacy|awk '{print $1}'` ; do pip install --upgrade $i; done

2016-11-03 22:05:21

User: bakhru

Functions: awk install

Tags: python pip

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Automatically update all the installed python packages

Comments (82) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

free && sync && echo 3 > /proc/sys/vm/drop_caches && free

2016-11-02 08:51:01

User: ironmarc

Functions: echo free sync

-2

Up
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Flush memory cache

Comments (16) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

grep -c ".*" filename

2016-10-26 22:32:23

User: zlemini

Functions: grep

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Count lines in a file with grep

Returns the number of lines in a file, emulates "wc -l" behavior with grep.

Comments (18) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

alias bman='man --html=x-www-browser'

2016-10-23 17:59:47

User: lordtoran

Functions: alias

Tags: man groff

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Open a manpage in the default (graphical) web browser

An easy alias for opening a manpage, nicely HTML formatted, in your set internet browser.

If you get a "command exited with status 3" error you need to install groff.

Comments (30) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

xmlstarlet ed -u '//food[calories="650"]/calories' -v "999" simple.xml

2016-10-05 18:29:01

User: zlemini

Functions: ed

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Replace the content of an XML element

Replaces "650" with "999" in simple.xml.

xml used - http://www.w3schools.com/xml/simple.xml

Comments (8) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

2016-10-04 16:53:29

User: TuxOtaku

Functions: id sed

Tags: sed users id

Up
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Pretty-print user/group info for a given user

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printf -vl "%${COLUMNS:-`tput cols 2>&-||echo 80`}s\n" && echo ${l// /-};

2016-09-25 10:37:20

User: AskApache

Functions: echo printf

Tags: bash echo function print line tput builtin askapache printf COLUMNS local

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Print a row of characters the width of terminal

Unlike other methods that use pipes and exec software like tr or sed or subshells, this is an extremely fast way to print a line and will always be able to detect the terminal width or else defaults to 80. It uses bash builtins for printf and echo and works with printf that supports the non-POSIX `-v` option to store result to var instead of printing to stdout.

Here it is in a function that lets you change the line character to use and the length with args, it also supports color escape sequences with the echo -e option.

function L() { local l=; builtin printf -vl "%${2:-${COLUMNS:-`tput cols 2>&-||echo 80`}}s\n" && echo -e "${l// /${1:-=}}"; }

With color:

L "`tput setaf 3`="

1. Use printf to store n space chars followed by a newline to an environment variable "l" where n is local environment variable from $COLUMNS if set, else it will use `tput cols` and if that fails it will default to 80.

2. If printf succeeds then echo `$l` that contains the chars, replacing all blank spaces with "-" (can be changed to anything you want).

From: http://www.askapache.com/linux/bash_profile-functions-advanced-shell.html http://www.askapache.com/linux/bash-power-prompt.html

aws cloudfront list-distributions | jq -r '.DistributionList | .Items | .[] | .Id + " " + .Aliases.Items[]'

2016-09-19 06:36:59

User: hendry

Tags: aws jq awscli

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List cloudfront distributions based on domain

Looking up the id of a CF domain can be painful. Not anymore with this tip.

pip freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U

2016-09-16 19:19:13

User: malathion

Functions: cut grep install xargs

Tags: python pip

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Automatically update all the installed python packages

Comments (17) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

find . -name '*.desktop' | sed s/[^/]*\.desktop$// | uniq -c | sort -g

2016-09-16 12:22:38

User: T4b

Functions: find sed sort uniq

Up
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Find where a kind of file is stored

In this case searches for where .desktop files are stored. The resulted is a sorted list of the top directories containing such files.

Xephyr -keybd ephyr,,,xkbmodel=evdev,xkblayout=it -listen tcp -ac -reset -output VGA1 :5

2016-09-12 15:59:07

User: hute37

Tags: X awesome Xephyr

Up
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Launch remote awesome session on Dual monitor

# from xfce session to avoid keyboard shortcut clashing

# start xephyr in VGA1 monitor:

Xephyr -keybd ephyr,,,xkbmodel=evdev,xkblayout=it -listen tcp -ac -reset -output VGA1 :5

# then start an xterm locally

export DISPLAY=:5.0

xterm

# and remote ssh (no X fw needed if local tcp with access disablesd (-tcp -ac) => UNSECURE!!!

ssh remote-host

export DISPLAY=notebook:5.0

xrdb -merge ~/.Xresources

xterm -geometry 132x50-0+0

# start awesome

dbus-launch $(which awesome)

dex -a -e Awesome

for y in {1..10}; do for x in {1..10}; do echo -n "| $x*$y=$((y*x)) "; done; echo; done|column -t

2016-09-07 12:31:18

User: lpalgarvio

Functions: column echo

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Multiplication table

The multiplication table for math study

find . -name \*.pyc -delete

2016-09-07 01:49:59

User: zluyuer

Functions: find

-4

Up
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Remove all pyc files

Comments (13) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

curl ipinfo.io

2016-09-04 08:23:25

User: MrTux

Up
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return external ip

Return IP information about your external ip address with JSON format

host -t srv _ldap._tcp | sed "s/.*[ ]$[^ ]*$[.]$/\1/g" | xargs -i ping -c 1 {} | grep -E "(statistics|avg)" | sed "s/^--- $[^ ]*$.*/,\1:/g"|tr -d "\n" | tr "," "\n" | sed "1d;s|^$[^:]*$.*=[^/]*/$[^/]*$.*|\2\t\1|g" |sort -n

2016-09-02 03:26:29

User: glaudiston

Functions: grep host ping sed sort tr xargs

Tags: ldap

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detect the fastest ldap server on a intranet

This command line detect ldap hosts, by mandatory dns entry, then ping them to detect response average. based on ping response average it sorts and print the faster server in first output line

ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'

2016-09-01 14:02:43

User: chrismccoy

Functions: awk ifconfig

Tags: ifconfig awk

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Grab the first 3 octets of your ip addresses

For machines that have many ip blocks spanning different Class C's, this will show which ones.

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