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

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Functions

Terminal - Commands using head - 256 results

for k in `git branch -r|awk '{print $1}'`;do echo -e `git show --pretty=format:"%Cgreen%ci_%C(blue)%c r_%Cred%cn_%Creset" $k|head -n 1`$k;done|sort -r|awk -F"_" '{printf("%s %17s %-22s %s\n",$1,$2,$3,$4)}'

2012-10-29 12:38:24

User: varon

Functions: awk echo head sort

Tags: bash git perl grep branches

-1

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Show git branches by date - useful for showing active branches

simple table

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tr -dc '[:graph:]' </dev/urandom | head -c30; echo

2012-10-22 21:53:07

User: tox2ik

Functions: head tr

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generate a randome 3 character password

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head -c7 /dev/urandom|base64|tr -d '='

2012-10-17 14:47:11

User: Poulpatine

Functions: head tr

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generate a randome 10 character password

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tr -dc A-Za-z0-9_ < /dev/urandom | head -c 10 | xargs

2012-10-17 14:04:14

User: nottings

Functions: head tr

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generate a randome 10 character password

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ps axo %mem,pid,euser,cmd | sort -nr | head -n 10

2012-10-12 03:27:26

User: lainme

Functions: head ps sort

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Display the top ten running processes - sorted by memory usage

A nicer display from http://www.web-manual.net/linux-3/find-out-top-10-cpu-memory-consuming-processes/

echo $(</dev/urandom tr -dc 1-6 | head -c1)

2012-09-21 08:38:51

User: unixmonkey40000

Functions: echo head tr

Tags: password random /dev/random diceware

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True Random Dice Roll

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tr -cd '1-6' < /dev/urandom | head -c 1; echo

2012-09-21 02:16:42

User: atoponce

Functions: head tr

Tags: password random /dev/random diceware

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True Random Dice Roll

/dev/urandom is cryptographically secure, and indistinguishable from true random, as it gathers data from external sources, influenced by human timing interactions with computers, to fill the entropy pool, and hashes the input with SHA-1. As such, this is a quick way to do a "true random" fair-6 dice roll. Using this method, you could easily create passphrases with Diceware http://diceware.com.

Change the head(1) count to something other than 5 for more or less numbers.

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sudo -s du -sm /Users/* | sort -nr | head -n 10

2012-09-13 10:15:23

User: mematron

Functions: du head sort sudo

Tags: disk usage du users

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Find the 10 users that take up the most disk space

In OSX you would have to make sure that you "sudo -s" your way to happiness since it will give a few "Permission denied" errors before finally spitting out the results. In OSX the directory structure has to start with the "Users" Directory then it will recursively perform the operation.

Your Lord and master,

Mematron

du -sh /home/*|sort -rh|head -n 10

2012-09-12 11:54:06

User: toaster

Functions: du head sort

Tags: disk usage sort du users

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Find the 10 lusers winners of the "I take up the most disk space" award

the -h option of du and sort (on appropriate distrib) makes output "Human" readable and still sorted by "reversed size" (sort -rh)

du -sm /home/* | sort -nr | head -n 10

2012-09-11 13:09:22

User: dan

Functions: du head sort

Tags: disk usage du users

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Find the 10 users that take up the most disk space

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find . -type f | xargs -I% bash -c 'echo -e "\033[31m%\033[0m" && [[ ! `file %` =~ .*binary.* ]] && head "%"'

2012-08-28 12:52:38

User: mx4492

Functions: bash find head xargs

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Preview All Files in Directory

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wget --no-use-server-timestamps $(curl $(curl http://wallbase.cc/random/23/eqeq/1920x1080/0/100/20 | grep 'wallpaper/' | awk -F'"' '{print $2}' | head -n1) | grep -A4 bigwall | grep img | awk -F'"' '{print $2}'); feh --bg-center $(ls -1t | head -n1)

2012-08-14 22:06:27

User: yosh

Functions: awk grep head ls wget

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Random (sfw, 1920x1080) wallpaper from wallbase.cc

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vlc $(for f in /proc/$(pgrep -f libflashplayer.so |head -n 1)/fd/*; do ;if $(file ${f} |grep -q "broken symbolic link to \`/tmp/FlashXX"); then echo ${f};fi;done)

2012-08-07 08:04:56

User: rtaycher

Functions: echo file grep head

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Opens up cached flash plugin video files(linux)

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find . -type f -exec ls -shS {} + | head -10

2012-07-28 17:21:46

User: erichamion

Functions: find head ls

Tags: sort find GNU find file size

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Find biggest 10 files in current and subdirectories and sort by file size

This requires a version of GNU find that supports the -exec {} + action, but it seems more straightforward than the versions already posted.

for i in {1..10};do wget $(wget -O- -U "" "http://images.google.com/images?imgsz=xxlarge&hl=en&q=wallpaper+HD&start=$(($RANDOM%900+100))" --quiet | grep -oe 'http://[^"]*\.jpg' | head -1);done

2012-07-26 10:42:13

User: dzup

Functions: grep head wget

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download 10 random wallpapers from google

you may want &hl=en for &hl=es for the language

you may want imgsz=xxlarge for imgsz=large or whatever filter

you may want q=apples or whatever

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ip a s eth0 | grep "inet " | head -n 1 | awk '{print $2}' | cut -f1 -d'/'

2012-07-16 07:54:43

User: thelan

Functions: awk cut grep head

Tags: IP

-4

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Get the IP address

Get the first IPv4 address of an interface

systemctl --failed | head -n -6 | tail -n -1

2012-07-11 22:31:46

User: corpix

Functions: head tail

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Print failed units in systemd

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SEED=$(head -1 /dev/urandom|od -N 1);for i in {1..10};do tmp=$(mkpasswd ${RANDOM});pass=${tmp:2:6};echo Pass $pass Crypt: $(mkpasswd $pass);done

2012-07-07 03:20:46

User: dzup

Functions: echo head od

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Show 10 6 characters pass and crypt(3) *if you like

find . -type f -print0 | xargs -0 du -h | sort -hr | head -10

2012-06-30 10:03:31

User: netaxiz

Functions: du find head sort xargs

Tags: sort find file size

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Find biggest 10 files in current and subdirectories and sort by file size

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2012-06-15 21:28:42

User: mdix

Functions: cut grep head tail

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Get current stable kernel version string from kernel.org

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ps -e h -o pid --sort -pcpu | head -10 | vzpid -

2012-05-24 14:16:40

User: mrkmg

Functions: head ps

Tags: openvz

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See OpenVZ Container id's of top 10 running processes by %cpu

This command will list the PID, VEID, and Name of the 10 highest cpu using processes on a openvz host. You must have vzpid installed.

wget -O - http://www.reddit.com/r/wallpapers.rss | grep -Eo 'http://i.imgur.com[^&]+jpg' | head -1 | xargs wget -O background.jpg

2012-04-25 11:15:26

User: untitaker

Functions: grep head wget xargs

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set desktop background to highest-rated image from Reddit /r/wallpapers

Doesn't depend on curl and doesn't use thumbnails as wallpaper (which has the unfortunate effect of only allowing imgur links)

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(set -o noglob;while sleep 0.05;do for r in `grep -ao '[[:print:]]' /dev/urandom|head -$((COLUMNS/3))`;do [ $((RANDOM%6)) -le 1 ] && r=\ ;echo -ne "\e[$((RANDOM%7/-6+2));32m $r ";done;echo;done)

2012-04-13 02:09:10

User: adamhotep

Functions: echo head set sleep

Tags: color screensaver Matrix Matrix Style

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Matrix Style

A tweak using Patola's code as a base, this full-width green matrix display has all the frills (and all the printable characters).

You don't need the surrounding parens if you don't care about losing globbing capabilities. Z-shell (/bin/zsh) needs neither the parens nor the `set -o noglob`

Screen shot (animated): http://desmond.imageshack.us/Himg32/scaled.php?server=32&filename=matrixh.gif&res=landing

If it's too slow, try lowering the `sleep 0.05` or even replacing it with `true` (which is faster than `sleep 0`).

I squashed it as narrow as I could to conserve space, though somebody could probably squeeze a char or two out.

Enjoy!

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find . -type f -print0 | xargs -0 du -h | sort -hr | head -20

2012-03-30 10:21:12

User: flatcap

Functions: du find head sort xargs

Tags: sort find du xargs head,

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Recursively find top 20 largest files (> 1MB) sort human readable format

Search for files and list the 20 largest.

find . -type f

gives us a list of file, recursively, starting from here (.)

-print0 | xargs -0 du -h

separate the names of files with NULL characters, so we're not confused by spaces

then xargs run the du command to find their size (in human-readable form -- 64M not 64123456)

| sort -hr

use sort to arrange the list in size order. sort -h knows that 1M is bigger than 9K

| head -20

finally only select the top twenty out of the list

head -n1 nation.tbl | sed 's/$.$/\1\n/g' | sort | uniq -c | grep \| | awk '{ print $1 }'

2012-03-03 12:35:58

User: maarten

Functions: awk grep head sed sort uniq

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Count Number of Columns in TPC-H table-file (or any pipe seperated file

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