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Commands using head from sorted by
Terminal - Commands using head - 226 results
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
0
Up
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True Random Dice Roll
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echo $((0x$(head -c5 /dev/random|xxd -ps)%6+1))
2012-09-21 02:16:42
User: atoponce
Functions: echo head
Tags: password random /dev/random diceware
9
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True Random Dice Roll

/dev/random is said to by cryptographically secure, and unpredictable, as it gathers data from external sources, influenced by human timing interactions with computers, to fill the entropy pool. 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.

for i in {1..5}; do echo -n $((0x$(head -c5 /dev/random|xxd -ps)%6+1)); done; echo
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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
0
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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

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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
0
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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)

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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
4
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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
0
Up
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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
0
Up
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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
0
Up
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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
0
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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.

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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
6
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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
Up
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Get the IP address

Get the first IPv4 address of an interface

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systemctl --failed | head -n -6 | tail -n -1
2012-07-11 22:31:46
User: corpix
Functions: head tail
0
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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
0
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Show 10 6 characters pass and crypt(3) *if you like
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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
8
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Find biggest 10 files in current and subdirectories and sort by file size
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curl -s kernel.org | grep '<strong>' | head -3 | tail -1 | cut -d'>' -f3 | cut -d'<' -f1
2012-06-15 21:28:42
User: mdix
Functions: cut grep head tail
0
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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
0
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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.

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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
0
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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: khopesh
Functions: echo head set sleep
Tags: color screensaver Matrix Matrix Style
0
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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,
7
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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

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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
0
Up
Down
Count Number of Columns in TPC-H table-file (or any pipe seperated file
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sed -e 's/[;|][[:space:]]*/\n/g' .bash_history | cut --delimiter=' ' --fields=1 | sort | uniq --count | sort --numeric-sort --reverse | head --lines=20
2012-02-17 23:34:16
User: WissenForscher
Functions: cut head sed sort uniq
Tags: bash sort sed uniq
1
Up
Down
Top 20 commands in your bash history
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for i in $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10|awk '{print $1}');do diff -yw <(pidstat -p $i|grep -v Linux) <(ps -o euser,pri,psr,pmem,stat -p $i|tail);done
2012-02-16 20:54:32
User: bob_the_builder
Functions: awk diff grep head ps sort
0
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Displays user-defined ps output and pidstat output about the top CPU or MEMory users.

It grabs the PID's top resource users with $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10)

The sort -k is sorting by the third field which would be CPU. Change this to 2 and it will sort accordingly.

The rest of the command is just using diff to display the output of 2 commands side-by-side (-y flag) I chose some good ones for ps.

pidstat comes with the sysstat package(sar, mpstat, iostat, pidstat) so if you don't have it, you should.

I might should take off the timestamp... :|

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export GREP_COLOR='1;32';while [ true ]; do head -n 100 /dev/urandom; sleep .1; done | hexdump -C | grep --color=auto "ca fe"
2012-02-14 19:30:03
User: tbaschak
Functions: export grep head hexdump sleep true
2
Up
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pretend to be busy in office to enjoy a cup of coffee

combination of several of the above

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ls -t1 $* | head -1 ;
2012-02-10 22:13:24
User: darkhorse9933
Functions: head ls
Tags: alias directory files
0
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A bash function to show the files most recently modified in the named (or current) directory

Returns the most recently modified file in the current (or specified) directory. You can also get the oldest file, via:

ls -t1 $* | tail-1 ;

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TOTAL_RAM=`free | head -n 2 | tail -n 1 | awk '{ print $2 }'`; PROC_RSS=`ps axo rss,comm | grep [h]ttpd | awk '{ TOTAL += $1 } END { print TOTAL }'`; PROC_PCT=`echo "scale=4; ( $PROC_RSS/$TOTAL_RAM ) * 100" | bc`; echo "RAM Used by HTTP: $PROC_PCT%"
2012-02-03 16:10:36
User: 0disse0
Functions: awk echo grep head tail
Tags: memory usage process
0
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display memory usage of a process

page where I got inspiration:

http://www.commandlinefu.com/commands/view/5473/get-acurate-memory-usage-of-a-process-in-megabytes

and

http://www.commandlinefu.com/commands/view/10022/display-the-top-10-running-processes-sorted-by-memory-usage

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