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Terminal - Commands using head - 216 results

tr -dc 'A-Za-z0-9!@#$%^&*' < /dev/urandom | fold -w 12 | head -n 1

2013-03-15 13:20:32

User: opexxx

Functions: fold head tr

Up
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Generate password

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xxd -p /dev/urandom |fold -60|head -30|sed 's/$..$/\1 /g'

2013-02-19 22:18:52

User: psifertex

Functions: fold head sed

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generate 30 x 30 matrix

Replaces hexdump with the more succint xxd, and the sed was unnecessarily complex.

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hexdump -v -e '"%u"' </dev/urandom|fold -60|head -n 30|sed 's/$.\{2\}$/\1 /g'

2013-02-16 12:56:24

User: knoppix5

Functions: fold head hexdump sed

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generate 30 x 30 matrix

od /dev/urandom -w60 -An|sed 's/ ..../ /g'|head -n 30

(this one lacks digits 8 and 9)

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finger `whoami` | awk -F: '{ print $3 }' | head -n1 | sed 's/^ //'

2013-01-03 20:19:03

User: andrew_duffy

Functions: awk finger head sed

Up
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Get user's full name in Mac OS X

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48 function gbl() { git for-each-ref --sort=-committerdate --format='%(committerdate) %(authorname) %(refname)' refs/remotes/origin/|grep -e ".$@"|head -n 10; }

2012-12-13 23:35:06

User: soheil

Functions: grep head

Tags: git remote quick branch

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List Remote Git Branches By Author

Place in .bash_profile

du . | sort -nr | awk '{split("KB MB GB TB", arr); idx=1; while ( $1 > 1024 ) { $1/=1024; idx++} printf "%10.2f",$1; print " " arr[idx] "\t" $2}' | head -25

2012-12-03 02:59:13

User: agas

Functions: awk du head printf sort

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List the size (in human readable form) of all sub folders from the current location

Lists the size in human readable form and lists the top 25 biggest directories/files

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seq 10| shuf | head -1

2012-11-21 03:57:02

User: sandeepvreddy

Functions: head seq

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Generate random number with shuf

Above command will generate a random number between 1 to 10.

genpassdeep() { cat /dev/urandom | tr -dc [:alnum:] | head -c64 | whirlpooldeep; echo; }

2012-11-11 19:19:29

User: malathion

Functions: cat head tr

Tags: Security password sha256 /dev/urandom md5deep whirlpool

-2

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Create a secure password using /dev/urandom and whirlpool

/dev/urandom relies on operator input to set the random seed. By itself, this may not contain enough random bits to produce high entropy output, especially if the system was recently restarted. Therefore, key stretching through a hash reduces the risk of using low-entropy output as a security key.

cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 18 | head -1 | python -c "import sys,crypt; stdin=sys.stdin.readline().rstrip('\n'); print stdin;print crypt.crypt(stdin)"

2012-11-09 00:40:22

User: cnyg

Functions: cat fold head python tr

Tags: bash password python sha512

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Generate a 18 character password, print the password and sha512 salted hash

Generate a 18 character password from character set a-zA-Z0-9 from /dev/urandom, pipe the output to Python which prints the password on standard out and in crypt sha512 form.

genpassdeep() { cat /dev/urandom | tr -dc [:alnum:] | head -c64 | sha256deep; echo; }

2012-11-09 00:33:22

User: malathion

Functions: cat head tr

Tags: Security password sha256 /dev/urandom md5deep

-1

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Create a secure password using /dev/urandom and sha256

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

Up
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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

Up
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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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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

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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

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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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