Commands using head sorted by votes

Commands using head (314)

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Find top 5 big files

Find top 5 big files
This is sample output - yours may be different.
-3

find . -type f -exec ls -s {} \; | sort -n -r | head -5

opexxx · 2013-03-19 12:16:24 5
Pick a random line from a file

prints a random line
This is sample output - yours may be different.
-4

head -$(($RANDOM % $(wc -l < file.txt) +1 )) file.txt | tail -1

sharfah · 2009-07-23 12:00:49 3
Pick a random line from a file
This is sample output - yours may be different.
-4

shuf file.txt | head -n 1

lxtips · 2009-07-24 04:22:10 4
Get Futurama quotations from slashdot.org servers
This is sample output - yours may be different.
-4

echo -e "HEAD / HTTP/1.1\nHost: slashdot.org\n\n" | nc slashdot.org 80 | head -n5 | tail -1 | cut -f2 -d-

beerbrain · 2009-07-31 06:49:52 3
find out public ip address by using any host that have 'efingerd -n'

This is useful when you got a reserved IP address like 192.168.0.100 and want to find out what IP address is used to access the Internet. You have to know a server with 'efingerd -n' configured, like www.linuxbanks.cn as above. Other method to find out this information are for example access www.tell-my-ip.com and grep the output. The finger method have the advantage that it is easy to deploy a service like www.tell-my-ip.com, as you only need to get efingerd installed.
This is sample output - yours may be different.
-4

finger @www.linuxbanks.cn | grep -oE '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}' | head -n1

zhangweiwu · 2010-05-05 14:58:55 5
Blue Matrix

Matrix Screen HPUX
This is sample output - yours may be different.
-4

while :; do integer i=0; COL=$((RANDOM%$(tput cols))); ROW=$((RANDOM%$(tput cols))); while (( i <= COL)) do tput cup $i $ROW; echo "\033[1;34m" $(cat /dev/urandom | head -1 | cut -c1-1) 2>/dev/null; i=$(expr $i + 1); done done

mfrancime · 2010-05-28 11:17:43 3
Get the IP address

Get the first IPv4 address of an interface Show Sample Output
This is sample output - yours may be different.
```
192.168.253.52
```
-4

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

thelan · 2012-07-16 07:54:43 3
Print just line 4 from a textfile
This is sample output - yours may be different.
-5

tail -n +4 | head -n 1

unixmonkey10745 · 2010-07-09 12:10:03 27
Go to the Nth line of file

Silly approach, but easy to remember... Show Sample Output
This is sample output - yours may be different.
```
tcpmux		1/tcp				# TCP port service multiplexer
```
-5

head -n 13 /etc/services | tail -n 1

muonIT · 2011-09-15 19:39:49 13
To print a specific line from a file

Tail is much faster than sed, awk because it doesn't check for regular expressions. Show Sample Output
This is sample output - yours may be different.
```
$ tail -n +5 /var/log/dmesg | head -n 1
[    0.000000] KERNEL supported cpus:
```
-5

tail -n +<N> <file> | head -n 1

qweqq · 2011-09-30 08:30:30 6
Print all the lines between 10 and 20 of a file
This is sample output - yours may be different.
-6

head -n 20 <filename> | tail

jamolkhon · 2010-11-15 13:08:12 4
Speak the last 3 tweets on Mac OS

You need curl.. and a Mac of course.
This is sample output - yours may be different.
-7

curl -s -u user:password http://twitter.com/statuses/friends_timeline.rss | grep title | sed -ne 's/<\/*title>//gp' | head -n 4 | say -v Bruce

sixtus · 2009-03-20 20:14:13 5
Print just line 4 from a textfile

tail -n X | head -n 1 prints a specific line, where X is the line number
This is sample output - yours may be different.
-7

tail -n 4 | head -n 1

puddy · 2010-07-08 19:50:06 3
Install and run when a command is not found

Work only with bash and apt-file installed. When it found an unknow command, it will search for a file named "scribus" (in my example), in a folder named bin and then install the corresponding package. After installation, it will run the command. Usefull juste after reinstalling linux and missing lot of package. Show Sample Output
This is sample output - yours may be different.
```
juluan@juluan-desktop ~ 21:56:04 [130] $ scribus
Lecture des listes de paquets... Fait
Construction de l'arbre des d?pendances       
Lecture des informations d'?tat... Fait
Les paquets suppl?mentaires suivants seront install?s?: 
  blt python-tk
Paquets sugg?r?s?:
  blt-demo tix python-tk-dbg scribus-template scribus-doc
Les NOUVEAUX paquets suivants seront install?s?:
  blt python-tk scribus
0 mis ? jour, 3 nouvellement install?s, 0 ? enlever et 3 non mis ? jour.
Il est n?cessaire de prendre 11,5Mo dans les archives.
Apr?s cette op?ration, 32,2Mo d'espace disque suppl?mentaires seront utilis?s.
Souhaitez-vous continuer [O/n]??
```
-7

function command_not_found_handle(){ apt-get install $( apt-file search "$1" | grep bin | grep -w "$1" | head -n1 | cut -d ':' -f 1 ) && $* ; }

Juluan · 2011-04-06 19:58:32 8
‹ First < 11 12 13

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Fix borked character coding in a tty.

Often you find some tty programs are messed up and confused about character encoding - 'man' is a common problem and sometimes displays weird characters for apostrophes, hyphens etc etc. Another class of programs that suffer from this are those that try to use the line drawing characters - eg RedHat's tty system admin functions such as system-config-firewall-tui system-config-network-tui etc. Adding 'LC_ALL=C' fixes most of these problems (as long as you want English! Perhaps speakers of other languages can add a comment here). For bonus points, I've added the '-c' option to the man command so that it ignores it's cache and re-computes the man page using the C locale.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Sum file sizes

Even simpler! Use du ... the -s and -c flags summarize and print a grand total of all files recursively. The -b flag prints in byte format. You can use the -h flag instead to print in human readable format.

grep across a git repo and open matching files in gedit

Upload images to omploader.org from the command line.

This function uploads images to http://omploader.org and then prints out the links to the file. Some coloring can also be added to the command with: $ompload() { curl -F file1=@"$1" http://omploader.org/upload|awk '/Info:|File:|Thumbnail:|BBCode:/{gsub(/

convert filenames in current directory to lowercase

The simplest way I know.

BASH: Print shell variable into AWK

Alternatively: export MyVAR=84; awk '{ print ENVIRON["MyVAR"] }'

Install an mpkg from the command line on OSX

Installing most OSX apps is just a matter of dropping it in /Applications, either GUI-wise or with cp -r. However, many packages are distributed in "mpkg" format, and those have to be installed with an installer. If you don't want to go to the trouble of firing up VNC to install an mpkg, you can use the "installer" command. This will install an application from a .mpkg it to /Applications system-wide. To install a program for just one user, replace "-target /" with "-target username".

Pull Total Memory Usage In Virtual Environment

This command basically adds up all of the individual instances processes and gives you a grand total for used memory in that instance alone.

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Commands using head (314)

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