Commands using head sorted by votes

Commands using head (314)

sorted by

Display a numbered list of 50 biggets files sorted by size (human readable)

du -ah | sort -hr | head -n50 | cat -n

rgregor · 2013-10-01 10:16:13 6

Download current stable kernel version from kernel.org

Access www.kernel.org and download the last stable linux kernel release. Show Sample Output

wget --no-check-certificate https://www.kernel.org/$(wget -qO- --no-check-certificate https://www.kernel.org | grep tar | head -n1 | cut -d\" -f2)

glaudiston · 2013-11-07 18:46:14 8

Generate a random password.

Uses urandom and tr to generate a random password. Change the value of head -c## for the lenght of the password. Show Sample Output
This is sample output - yours may be different.
```
dWl2GEd7RE
```
0

echo $(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c10)

santizo · 2013-11-07 21:51:38 7
PHPUnit: Show the 5 slowest tests with their runtime
This is sample output - yours may be different.
0

phpunit --log-json php://stdout | awk '$NF ~ '/,/' && $1 ~ /"(test|time)"/' | cut -d: -f2- | sed "N;s/\n/--/" | sed "s/,//"| awk 'BEGIN{FS="--"}; {print $2 $1}' | sort -r | head -n 5

adri · 2014-01-24 12:50:02 6
grep BTC last trading price from BTC-E, but u can change it.. they got em all

Show Sample Output
This is sample output - yours may be different.
```
719.00
```
0

wget -q -O- http://bitinfocharts.com/markets/btc-e/btc-usd.html |grep -o -P 'lastTrade">([0-9]{1,})(.){0,1}[0-9]{0,}' |grep -o -P '(\d)+(\.){0,1}(\d)*' |head -n 1

peter1337 · 2014-01-25 23:40:00 20
16 Character Random Password

This snippet will produce an alpha-numeric 16 character password Show Sample Output
This is sample output - yours may be different.
```
sll_IBZS8dL4H8bQ
```
0

< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-16};echo;

opexxx · 2014-04-07 10:07:22 7
Return the one-liner google response for queries like "12*24" or "what time is it in the uk"
This is sample output - yours may be different.
0

google() { Q="$@"; GOOG_URL='https://www.google.com/search?q='; AGENT="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36" elinks -dump "${GOOG_URL}${Q//\ /+}" | grep "\*" | head -1 }

runvnc · 2014-04-17 07:37:25 5
最常使用的10个命令

最常使用的10个命令 Show Sample Output
This is sample output - yours may be different.
```
142 cd
    100 ll
     98 tail
     76 vi
     70 service
     53 ps
     52 dstat
     44 cat
     41 stat_peek.sh
     30 ifconfig
```
0

history |awk '{print $3}' |awk 'BEGIN {FS="|"} {print $1}'|sort|uniq -c |sort -rn |head -10

cypggs · 2014-04-20 06:40:56 7
Get a PostgreSQL servers version

-t, --tuples-only print rows only Show Sample Output
This is sample output - yours may be different.
```
 PostgreSQL 9.2.5 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.7.2 20121109 (Red Hat 4.7.2-8), 64-bit
```
0

psql -h <SERVER NAME HERE> -t -c 'SELECT version();' |head -1

hxre · 2014-04-25 08:26:23 8
Find directories in pwd, get disk usage, sort results
This is sample output - yours may be different.
0

du -a | sort -nr | head -10

compguy925 · 2014-06-10 13:00:27 8
Show an alphabetized list of all mcollective nodes
This is sample output - yours may be different.
0

mco ping | head -n -4 | awk '{print $1}' | sort

mrwulf · 2014-06-24 18:20:16 7
Parse logs for IP addresses and how many hits from each IP

Original command: cat "log" | grep "text to grep" | awk '{print $1}' | sort -n | uniq -c | sort -rn | head -n 100 This is a waste of multiple cats and greps, esp when awk is being used
This is sample output - yours may be different.
0

awk '/text to grep/{print $1}' "log" | sort -n | uniq -c | sort -rn | head -n 100

kln0thing · 2014-07-09 08:48:06 9
Parse logs for IP addresses and how many hits from each IP

Accepts multiple files via logs.... Substitute "text to grep" for your search string. If you want to alias this, you could do something like this: alias parse-logs='awk "/$1/{print \$1}" ${@[@]:1} | sort -n | uniq -c | sort -rn | head -n 100'
This is sample output - yours may be different.
0

awk '/text to grep/{print \$1}' logs... | sort -n | uniq -c | sort -rn | head -n 100

impinball · 2014-07-10 20:36:02 7
A random password generator
This is sample output - yours may be different.
0

tr -dc '\x15-\x7e' < /dev/urandom| head -c 16 | paste

jianingy · 2014-08-19 06:37:15 8
Random unsigned integer from /dev/random (0-65535)
This is sample output - yours may be different.
0

dd if=/dev/random count=1 bs=2 2>/dev/null | od -i | awk '{print $2}' | head -1

DarkIye · 2014-08-25 16:32:54 7

view the 10 most cpu using processes in browser

If you want to see your top ten cpu using processes from the browser (e.g. you don't want to ssh into your server all the time for checking system load) you can run this command and browse to the machines ip on port 8888. For example 192.168.0.100:8888 Show Sample Output

while true; do ps aux | sort -rk 3,3 | head -n 11 | cut -c -120 | netcat -l -p 8888 2>&1 >/dev/null; done &

manumiu · 2014-08-29 07:10:57 8

List open file descriptor count by PID

Useful for when you find the system runs out of file descriptors and you want to know why. Show Sample Output
This is sample output - yours may be different.
```
  32015 java
   2567 Passenger
   1630 ruby
   1470 rtorrent
   1316 ruby
   1014 ruby
    957 python2
    689 ruby
    510 deluged
    337 postgres
```
0

lsof | cut -f 1 -d ' ' | uniq -c | sort -rn | head -n 10

bobobo1618 · 2014-11-12 09:16:19 8
BIGGEST Files in a Directory

Way more easy to understand for naive user. Just returns the biggest file with size.
This is sample output - yours may be different.
0

find . -printf '%s %p\n'|sort -nr| head -1

ranjha · 2014-12-14 15:40:56 8
Incremental copy to remote host
This is sample output - yours may be different.
0

rsync -v --ignore-existing `ls | head -n 40` root@localhost:/location

zluyuer · 2014-12-16 04:08:59 8
BIGGEST Files in a Directory
This is sample output - yours may be different.
0

du -k . | sort -rn | head -11

b0wlninja · 2014-12-29 17:12:25 8
Generate a random alphanumeric string (works on Mac)
This is sample output - yours may be different.
0

cat /dev/urandom | strings | grep -o '[[:alnum:]]' | head -n 15 | tr -d '\n'; echo

rekky · 2015-01-31 23:07:23 8
Find the date of the first commit in a git repository

Finds the date of the first commit in a git repository branch Show Sample Output
This is sample output - yours may be different.
```
Wed Jun 25
```
0

git rev-list --all|tail -n1|xargs git show|grep -v diff|head -n1|cut -f1-3 -d' '

binaryten · 2015-02-04 19:35:18 13
Show first IPv4 address for an interface without CIDR mask

Given a network interface (eth0 in this example), find its ip address, without CIDR netmask. Show Sample Output
This is sample output - yours may be different.
```
localhost core # ip addr show dev eth0 | grep -E '\binet\b' | sed 's|.*inet $[^/]*$/.*|\1|' | head -n 1
192.168.128.197
```
0

ip addr show dev eth0 | grep -E '\binet\b' | sed 's|.*inet $[^/]*$/.*|\1|' | head -n 1

marksheahan · 2015-02-26 19:07:10 8
Find the next free user id in OS X

If you want to create new user accounts in OS X from the command line use this fragment to find the next free user id. In OS X CLI you have to assign the user id yourself Show Sample Output
This is sample output - yours may be different.
```
507
```
0

echo $((1+$( dscl . -list /Users UniqueID| awk '{print $2}' | sort -rn | head -1 )))

alecthegeek · 2015-04-04 01:39:46 9
Top 10 Memory Consuming Processes
This is sample output - yours may be different.
0

ps -auxf | sort -nr -k 4 | head -10

ajoshi83 · 2015-06-19 10:16:08 8
‹ First < 7 8 9 10 11 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Unencrypted voicechat

Sends the microphone input from PC1 to the speakers of PC2. Do the same in reverse to have an actual conversation ;) ... maybe with another port tough

Get debian package names corresponding to latex packages used in a document

Donwload media from *.rm from an url of type htttp://.../*.ram

The Chromium OS rootfs is mounted read-only. In developer mode you can disable the rootfs verification, enabling it to be modified.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Get the gravatar UTL for a given email address

list block devices

Shows all block devices in a tree with descruptions of what they are.

Change prompt to MS-DOS one (joke)

This one eliminates the additional backslash at the end (which is not necessary)

Shows cpu load in percent

This version is precise and requires one second to collect statistics. Check sample output for a more generic version and also a remote computer invocation variant. It doesn't work with the busybox version of the 'top' command but can be adjusted

sudo for entire line (including pipes and redirects)

USAGE: $ sudor your command This command uses a dirty hack with history, so be sure you not turned it off. WARNING! This command behavior differ from other commands. It more like text macro, so you shouldn't use it in subshells, non-interactive sessions, other functions/aliases and so on. You shouldn't pipe into sudor (any string that prefixes sudor will be removed), but if you really want, use this commands: $ proceed_sudo () { sudor_command="`HISTTIMEFORMAT=\"\" history 1 | sed -r -e 's/^.*?sudor//' -e 's/\"/\\\"/g'`" ; pre_sudor_command="`history 1 | cut -d ' ' -f 5- | sed -r -e 's/sudor.*$//' -e 's/\"/\\\"/g'`"; if [ -n "${pre_sudor_command/ */}" ] ; then eval "${pre_sudor_command%| *}" | sudo sh -c "$sudor_command"; else sudo sh -c "$sudor_command" ;fi ;}; alias sudor="proceed_sudo # "

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using head

Commands using head (314) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using head (314)

sorted by