Commands tagged awk sorted by votes

Commands tagged awk (348)

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Get the IP address

gives u each configured IP in a seperate line. Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1/8
10.28.66.71/24
```
3

ip -f inet a | awk '/inet / { print $2 }'

BorneBjoern · 2012-07-18 15:13:10 5
Remove all unused kernels with apt-get

Remove old kernels (*-generic and *-generic-pae) via apt-get on debian/ubuntu based systems. Tested on ubuntu 10.04 - 12.04.
This is sample output - yours may be different.
3

sudo apt-get remove $(dpkg -l|awk '/^ii linux-image-/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic*//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic*\nlinux-image-%s-generic*\n",$0,$0,$0)}')

mtron · 2012-08-15 10:02:12 6
Extract shortcuts and hostnames from .ssh/config

Spits out table that shows your Host->HostName aliases in ~/.ssh/config
This is sample output - yours may be different.
3

awk '$1=="Host"{$1="";H=substr($0,2)};$1=="HostName"{print H,"$",$2}' ~/.ssh/config | column -s '$' -t

wejn · 2014-05-24 20:51:47 7
Displays the number of processes per state
This is sample output - yours may be different.
3

while true; do clear;awk '{a[$3]+=1};END{for(x in a){print x,a[x]}}' /proc/[0-9]*/stat; sleep 1; done

wejn · 2014-05-24 21:04:41 8
Print the IPv4 address of a given interface
This is sample output - yours may be different.
3

ip a s eth0 | awk -F'[/ ]+' '/inet[^6]/{print $3}'

wejn · 2014-10-13 18:33:38 9
easily strace all your apache processes

Will open strace on all apache process, on systems using sbin/apache (debian) or sbin/httpd (redhat), and will follow threads newly created.
This is sample output - yours may be different.
3

ps auxw | grep -E 'sbin/(apache|httpd)' | awk '{print"-p " $2}' | xargs strace -F

gormux · 2016-08-04 10:59:58 14
Grab the first 3 octets of your ip addresses

For machines that have many ip blocks spanning different Class C's, this will show which ones. Show Sample Output
This is sample output - yours may be different.
```
chris@golf:~$ ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'
192.68.34
192.42.21
192.91.43
```
3

ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'

chrismccoy · 2016-09-01 14:02:43 16
Calculate the distance between two geographic coordinates points (latitude longitude)

The Haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes. Show Sample Output
This is sample output - yours may be different.
```
# input (format: latitude1 longitude1 latitude2 longitude2) :

h -22.9077611 -43.1259322 -22.9121089 -43.2301558

# output:
10.6889

# So, the distance between -22.9077611 (latitude),-43.1259322 (longitude) and -22.9121089,-43.2301558 (latitude,longitude) is 10,688.9 meters (10.6889 kilometers)
```
3

h(){ echo $@|awk '{d($1,$2,$3,$4);} function d(x,y,x2,y2,a,c,dx,dy){dx=r(x2-x);dy=r(y2-y);x=r(x);x2=r(x2);a=(sin(dx/2))^2+cos(x)*cos(x2)*(sin(dy/2))^2;c=2*atan2(sqrt(a),sqrt(1-a)); printf("%.4f",6372.8*c);} function r(g){return g*(3.1415926/180.);}';}

mikhail · 2019-04-04 01:34:36 38
This command provides more color variety for the rainbow-like appearance by generating random color codes from 16 to 231 for adb logcat.
This is sample output - yours may be different.
3

adb logcat|awk '{ i srand();for (i = 1; i <= NF; i++) { color = int(rand() * 216) + 16; printf "\033[38;5;%dm%s\033[0m ", color, $i;} printf "\n"; }'

wuseman1 · 2023-05-30 16:48:17 326
Averaging columns of numbers

This example calculates the averages of column one and column two of "file.dat". It can be easily modified if other columns are to be averaged.
This is sample output - yours may be different.
2

awk '{sum1+=$1; sum2+=$2} END {print sum1/NR, sum2/NR}' file.dat

kaan · 2009-03-24 21:22:14 6
Quick plotting of a function

The arguments of "seq" indicate the starting value, step size, and the end value of the x-range. "awk" outputs (x, f(x)) pairs and pipes them to "graph", which is part of the "plotutils" package.
This is sample output - yours may be different.
2

seq 0 0.1 20 | awk '{print $1, cos(0.5*$1)*sin(5*$1)}' | graph -T X

kaan · 2009-03-24 21:46:59 10
sorting file contents into individual files with awk

This command will sort the contents of FILENAME by redirecting the output to individual .txt files in which 3rd column will be used for sorting. If FILENAME contents are as follows: foo foo A foo bar bar B bar lorem ipsum A lorem Then two files called A.txt and B.txt will be created and their contents will be: A.txt foo foo A foo lorem ipsum A lorem and B.txt will be bar bar B bar
This is sample output - yours may be different.
2

awk '{print > $3".txt"}' FILENAME

alperyilmaz · 2009-03-31 15:14:13 6
fetch all revisions of a specific file in an SVN repository

exported files will get a .r23 extension (where 23 is the revision number)
This is sample output - yours may be different.
2

svn log fileName|cut -d" " -f 1|grep -e "^r[0-9]\{1,\}$"|awk {'sub(/^r/,"",$1);print "svn cat fileName@"$1" > /tmp/fileName.r"$1'}|sh

fizz · 2009-05-27 02:11:58 8
Convert numbers to SI notation

converts any number on the 'stdin' to SI notation. My version limits to 3 digits of precious (working with 10% resistors). Show Sample Output
This is sample output - yours may be different.
```
1
10
100
1k23
10k0
100k
1M00
24k5
4k54
2P35
0m34
0n35
```
2

$ awk '{ split(sprintf("%1.3e", $1), b, "e"); p = substr("yzafpnum_kMGTPEZY", (b[2]/3)+9, 1); o = sprintf("%f", b[1] * (10 ^ (b[2]%3))); gsub(/\./, p, o); print substr( gensub(/_[[:digit:]]*/, "", "g", o), 1, 4); }' < test.dat

mungewell · 2009-07-22 16:54:14 56
Grab an interface's IP from ifconfig without screen clutter

Sometimes, you don't really care about all the other information that ifconfig spits at you (however useful it may otherwise be). You just want an IP. This strips out all the crap and gives you exactly what you want. Show Sample Output
This is sample output - yours may be different.
```
eth1: 192.168.100.73
```
2

ifconfig eth1 | grep inet\ addr | awk '{print $2}' | cut -d: -f2 | sed s/^/eth1:\ /g

BoxingOctopus · 2009-11-03 19:26:40 10
Get your commandlinefu points (upvotes - downvotes)

This version prints current votes and commands for a user. Pass the user as an argument. While this technically "fits" as a one liner, it really is easier to look at as a shell script with extra whitespace. :) Show Sample Output
This is sample output - yours may be different.
```
  0  sed 's/.*/ /'
  0  date -s "`curl -sI www.example.com | sed -n 's/^Date: //p'`"
  0  jot -s '' -b '-' 50
  7  command | sed -n '1,/regex/p'
  4  curl -s search.twitter.com | awk -F'</?[^>]+>' '/\/intra\/trend\//{print $2}'
  5  dig +short -x {ip}
```
2

curl -s http://www.commandlinefu.com/commands/by/$1/xml | awk -F'</?div[^>]*>' '/class=\"command\"/{gsub(/"/,"\"",$2); gsub(/</,"<",$2); gsub(/>/,">",$2); gsub(/&/,"\\&",$2); cmd=$2} /class=\"num-votes\"/{printf("%3i %s\n", $2, cmd)}'

putnamhill · 2010-02-16 17:24:45 5
Grab a list of MP3s out of Firefox's cache

Grab a list of MP3s (with full path) out of Firefox's cache Ever gone to a site that has an MP3 embedded into a pesky flash player, but no download link? Well, this one-liner will yank the *full path* of those tunes straight out of FF's cache in a clean list. Shorter and Intuitive version of the command submitted by (TuxOtaku) Show Sample Output
This is sample output - yours may be different.
```
/home/sata/.mozilla/firefox/xmr8lfrq.default/Cache/FD44AC63d01
/home/sata/.mozilla/firefox/xmr8lfrq.default/Cache/C4C20071d01
/home/sata/.mozilla/firefox/xmr8lfrq.default/Cache/CD40802Cd01
```
2

find ~/.mozilla/firefox/*/Cache -exec file {} \; | awk -F ': ' 'tolower($2)~/mpeg/{print $1}'

sata · 2010-04-19 06:59:55 3
Length of longest line of code

Here's an awk version.
This is sample output - yours may be different.
2

awk '(length>t) {t=length} END {print t}' *.cpp

putnamhill · 2010-05-11 20:51:55 6
Echo the latest commands from commandlinefu on the console

A Quick variation to the latest commands list with the new-lines skipped. This is faster to read.
This is sample output - yours may be different.
2

wget -O - http://www.commandlinefu.com/commands/browse/rss 2>/dev/null | awk '/\s*<title/ {z=match($0, /CDATA\[([^\]]*)\]/, b);print b[1]} /\s*<description/ {c=match($0, /code>(.*)<\/code>/, d);print d[1]} ' | grep -v "^$"

nikunj · 2010-06-29 16:22:03 36
Find the annual salary of any White House staffer.

Query the Socrata Open Data API being used by the White House to find any employee's salary using curl, grep and awk. Change the value of the search parameter (example uses Axelrod) to the name of any White House staffer to see their annual salary. Show Sample Output
This is sample output - yours may be different.
```
"172200.00"
```
2

curl -s "http://www.socrata.com/api/views/vedg-c5sb/rows.json?search=Axelrod" | grep "data\" :" | awk '{ print $17 }'

mheadd · 2010-07-01 23:54:54 6
give me back my sound card

for when a program is hogging the sound output. finds, and kills. add -9 to the end for wedged processes. add in 'grep ^program' after lsof to filter. Show Sample Output
This is sample output - yours may be different.
```
$
```
2

lsof /dev/snd/pcm*p /dev/dsp | awk ' { print $2 }' | xargs kill

alustenberg · 2010-07-23 20:24:16 6
Create commands to download all of your Picasaweb albums

Create commands to download all of your Picasaweb albums Install Googlecl (http://code.google.com/p/googlecl/) and authenticate first. Show Sample Output
This is sample output - yours may be different.
```
google picasa get "Album 1" .
google picasa get "Album number 2" .
google picasa get "You get thepoint" .
google picasa get "Blabla" .
```
2

google picasa list-albums |awk 'BEGIN { FS = "," }; {print "\""$1"\""}'|sed s/^/google\ picasa\ get\ /|awk ' {print $0,"."}'

bertzijngedacht · 2010-10-26 08:35:41 8
Check to make sure the whois nameservers match the nameserver records from the nameservers themselves

Change the $domain variable to whichever domain you wish to query. Works with the majority of whois info; for some that won't, you may have to compromise: domain=google.com; for a in $(whois $domain | grep "Domain servers in listed order:" --after 3 | grep -v "Domain servers in listed order:"); do echo ">>> Nameservers for $domain from $a Note that this doesn't work as well as the first one; if they have more than 3 nameservers, it won't hit them all. As the summary states, this can be useful for making sure the whois nameservers for a domain match the nameserver records (NS records) from the nameservers themselves. Show Sample Output
This is sample output - yours may be different.
```
>>> Nameservers for google.com from NS1.GOOGLE.COM <<<
ns3.google.com.
ns1.google.com.
ns4.google.com.
ns2.google.com.

>>> Nameservers for google.com from NS2.GOOGLE.COM <<<
ns3.google.com.
ns4.google.com.
ns2.google.com.
ns1.google.com.

>>> Nameservers for google.com from NS3.GOOGLE.COM <<<
ns1.google.com.
ns4.google.com.
ns2.google.com.
ns3.google.com.

>>> Nameservers for google.com from NS4.GOOGLE.COM <<<
ns2.google.com.
ns3.google.com.
ns1.google.com.
ns4.google.com.
```
2

domain=google.com; for ns in $(whois $domain | awk -F: '/Name Server/{print $2}'); do echo ">>> Nameservers for $domain from $a <<<"; dig @$ns $domain ns +short; echo; done;

laebshade · 2011-05-08 04:46:34 4
Generate an XKCD #936 style 4 word password

The improvement of this command over Strawp's original alternative is that you can specify the size of the words, in this particular case words between 3 and 5 character's long. It also excludes words that contain apostrophes, if you'd rather keep those words simply substitue [^'] for . Show Sample Output
This is sample output - yours may be different.
```
potty Aspen seedy curt
```
2

echo $(grep "^[^']\{3,5\}$" /usr/share/dict/words|shuf -n4)

j_melis · 2011-08-23 21:15:18 6
Extract all 404 errors from your apache accesslog (prefix lines by occurrences number)
This is sample output - yours may be different.
2

grep "HTTP/1.1\" 404" access_log | awk '{print $7 } ' | sort | uniq -c | sort -n

Koobiac · 2011-08-25 12:01:14 3
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List commands with a short summary

Obviously, you can replace 'man' command with any command in this command line to do useful things. I just want to mention that there is a way to list all the commands which you can execute directly without giving fullpath. Normally all important commands will be placed in your PATH directories. This commandline uses that variable to get commands. Works in Ubuntu, will work in all 'manpage' configured *nix systems.

Print the current time on the whole screen, updated every second

http://www.joachim-breitner.de/projects#screen-message now also supports reading stdin continuously to update what it shows, different ?slides? separated by a form feed character. Here, we feed the current time into it each second to create a large clock.

(DEBIAN-BASED DISTROS) Find total installed size of packages given a search term

Replace \-dev with whatever you wanna search for

Live filter a log file using grep and show x# of lines above and below

"Pretty print" $PATH, show directories in $PATH, one per line with replacement pattern using shell parameter expansion

Can be used to create path alias. From: https://www.cyberciti.biz/tips/bash-aliases-mac-centos-linux-unix.html. #9

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Restrict the use of dmesg for current user/session

Linux offers an interesting option to restrict the use of dmesg. It is available via /proc/sys/kernel/dmesg_restrict. You can check the status with: $ cat /proc/sys/kernel/dmesg_restrict Alternatively you can use sysctl: $ sudo sysctl -w kernel.dmesg_restrict=1 To make your change persistent across reboot, edit a fille in /etc/sysctl.d/.

Remount an already-mounted filesystem without unmounting it

Necessary for fsck for example. The remount functionality follows the standard way how the mount command works with options from fstab. It means the mount command doesn't read fstab (or mtab) only when a device and dir are fully specified. After this call all old mount options are replaced and arbitrary stuff from fstab is ignored, except the loop= option which is internally generated and maintained by the mount command. It does not change device or mount point.

Attach screen over ssh

Directly attach a remote screen session (saves a useless parent bash process)

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Commands tagged awk (348)

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