Commands tagged awk | commandlinefu.com

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Terminal - Commands tagged awk - 265 results

MyVAR=86; awk -v n=$MyVAR '{print n}'

2011-04-14 17:56:00

User: putnamhill

Functions: awk

Tags: bash awk print

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BASH: Print shell variable into AWK

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MyVAR=85 awk '{ print ENVIRON["MyVAR"] }'

2011-04-14 16:46:23

User: depesz

Functions: awk

Tags: bash awk print

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BASH: Print shell variable into AWK

Alternatively:

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

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MyVAR=84; awk '{ print "'"$MyVAR"'" }'

2011-04-14 15:49:50

User: EBAH

Functions: awk

Tags: bash awk print

-3

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BASH: Print shell variable into AWK

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svn diff -r 1792:HEAD --summarize | awk '{if ($1 != "D") print $2}'| xargs -I {} tar rf incremental_release.tar {}

2011-04-05 15:00:49

User: windfold

Functions: awk diff tar xargs

Tags: bash svn awk xargs tar

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Create a tar of modified/added files since revision 1792.

The result of this command is a tar with all files that have been modified/added since revision 1792 until HEAD. This command is super useful for incremental releases.

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ps -C apache o pid= | sed 's/^/-p /' | xargs strace

2011-03-15 08:46:33

User: depesz

Functions: ps sed xargs

Tags: awk token ps strace tokenizer

-1

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easily strace all your apache processes

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ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace

This is sample output - yours may be different.

ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace
Process 7313 attached - interrupt to quit
Process 7395 attached - interrupt to quit
Process 7396 attached - interrupt to quit
Process 7397 attached - interrupt to quit
Process 7398 attached - interrupt to quit
Process 7399 attached - interrupt to quit
Process 7401 attached - interrupt to quit
Process 7403 attached - interrupt to quit
Process 7448 attached - interrupt to quit
Process 7468 attached - interrupt to quit
Process 7469 attached - interrupt to quit
attach: ptrace(PTRACE_ATTACH, ...): No such process
[pid  7313] select(0, NULL, NULL, NULL, {0, 48000} <unfinished ...>
[pid  7395] poll([{fd=11, events=POLLIN}, {fd=10, events=POLLIN}, {fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=7, events=POLLIN}, {fd=6, events=POLLIN}, {fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=85, events=POLLIN}, {fd=19, events=POLLIN}], 10, -1 <unfinished ...>
[pid  7396] semop(1572864, {{0, -1, SEM_UNDO}}, 1 <unfinished ...>
[pid  7397] semop(1572864, {{0, -1, SEM_UNDO}}, 1 <unfinished ...>
[pid  7398] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7399] semop(1572864, {{0, -1, SEM_UNDO}}, 1 <unfinished ...>
[pid  7401] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7403] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7448] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7468] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7469] poll([{fd=15, events=POLLIN}, {fd=19, events=POLLIN}], 2, -1 <unfinished ...>
[pid  7313] <... select resumed> )      = 0 (Timeout)
[pid  7313] gettimeofday({1300139401, 36665}, NULL) = 0
[pid  7313] waitpid(-1, 0xffdc0a68, WNOHANG|WSTOPPED) = 0
[pid  7313] select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
[pid  7313] gettimeofday({1300139402, 39688}, NULL) = 0
[pid  7313] waitpid(-1, 0xffdc0a68, WNOHANG|WSTOPPED) = 0
[pid  7313] select(0, NULL, NULL, NULL, {1, 0} <unfinished ...>
Process 7313 detached
Process 7395 detached
Process 7396 detached
Process 7397 detached
Process 7398 detached
Process 7399 detached
Process 7401 detached
Process 7403 detached
Process 7448 detached
Process 7468 detached
Process 7469 detached

2011-03-14 21:45:22

User: px

Functions: awk grep ps xargs

Tags: awk token ps tokenizer

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easily strace all your apache processes

This one-liner will use strace to attach to all of the currently running apache processes output and piped from the initial "ps auxw" command into some awk.

ls -1 | awk 'BEGIN{srand()} {x[NR] = $0} END{print "Selected", x[1 + int(rand() * NR)]}'

2011-03-13 20:05:06

User: saibbot

Functions: awk ls

Tags: awk random

-3

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Selecting a random file/folder of a folder

I use this command to select a random movie from my movie collection..

ls -alt /directory/ | awk '{ print $6 " " $7 " -- " $9 }'

2011-02-17 12:50:38

User: gamefiend

Functions: awk ls

Tags: awk pipe ls

-3

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Print last modified time in 'date -- file' format

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lsof | awk '/*:https?/{print $2}' | sort -u

2011-02-04 01:37:17

User: sugitaro

Functions: awk sort

Tags: sort awk lsof

-1

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pid list by httpd listen port

% lsof -v

lsof version information:

revision: 4.78

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awk ' { printf ("%s ", $0)} END {printf ("\n") } ' FILE

2011-02-02 11:51:41

User: bouktin

Functions: awk printf

Tags: awk

-1

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transform several lines in one with Awk

remove all carriage return of a given file (or input, if used with | ) and replace them with a space (or whatever character is after %s)

awk '{printf("/* %02d */ %s\n", NR,$0)}' inputfile > outputfile

2011-01-04 19:13:55

User: lucasrangit

Functions: awk

Tags: C Programming awk comment count

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Add line number count as C-style comments

I often find the need to number enumerations and other lists when programming. With this command, create a new file called 'inputfile' with the text you want to number. Paste the contents of 'outputfile' back into your source file and fix the tabbing if necessary. You can also change this to output hex numbering by changing the "%02d" to "%02x". If you need to start at 0 replace "NR" with "NR-1". I adapted this from http://osxdaily.com/2010/05/20/easily-add-line-numbers-to-a-text-file/.

{ if (/^[A-Za-z0-9]/) { interface=$1; next } else { if (/inet [Aa][d]*r/) { split($2,ip,":") } else { next } } print interface"\t: "ip[2] }

2010-12-14 15:38:25

User: gismo82

Tags: ifconfig awk

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Get your IP addresses

Shows the interface and the ip-address

awk 'BEGIN{RS="\0"}{gsub(/\n/,"<SOMETEXT>");print}' file.txt

2010-12-12 21:43:22

User: __

Functions: awk

Tags: Text Processing awk newline line

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Join lines

awk version of 7210. Slightly longer, but expanding it to catch blank lines is easier:

awk 'BEGIN{RS="\0"}{gsub(/\n+/,"<SOMETEXT>");print}' file.txt

aptitude remove $(dpkg -l|awk '/^ii linux-image-2/{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)}')

2010-12-11 11:38:15

User: __

Functions: awk sed

Tags: Debian Linux awk grep kernel dpkg aptitude

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Remove all unused kernels with apt-get

Note the double space: "...^ii␣␣linux-image-2..."

Like 5813, but fixes two bugs: [1]This leaves the meta-packages 'linux-headers-generic' and 'linux-image-generic' alone so that automatic upgrades work correctly in the future. [2]Kernels newer than the currently running one are left alone (this can happen if you didn't reboot after installing a new kernel).

I'm bummed that this took 228 characters. I'd like to see a simpler version.

gawk '{n=$1;a=0;b=1;c=1;for(i=1;i<n;i++){c=a+b;a=b;b=c};print c}' << eof

2010-11-26 08:36:30

User: unixmonkey13930

Functions: gawk

Tags: awk

-5

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Fibonacci numbers with awk

only take the first field on each row to compute the fibo on this number

tail -f file | awk '{now=strftime("%F %T%z\t");sub(/^/, now);print}'

2010-11-25 04:11:52

User: arcege

Functions: awk file tail

Tags: awk tail

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Monitor a file with tail with timestamps added

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awk 'func f(n){return(n<2?n:f(n-1)+f(n-2))}BEGIN{while(a<24){print f(a++)}}'

2010-11-24 10:40:08

User: unefunge

Functions: awk

Tags: awk

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Fibonacci numbers with awk

recursive version, "pure" AWK

awk -F, '{print $1" "$2" "$NF}' foo.txt

2010-11-12 15:53:13

User: putnamhill

Functions: awk

Tags: awk field separator

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AWK: Set Field Separator from command line

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awk 'BEGIN {FS=","} { print $1 " " $2 " " $NF}' foo.txt

2010-11-12 15:26:04

User: EBAH

Functions: awk

Tags: awk field separator

-1

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AWK: Set Field Separator from command line

Set field separator char from command line.

Prints first, second and lsat columns.

lynx -dump http://www.domain.com | awk '/http/{print $2}' | egrep "^https{0,1}"

2010-11-10 11:05:52

User: xutale

Functions: awk egrep

Tags: awk lynx

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Get all links of a website

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

2010-10-26 21:00:30

User: bertzijngedacht

Functions: awk sed

Tags: sed awk googlecl

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Create commands to download all of your Google docs

Create commands to download all of your Google docs to the current directory.

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

2010-10-26 08:35:41

User: bertzijngedacht

Functions: awk sed

Tags: sed awk googlecl

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Create commands to download all of your Picasaweb albums

Install Googlecl (http://code.google.com/p/googlecl/) and authenticate first.

find -regextype posix-egrep -regex ".*/[A-Z]{3}_201009[0-9]{2}.*" -printf "%f %s\n" | awk '{ SUM += $2;COUNT++ } END { print SUM/1024 " kb in " COUNT " files" }'

2010-09-21 15:41:45

User: taintedkernel

Functions: awk find

Tags: awk find

-1

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Sum up total size and count of all certain filename pattern/regex

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lynx -dump http://www.domain.com | awk '/http/{print $2}'

2010-09-04 12:48:19

User: putnamhill

Functions: awk

Tags: awk lynx

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Get all links of a website

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man $(/bin/ls /bin | awk '{ cmd[i++] = $0 } END { srand(); print cmd[int(rand()*length(cmd))]; }')

2010-08-20 17:31:02

User: emilsit

Functions: awk man

Tags: man awk

-4

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Display a random man page

Build an awk array with all commands and then select a random one at the end.

This avoids spawning extra processes for counting with wc or generating random numbers.

Explicitly call /bin/ls to avoid interactions with aliases.

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