Commands tagged awk sorted by votes

Commands tagged awk (348)

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Convert number of bytes to human readable filesize

Converts a number of bytes provided as input, to a human readable number. Show Sample Output
This is sample output - yours may be different.
```
$ human_filesize 1234567890
1.15 Gb
```
2

human_filesize() { awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '}

ArtBIT · 2011-12-02 18:21:20 3
Get the date for the last Saturday of a given month

If your locale has Monday as the first day of the week, like mine in the UK, change the two $7 into $6 Show Sample Output
This is sample output - yours may be different.
```
28
```
2

cal 04 2012 | awk '{ $7 && X=$7 } END { print X }'

flatcap · 2012-05-06 23:43:21 40
Count the number of pages of all PDFs in current directory and all subdirs, recursively
This is sample output - yours may be different.
2

find . -name "*.pdf" -exec pdftk {} dump_data output \; | grep NumberOfPages | awk '{s+=$2} END {print s}'

sucotronic · 2013-01-09 15:26:45 43
Don't like the cut command? Tired of typing awk '{print $xxx}', try this

Show Sample Output
This is sample output - yours may be different.
```
# ap () { awk '{print $'$1'}'; }
# echo hi there | ap 2
there
```
2

awp () { awk '{print $'$1'}'; }

joeheyming · 2014-08-15 16:21:49 9
drop first column of output by piping to this
This is sample output - yours may be different.
2

awk '{for(i=2;i<=NF;i++) printf("%s%s",$i,(i!=NF)?OFS:ORS)}'

snaguber · 2015-05-26 23:14:39 12
Monitor memory fine-grained usage (e.g. firefox)

Sometimes top/htop don't give the fine-grained detail on memory usage you might need. Sum up the exact memory types you want
This is sample output - yours may be different.
2

watch "awk '/Rss/{sum += \$2; } END{print sum, \"kB\"}' < /proc/$(pidof firefox)/smaps"

gumnos · 2015-09-19 00:36:34 18
Calculates the number of physical cores considering HyperThreading in AWK

Check whether hyperthreading is enabled or not. a better solution as nproc should work on all OS with awk Show Sample Output
This is sample output - yours may be different.
```
# example: 4xCPU 24xHT Cores
48
```
2

awk -F: '/^core id/ && !P[$2] { CORES++; P[$2]=1 }; /^physical id/ && !N[$2] { CPUs++; N[$2]=1 }; END { print CPUs*CORES }' /proc/cpuinfo

emphazer · 2018-05-14 14:17:33 162
Ultra fast public IP address lookup using Cloudflare's 1.1.1.1
This is sample output - yours may be different.
2

curl -fSs https://1.1.1.1/cdn-cgi/trace | awk -F= '/ip/ { print $2 }'

skhaz · 2019-09-05 19:31:25 247
Print nic name of current connection
This is sample output - yours may be different.
2

nmcli -g name,type connection show --active|awk -F: '/ethernet|wireless/ { print $1 }'

wuseman1 · 2022-09-22 20:16:21 662
urldecode with AWK

Fast and simple awk urldecoder! Note: Parameter -n is specific to GNU awk Show Sample Output
This is sample output - yours may be different.
```
echo -e  "asdf%2Fxx%2Cx\n%2F%2Cxx"  | awk -niord '{printf RT?$0chr("0x"substr(RT,2)):$0}' RS=%..
asdf/xx,x
/,xx
```
2

awk -niord '{printf RT?$0chr("0x"substr(RT,2)):$0}' RS=%..

emphazer · 2023-03-30 15:05:58 319
Display duplicated lines in a file

Displays the duplicated lines in a file and their occuring frequency.
This is sample output - yours may be different.
1

cat file.txt | sort | uniq -dc

Vadi · 2009-03-21 18:15:14 7
sync svn working copy and remote repository (auto adding new files)

Lists the local files that are not present in the remote repository (lines beginning with ?) and add them. Show Sample Output
This is sample output - yours may be different.
```
$ svn status | grep '^?'
?      INFO
?      src/svn-commit.tmp
?      src/game/Game.java
?      src/game/character/Hero.java

$ svn status | grep '^?' | awk '{ print $2; }' | xargs svn add
$ svn ci

A      INFO
A      src/svn-commit.tmp
A      src/game/Game.java
A      src/game/character/Hero.java
```
1

svn status | grep '^?' | awk '{ print $2; }' | xargs svn add

unixmonkey4200 · 2009-04-10 21:55:37 9
Uncompress a CSS file

Ever compress a file for the web by replacing all newline characters with nothing so it makes one nice big blob? It is a great idea, however what about when you want to edit that file? ...Serious pain in the butt. I ran into this today in that my only copy of a CSS file was "compressed" with no newlines. I whipped this up and it converted back into nice human readable CSS :-) It could be nicer, but it does the job.
This is sample output - yours may be different.
1

cat somefile.css | awk '{gsub(/{|}|;/,"&\n"); print}' >> uncompressed.css

lrvick · 2009-06-02 15:51:51 37
Puts every word from a file into a new line

Basically it creates a typical word list file from any normal text.
This is sample output - yours may be different.
1

awk '{c=split($0, s); for(n=1; n<=c; ++n) print s[n] }' INPUT_FILE > OUTPUT_FILE

agony · 2009-07-06 06:10:21 8
Remove newlines from output

?Cat and grep? You can use only grep ("grep \. filename"). Better option is awk.
This is sample output - yours may be different.
1

awk /./ filename

point_to_null · 2009-08-09 02:04:46 4
Sum columns from CSV column $COL

More of the same but with more elaborate perl-fu :-)
This is sample output - yours may be different.
1

perl -F',' -ane '$a += $F[3]; END { print $a }' test.csv

coffeeaddict_nl · 2009-08-11 15:08:58 3
Checks apache's access_log file, strips the search queries and shoves them up your e-mail

as unixmonkey7109 pointed out, first awk parse replaces three steps.
This is sample output - yours may be different.
1

awk '/q=/{print $11}' /var/log/httpd/access_log.4 | awk -F 'q=' '{print $2}' | sed 's/+/ /g;s/%22/"/g;s/q=//' | cut -d "&" -f 1

isma · 2009-11-22 17:13:48 69
random xkcd comic as xml
This is sample output - yours may be different.
1

curl -sL 'dynamic.xkcd.com/comic/random/' | awk -F\" '/^<img/{printf("<?xml version=\"1.0\"?>\n<xkcd>\n<item>\n <title>%s</title>\n <comment>%s</comment>\n <image>%s</image>\n</item>\n</xkcd>\n", $6, $4, $2)}'

putnamhill · 2009-12-09 15:02:32 4
ShadyURL via CLI
This is sample output - yours may be different.
1

SITE="www.google.com"; curl --silent "http://www.shadyurl.com/create.php?myUrl=$SITE&shorten=on" | awk -F\' '/is now/{print $6}'

allrightname · 2010-02-19 14:21:02 6
Extract title from HTML files

previous version leaves lots of blank lines
This is sample output - yours may be different.
1

awk 'BEGIN{IGNORECASE=1;FS="<title>|</title>";RS=EOF} {print $2}' | sed '/^$/d' > file.html

tamouse · 2010-04-20 13:27:47 4
Extract title from HTML files

not the best, uses 4 pipes!
This is sample output - yours may be different.
1

tr -d "\n\r" | grep -ioEm1 "<title[^>]*>[^<]*</title" | cut -f2 -d\> | cut -f1 -d\<

bandie91 · 2010-04-20 18:55:24 3
Count TCP States From Netstat

Counts TCP states from Netstat and displays in an ordered list. Show Sample Output
This is sample output - yours may be different.
```
9 ESTABLISHED
9 LISTEN
1 SYN_SENT
```
1

netstat -an | awk '/tcp/ {print $6}' | sort | uniq -c

Kered557 · 2010-05-06 17:04:37 4
Show DeviceMapper names for LVM Volumes (to disambiguate iostat logs, etc)

Emits the device names which will be printed by iostat for an LVM volume; doesn't show the names for the underlying devices when snapshots are being used (the -cow and -real devices in /dev/mapper) Show Sample Output
This is sample output - yours may be different.
```
dm-0 /dev/storage/root
dm-1 /dev/storage/swap_1
```
1

sudo lvdisplay |awk '/LV Name/{blockdev=$3} /Block device/{bdid=$3; sub("[0-9]*:","dm-",bdid); print bdid,blockdev;}'

unixmonkey10270 · 2010-06-10 11:50:31 3
Add all unversioned files to svn

No need for grep, let awk do the match. This will not behave properly if the filenames contains whitespace, which is awk's default field separator.
This is sample output - yours may be different.
1

svn st | awk '{if ($1 ~ "?") print $2}' | xargs svn add

sciurus · 2010-06-19 03:07:26 6
Edit a file in vim (at the first error) if it is not well formed xml.

Validate a file using xmllint. If there are parser errors, edit the file in vim at the line of the first error.
This is sample output - yours may be different.
1

vimlint(){ eval $(xmllint --noout "$1" 2>&1 | awk -F: '/parser error/{print "vim \""$1"\" +"$2; exit}'); }

putnamhill · 2010-06-23 15:55:02 3
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Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

See system users

Show local/public IP adresses with or without interface argument using a shell function for Linux and MacOsX

Like the tiltle said, you can use an argument too ( the interface ) $ MyIps eth0 will show only the IP of this interface and the public IP ( tested with Linux ) You can add that function in ~/.bashrc, then $ . ~/.bashrc Now you are ready to call this function in all your terms...

Install Linux Kernel Headers

change to the previous working directory

cpu info

Insert the last argument of the previous command

for example if you did a: $ ls -la /bin/ls then $ ls !$ is equivalent to doing a $ ls /bin/ls

Search and replace in multiple files recursively

Replace "foo" with "bar" in all files in current directory recursively

Is it a terminal?

Oddly, the isatty(3) glibc C call doesn't have a direct analogue as a command 'isatty(1)'. All is not lost as you can use test(1). For example, your script might be run from a tty or from a GUI menu item but it needs to get user-input or give feedback. Now your script can test STDIN with 'isatty 0' or STDOUT with 'isatty 1' and use xmessage(1) if the tty is not available. The other way to test for this is with 'tty -s' - but that's only for STDIN.

Getting Screen's Copy Buffer Into X's Copy Buffer (on Linux)

This command will let you just type c-a b (which means press 'ctrl' then 'a' then 'b'), and screen will save your copy buffer to /tmp/screen-exchange, and then execute xsel to copy the contents of that file into the system's X clipboard. 1. Install Conrad Parker's xsel from http://www.vergenet.net/~conrad/software/xsel/ 2. Add these lines to your .screenrc # Add cool line to make copying to x clipboard possible. # This binds C-a b to copy screen's copy buffer to the system clipboard. bind b eval writebuf 'exec /bin/sh -c "xsel -i -b < /tmp/screen-exchange"' 'exec /bin/sh -c "killall xsel"' 3. Restart screen. 4. Test it by typing c-a [ to enter copy mode. 5. Select some text using vi movement keys (h, j, k, l, etc...) and starting your selection by hitting the space bar, moving with vi movement keys, and then ending your selection with the space bar. 6. Type C-a b, and screen will use xsel to copy your screen copy buffer to the system's X clipboard buffer. 7. Then you can paste the screen copy buffer into any X program. Note: If you're using Mac OSX, you can use pbcopy instead of xsel. Also Note: The second exec in the .screenrc file, which runs killall on xsel, is necessary, because even when you redirect a file to xsel, xsel waits for you to press ctrl-c to kill it, and have it stop waiting for more input. Since xsel forces screen to wait, and I don't want to press ctrl-c, I send the equivalent of ctrl-c with killall causing xsel to write /tmp/screen-exchange to the X clipboard, and then exit. It's a hack, but it works. If you know how to get this to work without a lame hack leave a comment explaining how.

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Commands tagged awk (348)

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