Commands using awk sorted by votes

Commands using awk (1,418)

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all java -Xmx values in a system, add them up

process name , process id , xms( initial memory allocation pool) , xmx(maximum memory allocation pool) Show Sample Output
This is sample output - yours may be different.
```
solr 32603 -Xmx614 -Xmx614
root 42319 -Xmx60G -Xmx60G
solr 42320 -Xmx60G -Xmx60G
```
0

ps -ef | grep jav[a] | awk '{print substr($1,1),substr($2,1),substr($0,index($0,"-Xms"),7),substr($0,index($0,"-Xmx"),7)}'

illia · 2016-02-14 18:50:58 12
Remove all untagged docker images

Remove all untagged images
This is sample output - yours may be different.
0

docker rmi $(docker images | grep "^<none>" | awk "{print $3}")

vivek_saini07 · 2016-02-20 21:51:09 14
Reports file systems with disk usage exceeding 90% on the specified host
This is sample output - yours may be different.
0

function df_func { local dfts=$(ssh $1 "df -lP | tail -n +2 | sed 's/%//'"); echo $dfts | awk '$5 > 90 {exit 1}' > /dev/null; if [ $? == 1 ]; then echo -n "$1 "; echo $dfts | awk '$5 > 90 {printf "%s %d%%\n", $6, $5}'; fi }

wytten12 · 2016-03-30 19:57:39 10
Display the standard deviation of a column of numbers with awk

I was concerned that the other scripts didn't use the correct order of operations for the calculation. Variance needs to be squared before being summed, then divided by NR and then square rooted. Not sure if this method is correct but this is what I came up with. I think it works correctly but I'm not totally sure. If anyone could critique it that would be great.
This is sample output - yours may be different.
0

awk '{delta=$1; avg+=$1/NR;} END {print "stdev = " sqrt(((delta-avg)^2)/NR);}'

123nor · 2016-04-19 08:49:49 12
Finding commands to create alias for

by determining most popular use in history using percentage . Show Sample Output
This is sample output - yours may be different.
```
     1  187  25.7931%   sudo
     2  63   8.68966%   ls
     3  43   5.93103%   ping
     4  31   4.27586%   soccer
     5  26   3.58621%   cd
     6  21   2.89655%   zypper
     7  19   2.62069%   nmcli
     8  17   2.34483%   python
     9  17   2.34483%   find
    10  17   2.34483%   cat
```
0

history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl | head -n10

turrtle13 · 2016-04-24 17:21:35 9
sorta apache logs by ip frequency
This is sample output - yours may be different.
0

cat access.log | awk '{print $1}' | sort -n | uniq -c | sort -nr | head -20

prees · 2016-05-05 20:52:03 13
list java heap summary
This is sample output - yours may be different.
0

ps -ef | grep -oh 'Xmx[0-9]*' | cut -d'x' -f2 | awk '{SUM += $1} END { print SUM}'

Raboo · 2016-05-13 11:12:08 12
Thread count per user
This is sample output - yours may be different.
0

ps -u jboss -o nlwp= | awk '{ num_threads += $1 } END { print num_threads }'

leonbartlett · 2016-05-23 08:41:47 736
delete some 4 months old docker images, not using force
This is sample output - yours may be different.
0

docker images |grep '4 months' | awk '{print$3}' | xargs docker rmi

breign · 2016-05-25 12:50:30 10
Diff two directories by finding and comparing the md5 checksums of their contents.

As output, checksums and filenames will be printed.
This is sample output - yours may be different.
0

diff <(sort <(md5deep -r /directory/1/) | awk -F '/' '{print $1 $NF}') <(sort <(md5deep -r /directory/2/) | awk -F '/' '{print $1 $NF}')

linux_noob · 2016-06-06 20:05:01 11
access.log to csv
This is sample output - yours may be different.
0

awk '{ agent=""; for(i=12; i<=NF; i++){agent=agent $i" ";} print "\""$1"\",\""$4" "$5"\","$6" "$7" "$8","$9","$10","$11","agent }' access.log

miramir · 2016-06-07 11:04:19 35
Auto-kill auto-spawned process

Given a process name (kdiff3 in this example) that keeps auto-spawning/starting, auto-kill until it stops, assuming there is an upper limit (if not, reboot). This was beneficial after I clicked the DIFF button in a git GUI on a merge commit. 2000+ files were being opened one after the other in my diff program (kdiff3). Each time I closed one (or quit Kdiff3), the next file would be auto-opened in Kdiff3.
This is sample output - yours may be different.
0

while [ ! -z $(ps -A | grep -m1 kdiff3 | awk '{print $1}') ]; do kill -9 $(ps -A | grep -m1 kdiff3 | awk '{print $1}'); sleep 1; done

supervisord · 2016-06-07 21:56:44 12
Ten most often used commands
This is sample output - yours may be different.
0

history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head

turrtle13 · 2016-07-01 19:38:01 12
Display the top ten running processes sorted by the memory usage:
This is sample output - yours may be different.
0

ps aux | awk '{if ($5 != 0 ) print $2,$5,$6,$11}' | sort -k2rn | head -10 | column -t

turrtle13 · 2016-07-01 19:40:56 12

dnscrypt-proxy: get servers with lowest rtt

tune ping's -c and parallel's -j for your needs Show Sample Output

awk -F, '$1!~/^Name/ {print $1,$(NF-3)}' dnscrypt-resolvers.csv | awk -F"[: ]" '$2!~/^\[/ {print $1,$2}' | parallel -j 10 --colsep " " "echo -n \"{1} \"; ping -qc 60 {2} | tr -d \"\\n\" |awk -F\"[/ ]+\" '{print \$(NF-3),\$2}'" |sort -rnk 2

petzah · 2016-07-17 12:06:28 13

Block all FaceBook traffic

I don't know why you would want to echo "blocking ....", but my alternative is functionally equivalent with the extra echo.
This is sample output - yours may be different.
0

ASN=32934;whois -H -h riswhois.ripe.net -- -F -K -i $ASN|awk '/^'$ASN'/ {if ($2 ~ /::/) {a="6"} else {a=""};b="sudo ip"a"tables -A INPUT -s "$2" -j REJECT"; print " blocking "$2;system(b)}'

AndrewM · 2016-07-22 07:48:27 14
Disk usage summary

Adds up the used disk space on all hard drives that are directly connected to the machine (i.e. no network mounts etc.) Assumes there are no IDE drives present. Show Sample Output
This is sample output - yours may be different.
```
18 GiB used in total
```
0

echo $(df -BG | grep sd | awk '{print $3}' | paste -sd+ | tr -d G | bc) GiB used in total

thureduehrsen · 2016-08-09 10:08:35 38
Show Available Disk Usage | Pretty Way

Shows available disk space on sda1 animated with colors Show Sample Output
This is sample output - yours may be different.
```
337G 
```
0

clear && df -h | grep /dev/sda1 | awk {'print $4'} | lolcat -a -s 10

frozenvortex · 2016-08-10 21:42:38 12
see whats getting written into all of the open logfiles under /var/log

The result will be a bunch of 'tail' commands running in the background in your current shell.
This is sample output - yours may be different.
0

eval `lsof +D /var/log|(read;awk '{print "tail -f " $9 " &" }'|sort|uniq)`

p_b_r · 2016-08-25 20:23:38 14
Watch PHP log, without knowing it's location (gets from php.ini)

Runs "php -i", filter the error_log location, then watches it using "tail"
This is sample output - yours may be different.
0

tail -v -f $(php -i | grep "^[ \t]*error_log" | awk -F"=>" '{ print $2; }' | sed 's/^[ ]*//g')

paulera · 2016-08-31 12:13:31 25
List just the executable files (or directories) in current directory

ls -l outputs long listing of files to awk, which sorts the output to include all lines that have the executable bit set (-x.), but excludes (!) the lines that have the directory bit set (drw), then prints the results to the screen. Show Sample Output
This is sample output - yours may be different.
```
-rwxr-xr-x. 1 root root    26 Sep 21 08:41 executable1
-rwxr-xr-x. 1 root root    26 Sep 21 08:42 executable2
```
0

ls -l|awk ''/-x./' && !'/drw/' {print}'

PCnetMD · 2016-09-21 14:42:10 15
Delete all php package
This is sample output - yours may be different.
0

sudo apt-get purge `dpkg -l | grep php| awk '{print $2}' |tr "\n" " "`

bDrwx · 2016-09-23 15:33:18 25
Get the current svn branch/tag (Good for PS1/PROMPT_COMMAND cases)

Diverse trunk and branch, when last index is trunk, show trunk repository name when last index minus one is branches, show branch repository name
This is sample output - yours may be different.
0

svn info | grep ^URL | awk 'BEGIN {FS="\/"}; {if($(NF-1)=="branches") {print $NF} else if($NF=="trunk") {print $(NF-1)} else {print $NF} } '

mtaqwim · 2016-10-18 02:16:45 17
Sum file sizes of found files
This is sample output - yours may be different.
0

find . -mtime +30 -exec ls -all "{}" \; | awk '{COUNTER+=$5} END {SIZE=COUNTER/1024/1024; print "size sum of found files is: " SIZE "MB"}'

breign · 2016-10-28 08:05:57 16
open listening ports

Useful to see what ports are taken by running services. Show Sample Output
This is sample output - yours may be different.
```
22
80
443
```
0

netstat -ltn | awk -n '/tcp /{ split($4, x, ":"); print(x[2]); }' | sort -n

felix_hummel · 2016-11-01 18:48:14 16
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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

GIT: list unpushed commits

Use jq to validate and pretty-print json output

The `jq` tool can also be used do validate json files and pretty print output: ` jq < file.json` Available on several platforms, including newer debian-based systems via `#sudo apt install jq`, mac via `brew install jq`, and from source https://stedolan.github.io/jq/download/ This alternative to the original avoids the useless use of cat

Adding a startup script to be run at bootup Ubuntu

This script will run each time you boot up.The script must be in /etc/init.d directory.

Check syntax for all PHP files in the current directory and all subdirectories

Give all those pictures the same name format, trailing zeros please for the right order, offset to merge different collections of pictures

When you have different digital cameras, different people, friends and you want to merge all those pictures together, then you get files with same names or files with 3 and 4 digit numbers etc. The result is a mess if you copy it together into one directory. But if you can add an offset to the picture number and set the number of leading zeros in the file name's number then you can manage. OFFS != 0 and LZ the same as the files currently have is not supported. Or left as an exercise, hoho ;) I love NF="${NF/#+(0)/}",it looks like a magic bash spell.

recursive search and replace old with new string, inside files

recursively traverse the directory structure from . down, look for string "oldstring" in all files, and replace it with "newstring", wherever found also: $ grep -rl oldstring . |xargs perl -pi~ -e 's/oldstring/newstring'

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Commands using awk (1,418)

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