Commands using awk sorted by votes

Commands using awk (1,418)

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Revert all modified files in an SVN repo

This command allows you to revert every modified file one-by-one in a while loop, but also after "echo $file;" you can do any sort of processing you might want to add before the revert happens. Show Sample Output
This is sample output - yours may be different.
```
my/files.txt
Reverted 'my/files.txt'
```
0

svn status | grep "^M" | while read entry; do file=`echo $entry | awk '{print $2}'`; echo $file; svn revert $file; done

wsams · 2012-06-17 16:01:06 9
Number of connections per IP with range 24

cut -f1,2 - IP range 16 cut -f1,2,3 - IP range 24 cut -f1,2,3,4 - IP range 24 Show Sample Output
This is sample output - yours may be different.
```
      1 192.168.1.5
      5 192.168.1.2
      8 192.168.1.52
     15 192.168.1.3
     19 192.168.1.30
```
0

netstat -tn | grep :80 | awk '{print $5}'| grep -v ':80' | cut -f1 -d: |cut -f1,2,3 -d. | sort | uniq -c| sort -n

krishnan · 2012-06-26 08:29:37 3
Mute Master sound channel, printing only the percent volume
This is sample output - yours may be different.
0

amixer -c 0 set Master toggle | sed -n "$ p" | awk '{print $4}' | sed "s/[^0-9]//g"

dtsip · 2012-06-26 21:16:42 7
Unmuting master channel, printing only percent value, while suppressing other outputs
This is sample output - yours may be different.
0

amixer -c 0 set Master toggle | tail -1 | awk '{print $4}' | sed "s/[^0-9]//g" ; amixer -c 0 set Speaker toggle >/dev/null; amixer -c 0 set Front toggle >/dev/null

dtsip · 2012-06-26 21:18:07 5
Execute git submodule update in parallel with xargs
This is sample output - yours may be different.
0

git submodule status | awk '{print $2}' | xargs -P5 -n1 git submodule update --init

lox · 2012-06-27 19:26:56 3
Generate a password for website authentication that can be recreated each time you need to authenticate without saving the password

Create a bash function for easy reference webPassword() { echo $1 $2 | md5sum | awk '{print substr($0,0,10)}' } alias webpwd=webPassword Use like this. webpwd www.commandlinefu.com MyPetNameHere Show Sample Output
This is sample output - yours may be different.
```
$ echo http://www.TheWebSiteName.com privatekeyword | md5sum | awk '{print substr($0,0,10)}'

3ac2dd2389
```
0

echo http://www.TheWebSiteName.com privatekeyword | md5sum | awk '{print substr($0,0,10)}'

ertjies · 2012-06-28 11:32:08 3
Get the IP address
This is sample output - yours may be different.
0

ifconfig | grep "inet" | grep "broadcast" | awk '{print $2}'

wotan · 2012-07-13 01:24:42 3
Get the IP address

more variety
This is sample output - yours may be different.
0

ifconfig | grep "inet" | tail -1 | awk '{print $2}'

wotan · 2012-07-13 01:27:59 3
Get the IP address
This is sample output - yours may be different.
0

ip a s eth0 | awk '/inet / {print $2} | sed -e 's/\/..//g'

ilovespam · 2012-07-18 02:43:15 3
Get the IP address
This is sample output - yours may be different.
0

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

ilovespam · 2012-07-18 02:47:12 3
Get Unique Hostnames from Apache Config Files

Get a list of all the unique hostnames from the apache configuration files. Handy to see what sites are running on a server. When i saw the command i had some ideas to make it shorter. Here is my version.
This is sample output - yours may be different.
0

egrep 'ServerAlias|ServerName' /etc/apache2/sites-enabled/*.conf | awk '{printf "%s\t%s\n",$2,$3}' | sed 's/www.//' | sort | uniq

staeff · 2012-07-25 12:51:15 3
Displays all the fields of a table, really usefull to run it inside editor (Emacs or vim)

You can execute this inside an editor to get all the fields inside your buffer and do the magic, really usefull when your tables contain a giant list of fields. Show Sample Output
This is sample output - yours may be different.
```
user@machine:~$ echo "describe information_schema.COLUMNS" | mysql -u root | awk '{print $1}' | grep -v Field
TABLE_CATALOG
TABLE_SCHEMA
TABLE_NAME
COLUMN_NAME
ORDINAL_POSITION
COLUMN_DEFAULT
IS_NULLABLE
DATA_TYPE
CHARACTER_MAXIMUM_LENGTH
CHARACTER_OCTET_LENGTH
NUMERIC_PRECISION
NUMERIC_SCALE
CHARACTER_SET_NAME
COLLATION_NAME
COLUMN_TYPE
COLUMN_KEY
EXTRA
PRIVILEGES
```
0

echo "DESCRIBE dbname.table_name" | mysql -u dbusername | awk '{print $1}' | grep -v Field

adauto · 2012-07-26 21:06:11 3
sum and average of requests responses times or sizes in Apache2 access log

Depending on your Apache access log configuration you may have to change the sum+=$11 to previous or next awk token. Beware, usually in access log last token is time of response in microseconds, penultimate token is size of response in bytes. You may use this command line to calculate sum and average of responses sizes. You can also refine the egrep regexp to match specific HTTP requests. Show Sample Output
This is sample output - yours may be different.
```
Tot=134020202(15201)
Avg=8816.54
```
0

egrep '.*(("STATUS)|("HEAD)).*' http_access.2012.07.18.log | awk '{sum+=$11; ++n} END {print "Tot="sum"("n")";print "Avg="sum/n}'

fanchok · 2012-07-27 12:18:29 3
Remove from PATH paths containing a string

If there are spaces won't work.
This is sample output - yours may be different.
0

export PATH= $(echo $PATH | tr ':' '\n' | awk '!/matching string/' | paste -sd:)

bugmenot · 2012-07-29 00:30:54 3

Display IP addresses Pidgin IM Client is connected to

lsof -p `pidof pidgin` | awk '{ print $9 }'|egrep `hostname` | grep -o ">[^:]\+:" | tr -d ":>" | while read line; do host $line; done;

NaN0 · 2012-08-08 14:47:20 3

Add executable bit to all shell scripts under current directory recursively.

Allows to change 'shell' compatible files execution bit even if their name is not *.sh
This is sample output - yours may be different.
0

find . -type f -exec file '{}' + | grep shell | awk -F':' '{print $1}' | xargs chmod u+x

llebegue · 2012-08-09 18:53:08 3
Kill all processes belonging to a user

Okay, commands like this are a bit of a personal peeve. awk(1) operates on a /pattern/ {action} paradigm and yet I see people leave out the /pattern/ portion of an awk command all the time, opting to use grep or sed instead. You'll save yourself some typing and time if you include the /pattern/ with your {action}.
This is sample output - yours may be different.
0

ps wwwwuax|awk '/command/ { printf("kill -9 %s\n",$2) }'|/bin/sh

jetdillo · 2012-08-14 21:44:38 4
Random (sfw, 1920x1080) wallpaper from wallbase.cc
This is sample output - yours may be different.
0

wget --no-use-server-timestamps $(curl $(curl http://wallbase.cc/random/23/eqeq/1920x1080/0/100/20 | grep 'wallpaper/' | awk -F'"' '{print $2}' | head -n1) | grep -A4 bigwall | grep img | awk -F'"' '{print $2}'); feh --bg-center $(ls -1t | head -n1)

yosh · 2012-08-14 22:06:27 3
Connected to first screen session created
This is sample output - yours may be different.
0

screen -x $(screen -ls | awk 'NR == 2 { print $1 }')

codecaine · 2012-08-17 02:03:26 4
list all available disks and disk partitions

grep -e "[sh]d[a-l]$" /proc/partitions | awk '{print $4}' # for disks only grep -e "[sh]d[a-l][0-9]\+" /proc/partitions | awk '{print $4}' # for partitions only Show Sample Output
This is sample output - yours may be different.
```
sda
sda1
sda2
sda3
sdb
sdb1
sdb2
sdb3
```
0

grep -e "[sh]d[a-l][0-9]\?" /proc/partitions | awk '{print $4}'

kro · 2012-08-17 13:15:46 6
Network Interfaces

Linux only Show Sample Output
This is sample output - yours may be different.
```
lo
eth0
```
0

awk '{print $1}' /proc/net/dev|grep :|sed "s/:.*//g"

kro · 2012-08-17 13:36:47 56

Look for free ip's in a given /24 subnet.

The command will make it easy to determine free IP ranges in a crowded sub-net. Show Sample Output

SUBNET="192.168.41" ; diff -y <(nmap -sP -n ${SUBNET}.0/24 | grep ${SUBNET}. | awk '{print $5}' | sort -t"." -k4 -n) <(for i in $(seq 1 254); do echo ${SUBNET}.$i; done)

michel_p · 2012-08-28 09:11:18 4

add untracked/changed items to a git repository before doing a commit and/or sending upstream

I came up with this because I don't have a problem remembering the big major changes I made deep inside my tree for a specific feature or bugfix but always manage to forget the trivial stuff I tweaked or touched along the way that needs to get pushed as well. Show Sample Output
This is sample output - yours may be different.
```
bash-3.2$ git status|awk '/modified:/ { printf("git add %s\n",$3) }; NF ==2 { printf("git add %s\n",$2) }'
git add Android/
git add Docs/
bash-3.2$bash-3.2$ git status
# On branch dev
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#       new file:   Android/.classpath
#       new file:   Android/.project
#       new file:   Android/AndroidManifest.xml
```
0

git status|awk '/modified:/ { printf("git add %s\n",$3) }; NF ==2 { printf("git add %s\n",$2) }'|sh

jetdillo · 2012-09-03 00:09:04 5

add untracked/changed items to a git repository before doing a commit and/or sending upstream

Uses the --porcelain option, which is garanteed to be stable among git versions and configurations - also, is way easier to parse. Show Sample Output

git status --porcelain | awk '{print $2}' | xargs git add

brandizzi · 2012-09-05 18:07:26 4

Get Current CPU Usage

Get the current cpu % usage on your system. Show Sample Output
This is sample output - yours may be different.
```
13.50
```
0

top -n2 -d 0.5 | grep ^Cpu | sed 's/[[:alpha:]%]*//g' | awk 'NR == 2 {printf("%.2f\n",100-$5)}'

wizzra · 2012-09-06 12:56:26 5
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connect to all screen instances running

connects to all the screen instances running.

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" }

Print text string vertically, one character per line.

All what exists in dir B and not in dir A will be copied from dir B to new or existing dir C

Assumed dir A, B, C are subdirs of the current dir Exact syntax of the command is: rsync -v -r --size-only --compare-dest=/path_to_A/A/ /path_to_B/B/ /path_to_C/C/ (do not omit end-slashes, since that would copy only the names and not the contents of subdirs of dir B to dir C) You can replace --size-only with --checksum for more thorough file differences validation Useful switch: -n, --dry-run perform a trial run with no changes made

sort ugly text

Often, when sorting you want the sort to ignore extraneous characters. The b, d, and f tell sort to ignore leading blanks, use 'dictionary order' (ignore punctuation), and ignore (fold) case. Add a "u" if you only want one copy of duplicate lines. This is a great command to use within vim to sort lines of text, using !}sort -bdf

urldecoding

$ echo "http%3A%2F%2Fwww.google.com" | sed -e's/%$[0-9A-F][0-9A-F]$/\\\\\x\1/g' | xargs echo -e http://www.google.com $ Works under bash on linux. just alter the '-e' option to its corresponding equivalence in your system to execute escape characters correctly.

Create an SSH SOCKS proxy server on localhost:8000 that will re-start itself if something breaks the connection temporarily

This command will log you into somehost via SSH and then go into the background (-f). From there, you can point e.g. firefox at localhost:8000 as a SOCKS proxy. Autossh will use port 20000 and 20001 to send and receive test data on those ports to ensure the SSH tunnel is still running, and will try to re-start the tunnel if it goes down. Make sure you have ssh-agent running, or passwordless ssh keys distributed between the two hosts.

Remove a line from a file using sed (useful for updating known SSH server keys when they change)

Create a new file

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Commands using awk (1,418)

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