Commands using grep sorted by votes

Commands using grep (1,935)

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Check the total memory usage of processes with a specific name

Get the total RESIDENT memory used by processes of a specific name. This means this is the MINIMUM used by a process, but some memory could be paged out to swap. Show Sample Output
This is sample output - yours may be different.
```
$ pids=$(pidof chrome); for p in ${pids[@]}; do cat /proc/$p/status | grep -i vmrss | awk '{print $2}'; done | while read m; do let t=$t+$m; echo $t; done | echo "$(tail -n 1) kB"
12613760 kB
```
0

pids=$(pidof chrome); for p in ${pids[@]}; do cat /proc/$p/status | grep -i vmrss | awk '{print $2}'; done | while read m; do let t=$t+$m; echo $t; done | echo "$(tail -n 1) kB"

tyzbit · 2018-04-08 16:43:35 158
Arch Linux sort installed packages by size

This version accounts for the MiB/KiB suffix output by pacman these days.
This is sample output - yours may be different.
0

pacman -Qi | grep 'Name\|Size\|Description' | cut -d: -f2 | paste - - - | awk -F'\t' 'BEGIN{ s["MiB"]=1024; s["KiB"]=1;} {split($3, a, " "); print a[1] * s[a[2]], "KiB", $1}' | sort -n

Timo · 2018-04-24 13:29:57 156
hardcode dnsserver, no more rewriting of etc/resolv.conf

man NetworkManager.conf ... none: NetworkManager will not modify resolv.conf. This implies rc-manager unmanaged Show Sample Output
This is sample output - yours may be different.
```
[main]
dns=none
#plugins=ifcfg-rh,ibft
```
0

f="/etc/NetworkManager/NetworkManager.conf"; if ! grep ^dns $f > /dev/null; then sudo sed -i.bkp '/\[main\]/a dns=none' $f; fi

ksvnix · 2018-05-15 18:17:49 193
Kill all processes that listen to ports begin with 50 (50, 50x, 50xxx,...)
This is sample output - yours may be different.
0

sudo netstat -plnt | grep :50 | awk '{print $7}' | awk -F/ '{print $1}' | xargs kill -9

hiepdev · 2018-06-07 01:42:49 233
Count all [space][new line][space][new line] pattern using grep

Using to count all sentences in CoNLL data format
This is sample output - yours may be different.
0

echo $(( $(grep -c '^ $' file_name) / 2 ))

hiepdev · 2018-06-28 11:31:14 254
Update all Docker Images
This is sample output - yours may be different.
0

docker images | grep -v REPOSITORY | awk '{print $1}' | xargs -L1 docker pull

imjoseangel · 2018-07-19 09:14:14 48
Cross-region delete aws ec2 image
This is sample output - yours may be different.
0

for i in $(aws ec2 describe-regions --output text --region "" | cut -f 3); do aws ec2 describe-images --output text --region $i --filter Name=name,Values=myimage | cut -f 5 | grep ami* | xargs -I {} aws ec2 deregister-image --region $i --image-id {};done

leatherface · 2018-07-27 13:41:51 263
Remove all intermediate docker images after build
This is sample output - yours may be different.
0

docker images | grep <none> | awk '{ print $3; }' | xargs docker rmi

hiepdev · 2018-07-31 03:25:58 311
Toggle the Touchpad on or off
This is sample output - yours may be different.
0

tp=$(synclient -l | grep TouchpadOff | awk '{ print $3 }') && tp=$((tp==0)) && synclient TouchpadOff=$tp

jny · 2018-10-09 07:42:32 375
Get the running Kernel and Install date

Get the running Kernel and Install date
This is sample output - yours may be different.
0

uname -a;rpm -qi "kernel"-`uname -r`|grep "Install"

Skyman · 2018-12-04 17:27:30 1109
Find German synonyms using OpenThesaurus

A function for retrieving and displaying a list of synonyms for a German word or phrase. Show Sample Output
This is sample output - yours may be different.
```
$ desyno Läuterung
Aufbesserung, Aufwertung, Besserung, Läuterung, Melioration, Optimierung, Verbesserung, Verfeinerung, Vervollkommnung, Katharsis, Klärung, Läuterung, Reinigung
$ desyno linux
GNU/Linux, Linux
```
0

desyno(){ wget -q -O- https://www.openthesaurus.de/synonyme/search\?q\="$*"\&format\=text/xml | sed 's/>/>\n/g' | grep "<term term=" | cut -d \' -f 2 | paste -s -d , | sed 's/,/, /g' | fold -s -w $(tput cols); }

lordtoran · 2019-02-09 05:06:42 32
Cleanup remote git repository of all branches already merged into master

This is useful in teams where developers don't bother to remove branches after merging PR. These branches make it hard to seek for really useful branches, which gives us a nice value of finding and exploring other people's code even before they create PR for it.
This is sample output - yours may be different.
0

git branch --remotes --merged | grep -v master | sed 's@ origin/@:@' | xargs git push origin

pkozelka · 2019-03-11 13:51:22 34
Sort installed package on ArchLinux from low to high
This is sample output - yours may be different.
0

pacman -Qi | egrep '^(Name|Installed)' | cut -f2 -d':' | paste - - | column -t | sort -nk 2 | grep MiB

tianyu · 2019-04-21 05:19:56 37
Define a word from Linux Terminal

The link gets the definition from vocabulary.com. In case you are behind firewall, use --proxy URL in the curl option. Show Sample Output
This is sample output - yours may be different.
```
A welcome is a greeting that usually comes when you first arrive. Although you aren;t fond of Aunt Martha, you always manage to give her a warm welcome when she comes to visit.
```
0

function define() { curl -s https://www.vocabulary.com/dictionary/$1 | grep 'og:description' | sed 's/&#[0-9][0-9][0-9]//g' | awk -F "\"" '{print $4}' }; define welcome

snehanshu11 · 2019-06-11 11:57:15 43
Autocomplete directories (CWDs) of other ZSH processes (MacOS version)

MacOS Solution due to lack of pidof command and procfs on MacOS Kernel. Show Sample Output
This is sample output - yours may be different.
```
[ name@host ~/scripts ]$ xcd <TAB>
/Users/name/scripts              /Users/name/scripts/Boltdir
/usr/local/bin                   /var/log/
```
0

function _xterm_cwds() { for pid in $(pgrep -x zsh); do reply+=$(lsof -p $pid | grep cwd | awk '{print $9}') done }; function xcd() { cd $1 }; compctl -K _xterm_cwds xcd

cdiehl · 2019-06-15 02:26:11 35
Find Apache Root document

WRT the original solution: 1. I might be wrong, but it seems DocumentRoot (per Apache docs) should be spelled exactly as is, as it is case-sensitive. So using -i will return strings such as documentroot, DOCUMENTROOT,.... (which could been added as part of a comment) 2. It returns false results for such cases as DocumentRoot is embedded in a comment 3. It returns false results for such cases as OldDocumentRoot, DocumentRoot.sav, ... in a comment. Other notes: - FYI: There might be more than one valid DocumentRoot entry in the conf file (in case of using virtual host(s))
This is sample output - yours may be different.
0

grep -e '^[[:blank:]]*DocumentRoot[[:blank:]]\S'

doododoltala · 2019-07-10 23:12:08 45
Block all brute force attacks in realtime (IPv4/SSH)

Was to long with a loop, use a while loop for have it running 24/7
This is sample output - yours may be different.
0

inotifywait -r -q --format %w /var/log/auth.log|grep -i "Failed pass"|tail -n 1|grep -oE '\b([0-9]{1,3}\.){3}[0-9]{1,3}';iptables -I INPUT -i eth0 -s "$(cat /var/log/auth.log|grep "authentication failure; l"|awk -Frhost= '{print $2}'|tail -n 1)" -j DROP

wuseman1 · 2019-07-28 18:42:23 57

List all ubuntu installed packages in a single line

This command lists all currently installed packages in ubuntu in a single line, for example to use later with apt install. Show Sample Output

bugmenot · 2019-08-26 15:16:21 633

List all ubuntu installed packages in a single line

Use xargs command to make one line.
This is sample output - yours may be different.
0

dpkg --get-selections | grep -Evw 'deinstall$' | cut -f1 | sort -u | xargs

metropolis · 2019-08-26 15:57:52 255
Print hugepage consumption of each process

The sample output is from an Android Device Show Sample Output
This is sample output - yours may be different.
```
/vendor/bin/hw/qcrild-c2 smaps:AnonHugePages:      2048 kB

/vendor/bin/imsdatadaemon smaps:AnonHugePages:      4096 kB

/vendor/bin/imsdatadaemon smaps:AnonHugePages:      2048 kB
```
0

grep -e AnonHugePages /proc/*/smaps | awk '{ if($2>4) print $0} ' | awk -F "/" '{system("cat /proc/" $3 "/cmdline");printf("\n");print $0; printf("\n");}'

praton · 2020-01-14 07:50:44 98
Dump top 10 ports tcp/udp from nmap

To be used with other port scanners and or for help with iptables --dport 1000:2000 style expansion Show Sample Output
This is sample output - yours may be different.
```
7,9,13,21-23,25-26,37,53,79-81,88,106,110-111,113,119,135,139,143-144,179,199,389,427,443-445,465,513-515,543-544,548,554,587,631,646,873,990,993,995,1025-1029,1110,1433,1720,1723,1755,1900,2000-2001,2049,2121,2717,3000,3128,3306,3389,3986,4899,5000,5009,5051,5060,5101,5190,5357,5432,5631,5666,5800,5900,6000-6001,6646,7070,8000,8008-8009,8080-8081,8443,8888,9100,9999-10000,32768,49152-49157
```
0

nmap -oA derp --top-ports 10 localhost>/dev/null;grep 'services\=' derp.xml | sed -r 's/.*services\=\"(.*)(\"\/>)/\1/g'

operat0r · 2020-02-06 12:59:24 94
Extract queries from mysql general log

queries related to table 'Invoice_template' Show Sample Output
This is sample output - yours may be different.
0

grep -Eo '( *[^ ]* *){4}Invoice_Template( *[^ ]* *){4}' /mysql-bin-log/mysql-gen.log | head -10000 | sort -u

shantanuo · 2020-02-14 08:18:58 125
Find which config-file is read
This is sample output - yours may be different.
0

strace 2>&1 geany |grep geany.conf

knoppix5 · 2020-04-20 19:42:39 107
Compute newest kernel version from Makefile on Torvalds' git repository

Get newest kernel version by parsing the most bleeding-edge Makefile possible. Useful for doing things like writing live ebuilds and/or self-updating PKGBUILDs for testing purposes. Breakdown: * wget -qO - https://raw.githubusercontent.com/torvalds/linux/master/Makefile — retrieve Makefile and pipe to stdout * head -n5 — only the first 5 lines are relevant, that's where all the version variables are grep -E '\ \=\ [0-9]{1,}' — version variables always have an equals sign followed by a number * cut -d' ' -f3 — extract the individual numbers from the version variables * tr '\n' '.' — replace newlines with periods * sed -e "s/\.$// — remove trailing period Show Sample Output
This is sample output - yours may be different.
```
5.12.0
```
0

wget -qO - https://raw.githubusercontent.com/torvalds/linux/master/Makefile | head -n5 | grep -E '\ \=\ [0-9]{1,}' | cut -d' ' -f3 | tr '\n' '.' | sed -e "s/\.$//"

realkstrawn93 · 2021-04-27 17:12:05 419
Get all lines that start with a dot or period

Read a file or standard input and only outputs lines that start with a dot or period "." Show Sample Output
This is sample output - yours may be different.
```
.config
```
0

grep '^\.' file

bugmenot · 2021-08-22 16:04:11 222
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ssh: change directory while connecting

Useful to create an alias that sends you right in the directory you want : alias server-etc="ssh -t server 'cd /etc && $SHELL'"

Open Port Check

also could specify port number: lsof -ni TCP:80

Then end of the UNIX epoch

http://en.wikipedia.org/wiki/Year_2038_problem Some other notable dates that have passed: $ date -d@1234567890 $ date -d@1000000000

Sending a file over icmp with hping

you need to start a listening hping on the reciever: hping3 --listen 10.0.2.254 -I eth0 --sign MSGID1 then you can send your file: hping3 10.0.2.254 --icmp --sign MSGID1 -d 50 -c 1 --file a_file

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" }

Convert a date to timestamp

Simple way to get a timestamp from a date

Find biggest 10 files in current and subdirectories and sort by file size

Jump to a song in your XMMS2 playlist, based on song title/artist

Usage: Declare this function in your Shell, then use it like this: $> jumpTo foo The script will search for the 'foo' pattern in your current xmms2 playlist (artist or songname), and play the first occurence of it !

draw honeycomb

$ tput setaf 1 && tput rev && seq -ws "___|" 81|fold -69|tr "0-9" "_" && tput sgr0 $ $ # (brick wall)

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)

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Commands using grep (1,935)

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