Commands using grep (1,935)
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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
0pids=$(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" -
This version accounts for the MiB/KiB suffix output by pacman these days.
0pacman -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 -
man NetworkManager.conf ... none: NetworkManager will not modify resolv.conf. This implies rc-manager unmanaged Show Sample Output
0f="/etc/NetworkManager/NetworkManager.conf"; if ! grep ^dns $f > /dev/null; then sudo sed -i.bkp '/\[main\]/a dns=none' $f; fi -
0sudo netstat -plnt | grep :50 | awk '{print $7}' | awk -F/ '{print $1}' | xargs kill -9
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Using to count all sentences in CoNLL data format
0echo $(( $(grep -c '^ $' file_name) / 2 )) -
0docker images | grep -v REPOSITORY | awk '{print $1}' | xargs -L1 docker pull
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0for 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
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0docker images | grep <none> | awk '{ print $3; }' | xargs docker rmi
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0tp=$(synclient -l | grep TouchpadOff | awk '{ print $3 }') && tp=$((tp==0)) && synclient TouchpadOff=$tp
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Get the running Kernel and Install date
0uname -a;rpm -qi "kernel"-`uname -r`|grep "Install" -
A function for retrieving and displaying a list of synonyms for a German word or phrase. Show Sample Output
0desyno(){ wget -q -O- https://www.openthesaurus.de/synonyme/search\?q\="$*"\&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); } -
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.
0git branch --remotes --merged | grep -v master | sed 's@ origin/@:@' | xargs git push origin -
0pacman -Qi | egrep '^(Name|Installed)' | cut -f2 -d':' | paste - - | column -t | sort -nk 2 | grep MiB
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The link gets the definition from vocabulary.com. In case you are behind firewall, use --proxy URL in the curl option. Show Sample Output
0function 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 -
MacOS Solution due to lack of pidof command and procfs on MacOS Kernel. Show Sample Output
0function _xterm_cwds() { for pid in $(pgrep -x zsh); do reply+=$(lsof -p $pid | grep cwd | awk '{print $9}') done }; function xcd() { cd $1 }; compctl -K _xterm_cwds xcd -
WRT the original solution: 1. I might be wrong, but it seems DocumentRoot (per Apache docs) should be spelled exactly as is, as it is case-sensitive. So using -i will return strings such as documentroot, DOCUMENTROOT,.... (which could been added as part of a comment) 2. It returns false results for such cases as DocumentRoot is embedded in a comment 3. It returns false results for such cases as OldDocumentRoot, DocumentRoot.sav, ... in a comment. Other notes: - FYI: There might be more than one valid DocumentRoot entry in the conf file (in case of using virtual host(s))
0grep -e '^[[:blank:]]*DocumentRoot[[:blank:]]\S' -
Was to long with a loop, use a while loop for have it running 24/7
0inotifywait -r -q --format %w /var/log/auth.log|grep -i "Failed pass"|tail -n 1|grep -oE '\b([0-9]{1,3}\.){3}[0-9]{1,3}';iptables -I INPUT -i eth0 -s "$(cat /var/log/auth.log|grep "authentication failure; l"|awk -Frhost= '{print $2}'|tail -n 1)" -j DROP -
This command lists all currently installed packages in ubuntu in a single line, for example to use later with apt install. Show Sample Output
0dpkg --get-selections | grep -v deinstall | sort -u | cut -f 1 | tr '\r\n' ' ' | sed '$s/ $/\n/' -
Use xargs command to make one line.
0dpkg --get-selections | grep -Evw 'deinstall$' | cut -f1 | sort -u | xargs -
The sample output is from an Android Device Show Sample Output
0grep -e AnonHugePages /proc/*/smaps | awk '{ if($2>4) print $0} ' | awk -F "/" '{system("cat /proc/" $3 "/cmdline");printf("\n");print $0; printf("\n");}' -
To be used with other port scanners and or for help with iptables --dport 1000:2000 style expansion Show Sample Output
0nmap -oA derp --top-ports 10 localhost>/dev/null;grep 'services\=' derp.xml | sed -r 's/.*services\=\"(.*)(\"\/>)/\1/g' -
queries related to table 'Invoice_template' Show Sample Output
0grep -Eo '( *[^ ]* *){4}Invoice_Template( *[^ ]* *){4}' /mysql-bin-log/mysql-gen.log | head -10000 | sort -u -
0strace 2>&1 geany |grep geany.conf
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Get newest kernel version by parsing the most bleeding-edge Makefile possible. Useful for doing things like writing live ebuilds and/or self-updating PKGBUILDs for testing purposes. Breakdown: * wget -qO - https://raw.githubusercontent.com/torvalds/linux/master/Makefile — retrieve Makefile and pipe to stdout * head -n5 — only the first 5 lines are relevant, that's where all the version variables are grep -E '\ \=\ [0-9]{1,}' — version variables always have an equals sign followed by a number * cut -d' ' -f3 — extract the individual numbers from the version variables * tr '\n' '.' — replace newlines with periods * sed -e "s/\.$// — remove trailing period Show Sample Output
0wget -qO - https://raw.githubusercontent.com/torvalds/linux/master/Makefile | head -n5 | grep -E '\ \=\ [0-9]{1,}' | cut -d' ' -f3 | tr '\n' '.' | sed -e "s/\.$//" -
Read a file or standard input and only outputs lines that start with a dot or period "." Show Sample Output
0grep '^\.' file - ‹ First < 59 60 61 62 63 > Last ›
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