Commands using grep (1,935)
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Using GNU Grep with perl regexp (works on newer Ubuntus) Show Sample Output
0ss -t -o state established '( dport = :443 || dport = :80 )' | grep -Po '([0-9a-z:.]*)(?=:http[s])' | sort -u|netcat whois.cymru.com 43|grep -v "AS Name"|sort -t'|' -k3 -
0yum list | grep my_repository_name
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by determining most popular use in history using percentage . Show Sample Output
0history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl | head -n10 -
debian kernel 4.4.6 Show Sample Output
0grep "checksum error at logical" /var/log/messages | egrep -o "[^ ]+$" | tr -d ')' | sort | uniq -
0ps -ef | grep -oh 'Xmx[0-9]*' | cut -d'x' -f2 | awk '{SUM += $1} END { print SUM}'
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Check that all websites on the current server are working as expected. This is a quick easy way to do that. Show Sample Output
0grep -h 'Server\(Name\|Alias\)' /etc/httpd/conf.d/*.conf | sed 's#\s*Server\(Name\|Alias\)\s*##g' | tr ' ' "\n" | xargs -I{} sh -c 'echo {},`curl -s -o /dev/null -w "%{http_code}" {}`' -
0docker images |grep '4 months' | awk '{print$3}' | xargs docker rmi
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0redis-cli -r 100 -i 1 info | grep used_memory_human:
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If you have to stop a bunch of processes or just want to get a list of their ID's, us this replacing with your process. Then you can use a loop to kill -9 all of them. Show Sample Output
0sudo <PROC_NAME> -aux |grep pals_ |tr -s " " |cut -d " " -f2 -
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.
0while [ ! -z $(ps -A | grep -m1 kdiff3 | awk '{print $1}') ]; do kill -9 $(ps -A | grep -m1 kdiff3 | awk '{print $1}'); sleep 1; done -
Finds the login id of the user that owns the console. I use it to reset my touchpad after resume from suspend in /etc/pm/sleep.d/s99local
0who | grep :0 | head -1 | cut -d " " -f 1 -
0grep -r "" /proc/asound/card*/pcm*/sub*/hw_params
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Replace thread_link with the link of the thread you want to download images of.
0wget thread_link -qO - | sed 's/\ /\n/g' | grep -e png -e jpg | grep href | sed 's/href\=\"/http:/g' | sed 's/"//g' | uniq | xargs wget -
I wanted a method to display the last run of my script from my log file. I had a pattern I could grep for to find the beginning of each run. This command line greps for that pattern in the log, finds the last occurrence and gives me the line number. Then I use the line number in tail to give me everything from that line number to the end of the log file. I tested this on Linux Mint (variant of Ubuntu) and on RHEL, but I suspect it will run many Linux systems.
0grep -n PATTERN /logs/somelog.log | cut -f1 -d: | tail -1 | xargs -I num tail -n +num /logs/somelog.log -
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
0echo $(df -BG | grep sd | awk '{print $3}' | paste -sd+ | tr -d G | bc) GiB used in total -
Shows available disk space on sda1 animated with colors Show Sample Output
0clear && df -h | grep /dev/sda1 | awk {'print $4'} | lolcat -a -s 10 -
0last -x | grep shutdown | head -1
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Requires mpc command line client Assumes only one output with "Local" in the name
0read -r -a MOUT <<< `mpc outputs | grep Local`; if [ ${MOUT[-1]} == "disabled" ]; then mpc enable ${MOUT[1]} 2&>1 > /dev/null; else mpc disable ${MOUT[1]} 2&>1 > /dev/null; fi -
Runs "php -i", filter the error_log location, then watches it using "tail"
0tail -v -f $(php -i | grep "^[ \t]*error_log" | awk -F"=>" '{ print $2; }' | sed 's/^[ ]*//g') -
0hostname -i | tr " " "\n" | grep -v "::\|^169.254\|^127.0.0.1" | cut -d"." -f1-3
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Extracts the binary from the .text section and escapes it. This puts it in a form ready to use in a program. Show Sample Output
0objdump -d -j .text ExeHere | grep -e '^ ' | tr '[[:space:]]' '\n' | egrep '^[[:alnum:]]{2}$' | xargs | sed 's/ /\\x/g' | sed -e 's/^/\\x/g' -
I seem to do this compulsively every time I change directories, sometimes even when I don't, even if I know exactly what I need to do. (Don't worry, the sample output is just an exaggeration. :) Show Sample Output
0grep -cx ls ~/.bash_history -
0sudo apt-get purge `dpkg -l | grep php| awk '{print $2}' |tr "\n" " "`
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0find . -type f \( -name '*.pm' -o -name '*.pl' \) | xargs grep "^use " | cut -d : -f2 | sort | uniq
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Seems to work on Ubuntu 14.02 LTS Show Sample Output
0objdump -s ./HelloWorld | grep -v '^ [0-9a-f][0-9a-f][0-9a-f][0-9a-f] \b' | grep -v 'Contents' | grep -v './' | cut -d' ' -f 3-6| sed 's/ //g' | sed '/./!d' | tr -d '\n'| sed 's/.\{2\}/&\\x/g' | sed 's/^/\\x/'|sed 's/..$//'|sed 's/^/"/;s/$/"/g' - ‹ First < 56 57 58 59 60 > Last ›
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