Commands using grep (1,935)
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I don't like doing a massive sort on all the directory names just to get a small set of them. the above shows a sorted list of all directories over 1GB. use head as well if you want. du's "-x" flag limits this to one file system. That's mostly useful when you run it on "/" but don't want "/proc" and "/dev" and so forth. Remember though that it will also exclude "/home" or "/var" if those are separate partitions. the "-a" option is often useful too, for listing large files as well as large directories. Might be slower.
0du -mx [directory] | grep -P '^\d{4}' | sort -rn -
The -a option in -aEio tells grep to treat binary files as text files. Show Sample Output
0grep -aEio '([[:alnum:]_.-]+@[[:alnum:]_.-]+?\.[[:alpha:].]{2,6})' -
Inner "ps...grep..." command searches for a process matching the specified . "lsof -p lists all file descriptors owned by . Includes open files, sockets, devices, etc... Show Sample Output
0sudo lsof -p `sudo ps aux | grep -i neo4j | grep -v grep | awk '{ print $2 }'` -
Counts of messages by recipient, with frozen messages excluded. Show Sample Output
0sudo /usr/sbin/exim -bp | sed -n '/\*\*\* frozen \*\*\*/,+1!p' | awk '{print $1}' | tr -d [:blank:] | grep @ | sort | uniq -c | sort -n -
0cvs -q status | grep ^[?F] | grep -v 'to-date'
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0svn st | grep ! | cut -c 9- | while read line;do svn resolved $line;done
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Required : information_schema ** Only replace the "DB-NAME" and "PREFIX" with your DB-name and wildcard prefix match. ** Also replace with your own username and password for mysql server. This command uses the information_schema to wildcard match tables that we donot need from a database and than pipes the remaining tables out through "xargs" command to the mysqldump utility which than dumps those remaining tables into a sql dump file. Show Sample Output
0mysql -uuser -ppass -e 'use information_schema; SELECT table_name FROM tables where table_schema="DB-NAME" and table_name NOT LIKE "PREFIX";' | grep -v table_name | xargs mysqldump DB-NAME -uuser -ppass > dump.sql -
This has saved me many times while debugging timeout issues to "too many open files" issues. A high number of the order of thousand, indicates that somewhere connection is not being closed properly. Show Sample Output
0while true; do netstat -a|grep WAIT|wc -l; sleep 5; done -
This command will help you to get Ip address origin of city and country. I will be happy if someone can shrink the sed command fb.me/josenirmal Show Sample Output
0wget -qO - whatismyipaddress.com/ip/<type ip address> | grep -E "City:|Country:" | sed 's:<tr><th>::'| sed 's</th>::' | sed 's:</td>::' | sed 's:</tr>::' | sed 's:<img*::' -
0salt -G 'os_family:Debian' cmd.run 'apt-get dist-upgrade --dry-run | grep ^Inst | cut -d" " -f2'
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0sudo dumpe2fs /dev/sda1 | grep superblock
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0while true; do curl -vsL -o /dev/null example.com 2>&1 | grep 503 > /dev/null || echo "OK: server is up."; sleep 8; done
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0while curl -dsL example.com 2>&1 | grep 503;do sleep 8;done;echo server up
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Goto phase 2 to clobber the interrupt that is problematic. Show Sample Output
0grep enabled /sys/firmware/acpi/interrupts/* -
I use this with alias: alias lsl="ls -1F | grep @ | sed 's/@//' | column"
0$ ls -1F | grep @ | sed 's/@//' | column -
I use this with alias: alias lsl="ls -1F | grep @$ | sed 's/@//' | column" Limitation: This will also list files that happen to have an @ at the end of the filename.
0ls -1F | grep @$ | sed 's/@//' | column -
This shows all process (-e) and threads (-L) in full format (-F) Show Sample Output
0ps -eLF | grep ^user -
Find mac address only from drivers, without using ifconfig. Show Sample Output
0/sbin/lspci -v | grep -i "Device Serial Number" -
0site=https://www.duden.de; wort="Apfel"; wget -O $wort.mp3 $(wget -O - "$site/rechtschreibung/$wort" | grep -o "$site/_media_/audio/[^\.]*\.mp3")
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becuase im lazy and cant be bothered looking at the tv guide to choose a channel , any improvments or comments appreciated
0randchannelurl=$(lynx -dump http://www.tvcatchup.com/channels.html | grep watch | sed 's/^......//'| awk 'BEGIN { srand() } int(rand() * NR) == 0 { x = $0 } END { print x }') && firefox -new-window $randchannelurl -
Pipes the header row of ps to STDERR, then greps for the command on the output of ps, removing the grep entry before that. Show Sample Output
0psgrep() { ps aux | tee >(head -1>&2) | grep -v " grep $@" | grep "$@" -i --color=auto; } -
List system current active ip address Show Sample Output
0ip addr list | grep global | awk '{print $7"\t"$2}' -
0for i in `find . -name "*.jar"`; do jar -tvf $i | grep -v /$ | awk -v file=$i '{print file ":" $8}'; done > all_jars.txt
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Solves these pesky errors you see in the Apache log: [Fri Jun 28 17:51:00 2013] [emerg] (28)No space left on device: Couldn't create accept lock (/monsoon/opt/apache2/logs/accept.lock.356) (5) Naturally, can be used to get rid of other semaphores. Note: change the apache user in accordance to your ENV. Show Sample Output
0ipcs -s | grep apache | awk ' { print $2 } ' | xargs ipcrm sem -
This will find all the -Xmx[BIGINT] running on a system, add them up for you and give you the total. Show Sample Output
0output=$(ps -ef|grep -i java 2>/dev/null); for w in ${output[@]}; do if [[ $w =~ .*Xmx.* ]]; then result=$(grep -oP "[0-9]+" <<< $w); echo $result ;fi ; done| awk 'BEGIN {sum=0} {for(i=1; i<=NF; i++) sum+=$i } END {print sum}' - ‹ First < 47 48 49 50 51 > Last ›
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