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Commands using grep from sorted by
Terminal - Commands using grep - 1,621 results
while true; do netstat -p |grep "tcp"|grep --color=always "/[a-z]*";sleep 1;done
2009-07-16 04:52:49
User: buffer
Functions: grep netstat
-4

The -p parameter tell the netstat to display the PID and name of the program to which each socket belongs or in digestible terms list the program using the net.Hope you know what pipe symbol means!

Presently we wish to only moniter tcp connections so we ask grep to scan for string tcp, now from the op of grep tcp we further scan for regular expression /[a-z]*.

Wonder what that means ?

If we look at the op of netstat -p we can see that the name of the application is preceded by a / ( try netstat -p ) so,now i assume application name contains only characters a to z (usually this is the case) hope now it makes some sense.Regular expression /[a-z]* means to scan a string that start with a / and contains zero or more characters from the range a-z !!. Foof .. is t

grep -rc logged_in app/ | cut -d : -f 2 | awk '{sum+=$1} END {print sum}'
2009-07-15 14:16:44
User: terceiro
Functions: awk cut grep
-2

grep's -c outputs how may matches there are for a given file as "file:N", cut takes the N's and awk does the sum.

vim $(grep test *)
2009-07-15 10:15:04
User: goatboy
Functions: grep test vim
Tags: vim grep
4

I often use "vim -p" to open in tabs rather than buffers.

export LANG=C; grep string longBigFile.log
2009-07-14 12:48:02
User: ioggstream
Functions: export grep
Tags: grep LANG
0

greps using only ascii, skipping the overhead of matching UTF chars.

Some stats:

$ export LANG=C; time grep -c Quit /var/log/mysqld.log

7432

real 0m0.191s

user 0m0.112s

sys 0m0.079s

$ export LANG=en_US.UTF-8; time grep -c Quit /var/log/mysqld.log

7432

real 0m13.462s

user 0m9.485s

sys 0m3.977s

Try strace-ing grep with and without LANG=C

find . -name '*.html' -print0| xargs -0 -L1 cat |sed "s/[\"\<\>' \t\(\);]/\n/g" |grep "http://" |sort -u
2009-07-14 07:00:15
User: jamespitt
Functions: cat find grep sed sort xargs
4

Just a handy way to get all the unique links from inside all the html files inside a directory. Can be handy on scripts etc.

tar cvfz changes.tar.gz --exclude-vcs `svn diff -rM:N --summarize . | grep . | awk '{print $2}' | grep -E -v '^\.$'`
2009-07-13 19:39:10
User: jaysee
Functions: awk diff grep tar
2

Handy when you need to create a list of files to be updated when subversion is not available on the remote host. You can take this tar file, and upload and extract it where you need it. Replace M and N with the revisions specific to yours. Make sure you do this from an updated (svn up) working directory.

grep <pattern> -R . --exclude-dir='.svn'
fmiss() { grep -RL "$*" * }
2009-07-13 18:30:54
User: inkel
Functions: grep
Tags: grep
1

This one would be much faster, as it's only one executed command.

tokill=`ps -fea|grep process|awk '{ printf $2" "}'`; kill -9 $tokill;
ssh root@server 'tail --max-unchanged-stats=10 -n0 -F /var/log/auth.log ' | grep Accepted | while read l ; do kdialog --title "SSH monitor" --passivepopup "$l" 3; done
sudo port installed | grep -v 'active\|The' | xargs sudo port uninstall
grep -r 'keyword keyword2' your/path/ | grep -v svn
2009-07-08 20:48:11
User: anis
Functions: grep
-2

this command searches for a keyword or an expression in a path and avoids versionned files

find . -not \( -name .svn -prune \) -type f -print0 | xargs --null grep <searchTerm>
2009-07-08 20:08:05
User: qazwart
Functions: find grep xargs
Tags: find xargs grep
8

By putting the "-not \( -name .svn -prune \)" in the very front of the "find" command, you eliminate the .svn directories in your find command itself. No need to grep them out.

You can even create an alias for this command:

alias svn_find="find . -not \( -name .svn -prune \)"

Now you can do things like

svn_find -mtime -3
unzip -lt foo.zip | grep testing | awk '{print $2}' | xargs rm -r
LC_ALL=C tr -c "[:digit:]" " " < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR="1;32" grep --color "[^ ]"
2009-07-02 07:10:33
User: zzambia
Functions: dd grep tr
Tags: color
6

Solves "tr" issues with non C-locales under BSD-like systems (like OS X)

grep -v "\ *#\|^$" /etc/path/to.config
2009-06-30 18:14:46
Functions: grep
2

A short, *easy-er* to remember command for stripping whitespace and comments from a config file, (or any file for that matter).

Remember regex as:

slash, space, star.

pound, slash, bar.

pointy-hat, dollar. (or "caret, dollar" if you must)

:-P

tr -c "[:digit:]" " " < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR="1;32" grep --color "[^ ]"
S=`pidof skype`;grep heap /proc/$S/maps|cut -f1 -d' '|awk -F- '{print "0x" $1 " 0x" $2}'|xargs echo "du me t ">l;gdb -batch -p $S -x l>/dev/null 2>&1;strings t|grep \(smirk|head -n1
2009-06-26 20:03:17
User: alvieboy
Functions: awk cut echo grep head xargs
0

Skype has an internal regex which depicts the emoticons it supports. However you cannot simply search the binary file for it. This small 181 character line will do just that, provided skype is running. And of course, only works in linux.

ps aux | grep -v `whoami`
echo "-------------" >> nicinfo.txt; echo "computer name x" >> nicinfo.txt; ifconfig | grep status >> nicinfo.txt; ifconfig | grep inet >> nicinfo.txt; ifconfig | grep ether >> nicinfo.txt; hostinfo | grep type >> nicinfo.txt;
while true; do { $(which logger) -p local4.notice `free -m | grep Mem`; sleep 60; } done &
2009-06-22 00:29:53
User: Neo23x0
Functions: grep sleep which
3

Uses logger in a while loop to log memory statistics frequently into the local syslog server.

svn status | grep '!' | sed 's/!/ /' | xargs svn del --force
cut -d: -f1 /etc/passwd | grep -vE "#" | xargs -i{} crontab -u {} -l
2009-06-18 16:49:52
User: hoberion
Functions: crontab cut grep xargs
1

additionally use "find /etc/cron*" for cronscripts

grep -v "^\W$" <filename>
2009-06-18 08:17:22
User: nikc
Functions: grep
Tags: grep non-empty
0

I had some trouble removing empty lines from a file (perhaps due to utf-8, as it's the source of all evil), \W did the trick eventually.

grep -2 -iIr "err\|warn\|fail\|crit" /var/log/*
2009-06-17 19:41:04
User: miketheman
Functions: grep
6

Using the grep command, retrieve all lines from any log files in /var/log/ that have one of the problem states