Commands using grep (1,935)
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This command allows you to find the effective uid and gid of the Apache process regardless of process name (which can be apache2 or httpd depending on distro).
-1ps -o euid,egid --ppid `netstat --inet --inet6 -pln|awk '/:80 / { split($7,tmp, "/"); print tmp[1]; }'`|sort |uniq|grep -v EUID -
So your boss wants to know how much memory has been assigned to each virtual machine running on your server... here's how to nab that information from the command line while logged in to that server Show Sample Output
-1for file in $( vmrun list | grep 'vmx$' | sort ); do printf "% 40s %s M\n" $(echo "$( echo -n ${file}:\ ; grep memsize $file )" | sed -e 's/.*\///' -e 's/"//g' -e 's/memsize.=//'); done; -
-1ps -eo args,%cpu | grep -m1 PROCESS | tr 'a-z-' ' ' | awk '{print $1}'
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Uses xargs to call the second grep with the first grep's results as arguments
-1grep -l bar *.log | xargs grep -l foo -
Unless you have files that include 'svn' in them, this should provide enough information to be useful. If you need to be certain, add the leading dot in the search pattern
-1find . | grep -v svn -
-1curl -s http://www.last.fm/user/$LASTFMUSER | grep -A 1 subjectCell | sed -e 's#<[^>]*>##g' | head -n2 | tail -n1 | sed 's/^[[:space:]]*//g'
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works in fedora, centos and presumably other distros that use chkconfig
-1for i in $(chkconfig --list | grep "4:on" | awk {'print $1'}); do chkconfig --level 4 "$i" off; done -
less ressources (processes) needed Show Sample Output
-1grep -w /media/KINGSTON /proc/mounts | cut -d " " -f -
Substitute that 724349691704 with an UPC of a CD you have at hand, and (hopefully) this oneliner should return the $Artist - $Title, querying discogs.com. Yes, I know, all that head/tail/grep crap can be improved with a single sed command, feel free to send "patches" :D Enjoy! Show Sample Output
-1wget http://www.discogs.com/search?q=724349691704 -O foobar &> /dev/null ; grep \/release\/ foobar | head -2 | tail -1 | sed -e 's/^<div>.*>\(.*\)<\/a><\/div>/\1/' ; rm foobar -
This will tighten up security for your box. The default value for PermitRootLogin sadly is 'yes'.
-1s=/etc/ssh/sshd_config;r=PermitRootLogin;cp $s{,.old}&& if grep $r $s;then sed "s/$r yes/$r no/" $s.old > $s; else echo $r no >> $s;fi -
-1mount | grep "mount point"
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-1yt-chanrip() { for i in $(curl -s http://gdata.youtube.com/feeds/api/users/"$1"/uploads | grep -Eo "watch\?v=[^[:space:]\"\'\\]{11}" | uniq); do youtube-dl --title --no-overwrites http://youtube.com/"$i"; done }
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This command, when run from the directory containing "filename", will remove the file and any hard or symbolic links to the file.
-1ls -ai | grep filename | find . -inum `awk '{print $1}'` -exec rm {} \; -
the result of the command helped a check the Maximum file size and Maximum file system size. EXT3 Exemple: Block size; MAX File size; Maximum file system size 1 KiB; 16 GiB ; 2 TiB 2 KiB ; 256 GiB ; 8 TiB 4 KiB ; 2 TiB ; 16 TiB 8 KiB[limits 1]; 2 TiB; 32 TiB Show Sample Output
-1tune2fs -l /dev/XXXX | grep -w ^"Block size:" -
Deletes capistrano-style release directories (except that there are dashes between the YYYY-MM-DD) Show Sample Output
-1find . -maxdepth 1 -type d | grep -Pv "^.$" | sort -rn --field-separator="-" | sed -n '3,$p' | xargs rm -rf -
-1svn st | grep -e [MA] | egrep -ve '.project|.classpath|.properties|.sh|.number' | awk -F' ' '{ print $2}' | xargs svn ci -m "message"
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This shows a list of channels from seeon.tv website to watch shows and movies
-1lynx --dump http://www.seeon.tv/channels| grep "/channels"|awk '{print $2}'|sort -u|while read links; do lynx --dump "$links"|awk '/view/ {print $2}'|sort -u; done -
-1grabtweets() { curl -s -o $GT_TMP twitter.com/$1 | cat $GT_TMP | grep entry-content | sed -e :loop -e 's/<[^>]*>//g;/</N;//bloop' | sed 's/^[ \t]*//'; }
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chrome only lets you export in html format, with a lot of table junk, this command will just export the titles of the links and the links without all that extra junk Show Sample Output
-1grep -E '<DT><A|<DT><H3' bookmarks.html | sed 's/<DT>//' | sed '/Bookmarks bar/d' | sed 's/ ADD_DATE=\".*\"//g' | sed 's/^[ \t]*//' | tr '<A HREF' '<a href' -
You can find every file with png extension and redirect its output to file. Later you can find a string inside the file.
-1find . -name "*.png" | tee images.txt | grep book -
Counts Mysql Threads mysql switches -N skip column names (remove headers) -s silent mode (removes separator chars) -r raw output -e execute grep switches -c count lines -v invert match (match all except) Show Sample Output
-1mysql -uUser -pPassword -N -s -r -e 'SHOW PROCESSLIST' | grep -cv "SHOW PROCESSLIST" -
-1git branch -a | grep "remotes/origin" | grep -v master | awk -F / '{print $3}' | xargs -I % git clone -b % git://github.com/jamesotron/DevWorld-2010-Cocoa-Workshop %
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There's nothing particularly novel about this combination of find, grep, and wc, I'm just putting it here in case I want it again. Show Sample Output
-1find . -name '*.java' -o -name '*.xml' | grep -v '\.svn' | xargs wc -l -
First column is number of photos, second column is the focal length. Show Sample Output
-1exiv2 *JPG | grep Focal | awk '{print $5}' | sort -n | uniq -c -
tutorial @ http://www.regular-expressions.info/lookaround.html also see @ http://stackoverflow.com/questions/5080988/how-to-extract-string-following-a-pattern-with-grep-regex-or-perl for tip: `grep -Po 'name="\K.*?(?=")' file.txt` Show Sample Output
-1echo "John's" | grep -Po '\b\w+(?<!s)\b' - ‹ First < 63 64 65 66 67 > Last ›
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