Commands tagged grep (409)
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0ifconfig eth0 | grep -o "inet [^ ]*" | cut -d: -f2
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Quicker way to search man pages of command for key word Show Sample Output
0function mg(){ man ${1} | egrep ${2} | more; } -
Gnu grep allows to restrict the search to files only matching a given pattern. It also allows to exclude files.
0grep -R --include=*.cpp --include=*.h --exclude=*.inl.h "string" . -
If we want files with more than one extension, like .tar.gz, only appear the latest, .gz:
ls -Xp /path/to/dir | grep -Eo "\.[^./]+$" | uniqShow Sample Output0ls -Xp /path/to/dir | grep -Eo "\.[^/]+$" | uniq -
recursive find and replace. important stuff are grep -Z and zargs -0 which add zero byte after file name so sed can work even with file names with spaces.
0grep -ZlRr -e BAD_SCRIPT_LINE * |xargs -0 sed -i 's/BAD_SCRIPT_LINE//g' -
0pgrep -c cat
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0grep -i '[^script$]' 1.txt
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grep multiline in Perl regexp syntax with pcregrep Show Sample Output
0pcregrep --color -M -N CRLF "owa_pattern\.\w+\W*\([^\)]*\)" source.sql -
I used 110 as the port number in examples for clarity. backslash+lessthan or backslash+b marks 'edge of the word'. Show Sample Output
0grep '\<110/' /etc/services; grep '\b110/' /etc/services -
range context (-A -B) search, with exclusion of vcs directories Show Sample Output
0pcregrep -r --exclude_dir='.svn' --include='.*jsp$' -A 2 -B 2 --color "pHtmlHome" . -
Some source package have many 'README' kind of files, among many other regular files/directories. This command could be useful when one wants to list only 'README' kind of files among jungle of other files. (e.g. I came across this situation after downloading source for module-init-tools) Warning: This command would miss a file like => README.1 (or one with spaces in-between) Corrections welcome. Show Sample Output
0ls | grep '^[A-Z0-9]*$' -
0apt-show-versions | grep '\bpython\b'
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0grep -l foo $(grep -l error *.log)
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same as
grep -lL "foo" $(grep -l bar *cl*.log)0grep -l foo *cl*.log | xargs grep -lL bar -
Bash method to remove all files but "abc". It would be 'rm *~abc' in Zsh.
0rm *[!abc] -
Changed wget to curl and it doesn't create a file anymore. Show Sample Output
0curl http://www.discogs.com/search?q=724349691704 2> /dev/null | grep \/release\/ | head -2 | tail -1 | sed -e 's/^<div>.*>\(.*\)<\/a><\/div>/\1/' -
yt2mp3(){ for j in `seq 1 301`;do i=`curl -s gdata.youtube.com/feeds/api/users/$1/uploads\?start-index=$j\&max-results=1|grep -o "watch[^&]*"`;ffmpeg -i `wget youtube.com/$i -qO-|grep -o 'url_map"[^,]*'|sed -n '1{s_.*|__;s_\\\__g;p}'` -vn -ab 128k "`youtube-dl -e ${i#*=}`.mp3";done;}squeezed the monster (and nifty ☺) command from 7776 from 531 characters to 284 characters, but I don't see a way to get it down to 255. This is definitely a kludge!0Command in description (Your command is too long - please keep it to less than 255 characters) -
0wget http://cmyip.com -O - -o /dev/null | grep -Po '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+'
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easier to remember Show Sample Output
0grep -v ^# /etc/somefile.conf | grep . -
Why use grep and awk?
0ifconfig | awk '/HWaddr/ { print $1, $5 }' -
If your version of curl does not support the --compressed option, use
curl -s http://funnyjunk.com | gunzipinstead ofcurl -s --compressed http://funnyjunk.com0curl -s --compressed http://funnyjunk.com | awk -F'"' '/ '"'"'mainpagetop24h'"'"'/ { print "http://funnyjunk.com"$4 }' | xargs curl -s | grep -o 'ht.*m/pictures/.*\.jpg\|ht.*m/gifs/.*\.gif' | grep "_......_" | uniq | xargs wget -
vim 7 required
0vim -p `grep -r PATTERN TARGET_DIR | cut -f1 -d: | sort | uniq | xargs echo -n` -
nothing special Show Sample Output
0ls -l | grep ^d | sed 's:.*\ ::g' -
No final count, but clean and simple output.
0system_profiler SPApplicationsDataType | grep -A3 -B4 "Kind: PowerPC" -
Expand a URL, aka do a head request, and get the URL. Copy this value to clipboard.
0function expand_url() { curl -sI $1 | grep Location: | cut -d " " -f 2 | tr -d "\n" | pbcopy } - ‹ First < 7 8 9 10 11 > Last ›
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