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Commands tagged grep from sorted by
Terminal - Commands tagged grep - 339 results
domain=google.com; for ns in $(whois $domain | awk -F: '/Name Server/{print $2}'); do echo ">>> Nameservers for $domain from $a <<<"; dig @$ns $domain ns +short; echo; done;
2011-05-08 04:46:34
User: laebshade
Functions: awk dig echo whois
2

Change the $domain variable to whichever domain you wish to query.

Works with the majority of whois info; for some that won't, you may have to compromise:

domain=google.com; for a in $(whois $domain | grep "Domain servers in listed order:" --after 3 | grep -v "Domain servers in listed order:"); do echo ">>> Nameservers for $domain from $a

Note that this doesn't work as well as the first one; if they have more than 3 nameservers, it won't hit them all.

As the summary states, this can be useful for making sure the whois nameservers for a domain match the nameserver records (NS records) from the nameservers themselves.

sudo aptitude remove -P $(dpkg -l|awk '/^ii linux-image-2/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic\nlinux-image-%s-generic\n",$0,$0,$0)}')
2011-04-25 05:19:57
User: Bonster
Functions: awk sed sudo
-1

Same as 7272 but that one was too dangerous

so i added -P to prompt users to continue or cancel

Note the double space: "...^ii␣␣linux-image-2..."

Like 5813, but fixes two bugs: [1]This leaves the meta-packages 'linux-headers-generic' and 'linux-image-generic' alone so that automatic upgrades work correctly in the future. [2]Kernels newer than the currently running one are left alone (this can happen if you didn't reboot after installing a new kernel).

find . -maxdepth 1 -type d | grep -Pv "^.$" | sort -rn --field-separator="-" | sed -n '3,$p' | xargs rm -rf
cgrep() { GREP_COLOR="1;3$((RANDOM%6+1))" grep --color=always "$@" }
2011-03-04 18:45:58
User: derekschrock
Functions: grep
Tags: grep
-2

Randomize GNU grep's colors 31-36 excluding black and white.

curl ifconfig.me
wget http://cmyip.com -O - -o /dev/null | grep -Po '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+'
find . -type f | awk -F'.' '{print $NF}' | sort| uniq -c | sort -g
ls | grep -Eo "\..+" | sort -u
ls -Xp | grep -Eo "\.[^/]+$" | sort | uniq
2011-02-10 20:47:59
User: Amarok
Functions: grep ls sort
Tags: uniq ls grep
4

Works on current directory, with built-in sorting.

Command in description (Your command is too long - please keep it to less than 255 characters)
2011-02-03 08:25:42
User: __
Functions: command less
0
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!

curl http://www.discogs.com/search?q=724349691704 2> /dev/null | grep \/release\/ | head -2 | tail -1 | sed -e 's/^<div>.*>\(.*\)<\/a><\/div>/\1/'
wget 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
2011-01-30 23:34:54
User: TetsuyO
Functions: grep head rm sed tail wget
-1

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!

rm *[!teste0,teste1,teste2]
2011-01-25 22:00:29
Functions: rm
Tags: grep rm
-2

Remove all arquives except the list.

Can't have space between the commas.

rm *[!abc]
2011-01-25 19:41:41
User: Vilemirth
Functions: rm
Tags: grep rm
0

Bash method to remove all files but "abc".

It would be 'rm *~abc' in Zsh.

curl -s http://www.last.fm/user/$LASTFMUSER | grep -A 1 subjectCell | sed -e 's#<[^>]*>##g' | head -n2 | tail -n1 | sed 's/^[[:space:]]*//g'
find . | grep -v svn
2011-01-16 03:51:57
User: gwchamb
Functions: find grep
Tags: grep
-1

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

nmap -oG - -T4 -p22 -v 192.168.0.254 | grep ssh
2011-01-11 16:12:23
User: SeeFor
Functions: grep
Tags: nmap grep
6

Using NMAP to check to see if port 22(SSH) is open on servers and network devices.

grep -l foo *cl*.log | xargs grep -lL bar
2011-01-10 20:18:30
User: dlebauer
Functions: grep xargs
Tags: xargs grep
0

same as

grep -lL "foo" $(grep -l bar *cl*.log)
grep -l foo $(grep -l error *.log)
grep -l bar *.log | xargs grep -l foo
2011-01-10 19:54:46
User: dlebauer
Functions: grep xargs
Tags: bash xargs grep
-1

Uses xargs to call the second grep with the first grep's results as arguments

grep -L "string" filename*
find . -type f -name "*.tar" -printf [%f]\\n -exec tar -tf {} \; | grep -iE "[\[]|<filename>"
2011-01-06 13:01:38
Functions: find grep tar
Tags: find grep tar
1

A quick find command to identify all TAR files in a given path, extract a list of files contained within the tar, then search for a given string in the filelist. Returns to the user as a list of TAR files found (enclosed in []) followed by any matching files that exist in that archive. TAR can easily be swapped for JAR if required.

find /name/of/dir/ -name '*.txt' | xargs grep 'text I am searching for'
2011-01-05 15:20:40
User: erickb
Functions: find grep xargs
Tags: find xargs grep
1

recursively search dir for a a particular file type, search each file for a particular text.

dpkg -l python
2011-01-05 06:15:13
User: hackerb9
1

If the first two letters are "ii", then the package is installed. You can also use wildcards. For example,

.

dpkg -l openoffice*

.

Note that dpkg will usually not report packages which are available but uninstalled. If you want to see both which versions are installed and which versions are available, use this command instead:

.

apt-cache policy python
apt-show-versions | grep '\bpython\b'