Commands using egrep (220)

  • Get a process's pid by supplying its name


    1
    pidof () { ps acx | egrep -i $@ | awk '{print $1}'; }
    pmbuko · 2009-02-06 15:33:46 12
  • ps grep with header

    Yet another ps grep function, but this one includes the column headings. Show Sample Output


    1
    psg () { ps auxwww | egrep "$1|PID" | grep -v grep }
    mulad · 2009-02-18 23:37:35 6
  • for x in `psql -e\l | awk '{print $1}'| egrep -v "(^List|^Name|\-\-\-\-\-|^\()"`; do pg_dump -C $x | gzip > /backups/$x-back.gz

    Ran as the postgres user, dumps each database individually. It dumps with the create statements as well, so you can just 'zcat $x-nightly.dmp.gz | psql' to reimport/recreate a database from a backup.


    1
    for x in `psql -e\l | awk '{print $1}'| egrep -v "(^List|^Name|\-\-\-\-\-|^\()"`; do pg_dump -C $x | gzip > /var/lib/pgsql/backups/$x-nightly.dmp.gz; done
    f4nt · 2009-02-21 15:21:09 6
  • Show battery infomations for OS X 10.5.x


    1
    system_profiler SPPowerDataType | egrep -e "Connected|Charge remaining|Full charge capacity|Condition" | sed -e 's/^[ \t]*//'
    bpfx · 2009-07-01 15:09:08 8
  • Search commandlinefu from the command line

    There's probably a more efficient way to do this rather than the relatively long perl program, but perl is my hammer, so text processing looks like a nail. This is of course a lot to type all at once. You can make it better by putting this somewhere: clf () { (curl -d "q=$@" http://www.commandlinefu.com/search/autocomplete 2>/dev/null) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/<a style="display:none" class="destination" href="//g;s/<[^>]*>//g;s/">$/\n\n/g;s/^ +|\([0-9]+ votes,//g;s/^\//http:\/\/commandlinefu.com\//g'; } Then, to look up any command, you can do this: clf diff This is similar to http://www.colivre.coop.br/Aurium/CLFUSearch except that it's just one line, so more in the spirit of CLF, in my opinion. Show Sample Output


    1
    (curl -d q=grep http://www.commandlinefu.com/search/autocomplete) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/a style="display:none" class="destination" href="//g;s/<[^>]*>//g;s/">$/\n\n/g;s/^ +//g;s/^\//http:\/\/commandlinefu.com\//g'
    isaacs · 2009-07-08 22:10:49 13
  • Scrape commands from commandline fu's 1st page

    just bored here at work ... if your are daring ... add '| bash' .... enjoy require 'ruby' Show Sample Output


    1
    curl -s http://www.commandlinefu.com/commands/browse|egrep '("Fin.*and"|<div class="command">.*</div>)'|sed 's/<[^<]*>//g'|ruby -rubygems -pe 'require "cgi"; $_=sprintf("\n\n%-100s\n\t#%-20s",CGI.unescapeHTML($_).chomp.strip, gets.lstrip) if $.%2'
    copremesis · 2009-08-18 19:04:03 4
  • Output files without comments or empty lines

    better integration. works on all Unices works one bash and ksh. Show Sample Output


    1
    function catv { egrep -v "^$|^#" ${*} ; }
    mobidyc · 2009-09-11 14:58:47 3
  • Grep auth log and print ip of attackers

    Work for me on CentOS, grep and print ip addresses of ssh bruteforce attempts Show Sample Output


    1
    egrep 'Failed password for invalid' /var/log/secure | awk '{print $13}' | uniq
    servermanaged · 2009-10-04 18:08:13 7
  • Build an exhaustive list of maildir folders for mutt

    Of course, you can adjust "Maildir" to your config... Show Sample Output


    1
    find ~/Maildir/ -mindepth 1 -type d | egrep -v '/cur$|/tmp$|/new$' | xargs
    ook · 2009-11-05 14:11:29 3
  • Find unused IPs on a given subnet


    1
    nmap -sP <subnet>.* | egrep -o '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' > results.txt ; for IP in {1..254} ; do echo "<subnet>.${IP}" ; done >> results.txt ; cat results.txt | sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 | uniq -u
    bortoelnino · 2010-01-22 00:26:42 4
  • find all open files by named process

    lists all files that are opened by processess named $processname egrep 'w.+REG' is to filter out non file listings in lsof, awk to get the filenames, and sort | uniq to remove duplciation Show Sample Output


    1
    lsof -c $processname | egrep 'w.+REG' | awk '{print $9}' | sort | uniq
    alustenberg · 2010-02-24 16:47:49 6
  • Iterate through current directory + all subs for C++ header files and rank by # of comments

    This shows you which files are most in need of commenting (one line of output per file)


    1
    find ./ -name *.h -exec egrep -cH "// | /\*" {} \; | awk -F':' '{print $2 ":" $1}' | sort -gr
    blocky · 2010-04-23 19:00:07 3
  • dd with progress bar and statistics

    Will automatically take the size of the file but longer, usefull only if in an function.


    1
    dd if=FILE | pv -s $(stat FILE | egrep -o "Size: [[:digit:]]*" | egrep -o "[[:digit:]]*") | dd of=OUTPUT
    andrepuel · 2011-02-09 22:21:06 4
  • kill all running instances of wine and programs runned by it (exe)

    Look mah! All pipes


    1
    ps ax | egrep "*.exe|*exe]" | awk '{ print $1 }' | xargs kill
    coffeeaddict_nl · 2011-03-01 09:48:47 3
  • Show a script or config file without comments or blank lines


    1
    egrep -v "^$|^#" file
    wincus · 2011-05-23 11:39:24 18
  • Debug your makefile

    Say your dependencies specified in your Makefile (or dates on your source files) is causing 'make' to skip some source-files (that it should not) or on the other other end, if it is causing make to always build some source-files regardless of dates of target, then above command is handy to find out what 'make' thinks of your date v/s target date-wise or what dependencies are in make's view-point. The egrep part removes the extra noise, that you might want to avoid. Show Sample Output


    1
    make -d | egrep --color -i '(considering|older|newer|remake)'
    b_t · 2011-06-03 01:55:08 53
  • Find the package a command belongs to on debian-based distros

    Advanced revision to the command 8776 . This revision follows symbolic links. The quotation-marks surrounding $(which $1) allows for graceful handling of errors ( ie. readlink does not complain incase 'which' command generates (null) output) Show Sample Output


    1
    whichpkg () { dpkg -S $1 | egrep -w $(readlink -f "$(which $1)")$; }
    b_t · 2011-07-17 13:39:56 3
  • Get all URLs from webpage via Regular Expression

    Get all URLs from website via Regular Expression... You must have lynx installed in your computer to execute the command. --> lynx --dump "" | egrep -o "" - Must substitute it for the website path that you want to extract the URLs - Regular Expression that you wanna filter the website Show Sample Output


    1
    lynx --dump "http://www.google.com.br" | egrep -o "http:.*"
    felipelageduarte · 2011-09-05 01:12:15 3
  • Hide comments

    Hide comments and empty lines, included XML comments, Show Sample Output


    1
    nocomments () { cat $1 | egrep -v '^[[:space:]]*#|^[[:space:]]*$|^[[:space:]]*;' | sed '/<!--.*-->/d' | sed '/<!--/,/-->/d'; }
    RuizTapiador · 2011-11-04 12:47:39 57
  • Equivalent to ifconfig -a in HPUX

    Command is properly working on HP-UX 11.31 Show Sample Output


    1
    for i in `netstat -rn|egrep -v "Interface|Routing"|awk '{print $5}'`;do ifconfig $i;done
    giorger · 2011-12-16 09:49:03 6
  • url shortner using google's shortner api

    First get a api key for google url shortner from here https://developers.google.com/url-shortener/ Then replace the API_KEY in the command Show Sample Output


    1
    shorty () { curl -s https://www.googleapis.com/urlshortener/v1/url\?key\=API_KEY -H 'Content-Type: application/json' -d '{"longUrl": "'"$1"'"}' | egrep -o 'http://goo.gl/[^"]*' }
    cybersiddhu · 2012-04-26 18:30:50 4
  • Plaintext credentials sniffing with tcpdump and grep

    Simple TCPDUMP grepping for common unsafe protocols (HTTP, POP3, SMTP, FTP) Show Sample Output


    1
    tcpdump port http or port ftp or port smtp or port imap or port pop3 -l -A | egrep -i 'pass=|pwd=|log=|login=|user=|username=|pw=|passw=|passwd=|password=|pass:|user:|username:|password:|login:|pass |user ' --color=auto --line-buffered -B20
    jseidl · 2012-06-18 19:27:54 3
  • Clean config from # and empty strings


    1
    egrep -v '(\t)?#.*|^$' /etc/apache2/sites-available/default
    sc0rp1us · 2012-12-07 06:04:14 4
  • tcpdump sniff pop3,imap,smtp and http


    1
    tcpdump -i eth0 port http or port smtp or port imap or port pop3 -l -A | egrep -i 'pass=|pwd=|log=|login=|user=|username=|pw=|passw=|passwd=|password=|pass:|user:|userna me:|password:|login:|pass |user '
    ene2002 · 2013-02-07 19:14:58 4
  • Shows size of dirs and files, hidden or not, sorted.

    Enhanced version: fixes sorting by human readable numbers, and filters out non MB or GB entries that have a G or an M in their name.


    1
    du --max-depth=1 -h * |sort -h -k 1 |egrep '(M|G)\s'
    TerDale · 2013-02-14 08:56:56 6
  •  < 1 2 3 4 5 >  Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

tar directory and compress it with showing progress and Disk IO limits
tar directory and compress it with showing progress and Disk IO limits. Pipe Viewer can be used to view the progress of the task, Besides, he can limit the disk IO, especially useful for running Servers.

Convert multiple flac files to mp3
make sure that flac and lame are installed sudo apt-get install lame flac

colorize your svn diff
Will colorize your svn diff.

Do quick arithmetic on numbers from STDIN with any formatting using a perl one liner.
Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers.

Create the four oauth keys required for a Twitter stream feed
Twitter stream feeds now require authentication. This command is the FIRST in a set of five commands you'll need to get Twitter authorization for your final Twitter command. *** IMPORTANT *** Before you start, you have to get some authorization info for your "app" from Twitter. Carefully follow the instructions below: Go to dev.twitter.com/apps and choose "Create a new application". Fill in the form. You can pick any name for your app. After submitting, click on "Create my access token". Keep the resulting page open, as you'll need information from it below. If you closed the page, or want to get back to it in the future, just go to dev.twitter.com/apps Now customize FIVE THINGS on the command line as follows: 1. Replace the string "Consumer key" by copying & pasting your custom consumer key from the Twitter apps page. 2. Replace the string "Consumer secret" by copying & pasting your consumer secret from the Twitter apps page. 3. Replace the string "Access token" by copying & pasting your access token from the Twitter apps page. 4. Replace string "Access token secret" by copying & pasting your own token secret from the Twitter apps page. 5. Replace the string 19258798 with the Twitter UserID NUMBER (this is **NOT** the normal Twitter NAME of the user you want the tweet feed from. If you don't know the UserID number, head over to www.idfromuser.com and type in the user's regular Twitter name. The site will return their Twitter UserID number to you. 19258798 is the Twitter UserID for commandlinefu, so if you don't change that, you'll receive commandlinefu tweets, uhm... on the commandline :) Congratulations! You're done creating all the keys! Environment variables k1, k2, k3, and k4 now hold the four Twitter keys you will need for your next step. The variables should really have been named better, e.g. "Consumer_key", but in later commands the 256-character limit forced me to use short, unclear names here. Just remember k stands for "key". Again, remember, you can always review your requested Twitter keys at dev.twitter.com/apps. Our command line also creates four additional environment variables that are needed in the oauth process: "once", "ts", "hmac" and "id". "once" is a random number used only once that is part of the oauth procedure. HMAC is the actual key that will be used later for signing the base string. "ts" is a timestamp in the Posix time format. The last variable (id) is the user id number of the Twitter user you want to get feeds from. Note that id is ***NOT*** the twitter name, if you didn't know that, see www.idfromuser.com If you want to learn more about oauth authentication, visit oauth.net and/or go to dev.twitter.com/apps, click on any of your apps and then click on "Oauth tool" Now go look at my next command, i.e. step2, to see what happens next to these eight variables.

Remove BOM (Byte Order Mark) from text file
Takes file (text.txt), removes BOM from it, and outputs the result to a new file (newFile.txt). BOM is "Byte Order Mark" ([http://en.wikipedia.org/wiki/Byte_order_mark]), an invisible, non-breaking, zero-length character. In other words, if you see a DIFF with "" at the beginning, you've got a byte order mark, which can't be removed without this command or a hex editor. It can appear for a number of reasons, such as getting copied to/from a UNIX filesystem...

echo unicode characters

Start a quick rsync daemon for fast copying on internal secure network
"Sample output" shows a minimalistic configuration file.

Mount directories in different locations
Like symlinked directories, you can mount a directory at a different location. For example mounting a directory from one location in to the http root without having to make your program follow symlinks or change permissions when reading.

Find the package that installed a command

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: