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
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optipng and advancecomp (for the the advpng and advdef tools) are the best FOSS tools for losslessly compressing PNGs. With the above tool chain, you can cut off as much as 20% off a PNG's file size.

View any already in progress copy command in detail
If you spot a dubious looking cp command running you can use this command to view what is being copied and to where. 1234 is the PID of the cp command being passed to the lsof utility. 3r.*REG will display the file/directory that is being read/copied. 4w.*REG will display the destination it is being written to.

format txt as table not joining empty columns
-n switch keeps empty columns If your distribution does not ship with a recent column version that supports -n you can use this alternative: perl -pe 's/(^|;);/$1 ;/g' file.csv | column -ts\; | less -S Change the delimiter to your liking.

Recompress all .gz files in current directory using bzip2 running 1 job per CPU core in parallel

Create a backdoor on a machine to allow remote connection to bash
My netcat (nc-1.84-10.fc6) doesn't have the -e option, so I have to do it like this. Of course, instead of bash, you can use any executable, including scripts.

run command on a group of nodes in parallel redirecting outputs
Do the same as pssh, just in shell syntax. Put your hosts in hostlist, one per line. Command outputs are gathered in output and error directories.

continuously print string as if being entered from the keyboard
Cycles continuously through a string printing each character with a random delay less than 1 second. First parameter is min, 2nd is max. Example: 1 3 means sleep random .1 to .3. Experiment with different values. The 3rd parameter is the string. The sleep will help with battery life/power consumption. $ cycle 1 3 $(openssl rand 100 | xxd -p) Fans of "The Shining" might get a kick out of this: $ cycle 1 4 ' All work and no play makes Jack a dull boy.'

Mirror the NASA Astronomy Picture of the Day Archive
Mirror the entire NASA Astronomy Picture of the Day archive, all the way from 1995. The archive is close to 2.5 GB, with lots of files, so give it some time. The logs can be redirected to a file using '-o somefile'. You might also want to try '-nH' and the '--cut-dirs' options

whowatch: Linux and UNIX interactive, process and users monitoring tool
whowatch is a interactive, ncurses-based, process and users monitoring tool, which updates information in real time. This is a perfect tool for local and remote servers. It displays information about the users currently logged on to the machine, in real-time. Besides standard information (login name, tty, host, user's process), the type of the connection (ie. telnet or ssh) is shown. Display of users command line can be switch to tty idle time. Certain user can be selected and his processes tree may be viewed as well as tree of all system processes. Tree may be displayed with additional column that shows owner of each process. In the process tree mode SIGINT and SIGKILL signals can be sent to the selected process. Killing processes is just as simple and fun as deleting lines on the screen.

Count git commits since specific commit

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