All commands (14,187)

  • find all email addresses in a file, printing each match. Addresses do not have to be alone on a line etc. For example you can grab them from HTML-formatted emails or CSV files, etc. Use a combination of ...|sort|uniq$ to filter them. Show Sample Output


    3
    grep -Eio '([[:alnum:]_.]+@[[:alnum:]_]+?\.[[:alpha:].]{2,6})' file.html
    wires · 2009-06-16 20:19:47 9
  • Search for the string "search" and replace it with the string "replace", on all files with the extension php in the curret folder. Do also a backup of each file with the extension "bkp".


    4
    ruby -i.bkp -pe "gsub(/search/, 'replace')" *.php
    gustavgans · 2009-06-16 12:35:40 6
  • 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. Show Sample Output


    3
    perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'
    obscurite · 2009-06-16 06:39:08 6
  • This command will open up the two files in FileMerge on OS X. You can also compare two directories. opendiff directory1 directory2 NOTE: FileMerge is a part of the OS X Developer Tools, available on the install disc.


    -3
    opendiff <file1> <file2>
    claytron · 2009-06-16 03:22:52 7
  • Tells sort to ignore all characters before the Xth position in the first field per line. If you have a list of items one per line and want to ignore the first two characters for sorting purposes, you would type "sort -k1.3". Change the "1" to change the field being sorted. The decimal value is the offset in the specified field to sort by.


    3
    sort -k1.x
    leper421 · 2009-06-16 00:04:21 7
  • If you're users have ever asked your script to email their reports in separate attachments instead of tar'ring them into one file, then you can use this. You'll need the mailx package of course. In Unix you'd want to add an additional parameter "-m" (uuencode foo.txt foo.txt; uuencode /etc/passwd passwd.txt)|mailx -m -s "Hooosa!" someone@cmdfu.com


    1
    (uuencode foo.txt foo.txt; uuencode /etc/passwd passwd.txt)|mailx -s "Pandaren!" someone@cmdfu.com
    LrdShaper · 2009-06-15 11:34:51 7
  • Uses process signal to play next selection


    1
    killall -2 mpg321
    dattaway · 2009-06-15 03:04:00 6
  • Pressing ESC then * will insert in the command line the results of the autocompletion. It's hard to explain but if you look the sample output or do echo ESC * you will understand quickly. By the way, few reminders about ESC : - Hold ESC does the same thing as tab tab - 'ESC .' inserts the last argument of last command (can be done many times in order to get the last argument of all previous commands) Show Sample Output


    67
    ESC *
    Josay · 2009-06-14 21:17:40 53
  • curl doesn't provide url-encoding for 'GET' data, it have an option '--data-urlencode', but its only for 'POST' data. Thats why I need to write down this commandline. With 'perl', 'php' and 'python', this is one liner, but just I wrote it for fun. Works in Ubuntu, will work in all linux varients(I hope it will work in unix varients also). Show Sample Output


    -3
    (Command too long..See sample Output..)
    mohan43u · 2009-06-14 20:34:37 136
  • This will extract all of the urls from a firefox session (including urls in a tab's history). The sessionstore.js file is in ~/.mozilla/firefox/{firefox profile}


    2
    sed -e "s/\[{/\n/g" -e "s/}, {/\n/g" sessionstore.js | grep url | awk -F"," '{ print $1 }'| sed -e "s/url:\"\([^\"]*\)\"/\1/g" -e "/^about:blank/d" > session_urls.txt
    birnam · 2009-06-14 15:08:31 11
  • Share your "now playing" Amarok song in twitter!


    6
    curl -u <user>:<password> -d status="Amarok, now playing: $(dcop amarok default nowPlaying)" http://twitter.com/statuses/update.json
    caiosba · 2009-06-14 02:42:34 6
  • Simple way to achieve a colored SVN diff


    16
    svn diff <file> | vim -R -
    caiosba · 2009-06-13 22:00:49 69

  • 4
    mysql -uadmin -p` cat /etc/psa/.psa.shadow` -Dpsa -e"select mail_name,name,password from mail left join domains on mail.dom_id = domains.id inner join accounts where mail.account_id = accounts.id;"
    BADmd · 2009-06-13 21:19:18 4
  • Obviously, you can replace 'man' command with any command in this command line to do useful things. I just want to mention that there is a way to list all the commands which you can execute directly without giving fullpath. Normally all important commands will be placed in your PATH directories. This commandline uses that variable to get commands. Works in Ubuntu, will work in all 'manpage' configured *nix systems. Show Sample Output


    4
    find `echo "${PATH}" | tr ':' ' '` -type f | while read COMMAND; do man -f "${COMMAND##*/}"; done
    mohan43u · 2009-06-13 19:56:24 6
  • You can convert any UNIX man page to .txt


    15
    man ls | col -b > ~/Desktop/man_ls.txt
    vigo · 2009-06-13 11:49:33 18
  • It's also possible to delay the extraction (echo "unrar e ... fi" |at now+20 minutes) wich is really convenient!


    4
    unrar e file.part1.rar; if [ $? -eq 0 ]; then rm file.part*.rar; fi
    mrttlemonde · 2009-06-13 11:11:43 7
  • Yes, it's useless.


    4
    a=`printf "%*s" 16`;b=${a//?/{0..1\}}; echo `eval "echo $b"`
    rhythmx · 2009-06-13 06:32:35 5
  • Chronic Bash function: chronic 3600 time # Print the time in your shell every hour chronic 60 updatedb > /dev/null # update slocate every minute Note: use 'jobs' to list background tasks and fg/bg to take control of them.


    3
    chronic () { t=$1; shift; while true; do $@; sleep $t; done & }
    rhythmx · 2009-06-13 05:57:54 16
  • You can flexibly change file pattern(*.tar.gz) and uncompress command to other job! Example, remove all files : for i in *.tar.gz; do rm $i; done (Just for example, because if you really want to remove file, simply use wildcard like this rm *.tar.gz)


    0
    for i in *.tar.gz; do tar -xzf $i; done
    kureikain · 2009-06-13 03:58:48 11

  • 0
    egrep -r '(render_message|multipart).*('`find app/views -name '*.erb' | grep mailer | sed -e 's/\..*//' -e 's/.*\///' | uniq | xargs | sed 's/ /|/g'`')' app/models
    foobarfighter · 2009-06-12 18:53:29 5
  • Find statistics for an Edirectory server form LDAPsearch. We have a lot more examples at: http://ldapwiki.willeke.com/wiki/Ldapsearch%20Examples The full command got shut off it is: ldapsearch -h ldapserver.willeke.com -p636 -e C:\mydata\treerootcert.der -b "" -s base -D cn=admin,ou=administration,dc=willeke,dc=com -w secretpwd "(objectclass=*)" chainings removeEntryOps referralsReturned listOps modifyRDNOps repUpdatesIn repUpdatesOut strongAuthBinds addEntryOps compareOps wholeSubtreeSearchOps modifyEntryOps searchOps errors simpleAuthBinds inOps oneLevelSearchOps inBytes abandonOps bindSecurityErrors securityErrors unAuthBinds outBytes extendedOps readOps dsaName directoryTreeName vendorVersion vendorName Show Sample Output


    1
    ldapsearch -h ldapserver.willeke.com -p389 -b "" -s base -D cn=admin,ou=administration,dc=willeke,dc=com -w secretpwd "(objectclass=*)" chainings removeEntryOps referralsReturned listOps modifyRDNOps repUpdatesIn repUpdatesOut strongAuthBinds addEntryOps
    jwilleke · 2009-06-12 13:28:18 4
  • Performs a mysqldump and gzip-compresses the output file with a timestamp in the resulting dump file. Inspect the file for integrity or fun with this command afterward, if you desire: zcat mysqldump-2009-06-12-07.41.01.tgz | less Show Sample Output


    1
    mysqldump [options] |gzip ->mysqldump-$(date +%Y-%m-%d-%H.%M.%S).gz
    linuxrawkstar · 2009-06-12 12:42:59 6
  • I've been auto-generating some complex GnuPlots; with multiplots the first plot of each group needs to be a 'plot' whereas the others need to be 'replots' to allow overplotting/autoscaling/etc to work properly. This is used to replace only the first instance of 'replot'. Show Sample Output


    5
    sed '/MARKER/{N;s/THIS/THAT/}'
    mungewell · 2009-06-12 02:29:50 4
  • command | my_irc Pipe whatever you want to this function, it will, if everything goes well, be redirected to a channel or a user on an IRC server. Please note that : - I am not responsible of flood excesses you might provoke. - that function does not reply to PINGs from the server. That's the reason why I first write in a temporary file. Indeed, I don't want to wait for inputs while being connected to the server. However, according to the configuration of the server and the length of your file, you may timeout before finishing. - Concerning the server, the variable content must be on the form "irc.server.org 6667" (or any other port). If you want to make some tests, you can also create a fake IRC server on "localhost 55555" by using netcat -l -p 55555 - Concerning the target, you can choose a channel (beginning with a '#' like "#chan") or a user (like "user") - The other variables have obvious names. Show Sample Output


    1
    function my_irc { tmp=`mktemp`; cat > $tmp; { echo -e "USER $username x x :$ircname\nNICK $nick\nJOIN $target"; while read line; do echo -e "PRIVMSG $target :$line"; done < $tmp; } | nc $server > /dev/null ; rm $tmp; }
    Josay · 2009-06-11 22:14:48 7
  • Nice reading in the morning on the way to work, but sadly the .tar.gz for the whole issue 66 is not on phrack's website yet. So use wget to download.


    2
    mkdir phrack66; (cd phrack66; for n in {1..17} ; do echo "http://www.phrack.org/issues.html?issue=66&id=$n&mode=txt" ; done | xargs wget)
    masterofdisaster · 2009-06-11 21:42:42 5
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check open ports without netstat or lsof

Alias HEAD for automatic smart output
Run the alias command, then issue $ps aux | head and resize your terminal window (putty/console/hyperterm/xterm/etc) then issue the same command and you'll understand. $ ${LINES:-`tput lines 2>/dev/null||echo -n 12`} Insructs the shell that if LINES is not set or null to use the output from `tput lines` ( ncurses based terminal access ) to get the number of lines in your terminal. But furthermore, in case that doesn't work either, it will default to using the deafault of 12 (-2 = 10). The default for HEAD is to output the first 10 lines, this alias changes the default to output the first x lines instead, where x is the number of lines currently displayed on your terminal - 2. The -2 is there so that the top line displayed is the command you ran that used HEAD, ie the prompt. Depending on whether your PS1 and/or PROMPT_COMMAND output more than 1 line (mine is 3) you will want to increase from -2. So with my prompt being the following, I need -7, or - 5 if I only want to display the commandline at the top. ( https://www.askapache.com/linux/bash-power-prompt/ ) 275MB/748MB [7995:7993 - 0:186] 06:26:49 Thu Apr 08 [askapache@n1-backbone5:/dev/pts/0 +1] ~ $ In most shells the LINES variable is created automatically at login and updated when the terminal is resized (28 linux, 23/20 others for SIGWINCH) to contain the number of vertical lines that can fit in your terminal window. Because the alias doesn't hard-code the current LINES but relys on the $LINES variable, this is a dynamic alias that will always work on a tty device.

Speak the top 6 lines of your twitter timeline every 5 minutes.....
Pump up the chatter, run this script on a regular basis to listen to your twitter timeline. This is a rough first cut using several cli clips I have spotted around. There is no facility to not read those things already read to you. This could also easily be put in a loop for timed onslaught from the chatterverse, though I think it might violate several pointsof the Geneva Convention UPDATE - added a loop, only reads the first 6 twits, and does this every 5 mins.

Compute the numeric sum of a file
In the file data.txt there is a single column of numbers. Sed adds a "+" between lines and xargs prepares the output for bc. The "echo 0" is to avoid to have a "+" at the beginning of the line.

Find all directories on filesystem containing more than 99MB
Finds all directories containing more than 99MB of files, and prints them in human readable format. The directories sizes do not include their subdirectories, so it is very useful for finding any single directory with a lot of large files.

Copy a file using pv and watch its progress
pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA. (man pv)

Perform sed substitution on all but the last line of input
In this simple example the command will add a comma to the end of every line except the last. I found this really useful when programatically constructing sql scripts. See sample output for example.

Command line progress bar
This command tar?s up a directory and sends the output to gzip, showing a rate of 223MB/s. This may require you installing the pv command. For debian based users out there: $ sudo aptitude install pv

Makes a Zenity select list based on entries in your wpa_supplicant.conf
If you still connect to your wireless access point manually and need to use wpa_supplicant, the above fu will grep all of the known SSID from your wpa_supplicant.conf file, present it in a Zenity list and return the SSID name you choose. I've wrapped this command in to a bash script that then up's the interface, associates and autenticates. Saves me from using NetworkManager ;)

Load file into RAM (cache) for faster accessing for repeated usage
Best result when file size less than half of RAM size


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