Commands tagged fun (14)

  • When feeling down, this command helps

    sudo apt-get install sl man sl


    26
    sl
    Svish · 2009-04-19 15:24:03 11
  • synchronicity

    The British Government entering in the Gregorian era. Show Sample Output


    10
    cal 09 1752
    flux · 2009-04-22 00:13:19 4
  • let a cow tell you your fortune


    8
    fortune | cowsay
    CodSpirit · 2010-05-31 13:23:39 0
  • Have a smile

    Outputs utf-8 smileys Show Sample Output


    5
    printf "$(awk 'BEGIN{c=127;while(c++<191){printf("\xf0\x9f\x98\\%s",sprintf("%o",c));}}')"
    ichbins · 2022-04-06 12:10:37 0
  • display a smiling smiley if the command succeeded and a sad smiley if the command failed

    you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;) Show Sample Output


    4
    <commmand>; if [[ "$?" = 0 ]]; then echo ':)'; else echo ':('; fi
    potatoface · 2010-08-23 20:35:31 1
  • Safe Russian Roulette (only echo, don't delete files)

    Shows "Bang!" in a chance of 1 out of 6, like in the original game with the gun (spin every round). Otherwise, echoes "Click...". If feeling brave you can also do: [ $[ $RANDOM % 6 ] == 0 ] && echo 'Bang!' && a really killer command || echo 'Click...' Show Sample Output


    4
    [ $[ $RANDOM % 6 ] == 0 ] && echo 'Bang!' || echo 'Click...'
    paulera · 2016-03-23 11:09:56 0
  • Labyrinth pattern

    Generates labyrinth-like pattern on UTF-8 terminal in bash. For fun ;) Show Sample Output


    3
    while ( true ) ; do if [ $(expr $RANDOM % 2 ) -eq 0 ] ; then echo -ne "\xE2\x95\xB1" ; else echo -ne "\xE2\x95\xB2" ; fi ; done
    tobi · 2015-01-17 12:46:37 3
  • let a cow tell you your fortune


    1
    cowsay $(fortune)
    mandroid · 2010-05-31 12:47:06 0
  • skipping five lines, at top, then at bottom

    Strangely enough, there is no option --lines=[negative] with tail, like the head's one, so we have to use sed, which is very short and clear, you see. Strangely more enough, skipping lines at the bottom with sed is not short nor clear. From Sed one liner : # delete the last 10 lines of a file $ sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1 $ sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2 Show Sample Output


    0
    seq 1 12 | sed 1,5d ; seq 1 12 | head --lines=-5
    flux · 2009-08-01 00:41:52 3
  • let a cow tell you your fortune

    Let Tux bring the fortune cookie


    0
    fortune | cowsay -f tux
    Zaphod · 2010-06-01 09:04:01 0
  • Play Lisp Snake in Emacs


    0
    emacs -f snake
    steadystatic · 2015-11-03 23:34:57 0
  • Combo matrix

    This is longer than others on here. The reason for this is I have combined two different matrix commands so it would work on all computers. I logged onto my server through a computer and it worked fine. I logged into my server through a mac and it looked $4!t so I have made one that works through both. Show Sample Output


    -1
    echo -e "CHECK=SAMPLE" output --command_to_long
    techie · 2013-04-03 08:46:47 1
  • Firefly quotes


    -3
    yum install fortune-firefly; fortune
    madrasi · 2011-01-26 04:32:03 0
  • figlet


    -6
    figlet -f roman message
    ekinertac · 2013-04-23 02:25:39 0

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Rotate a video file by 90 degrees CW

cleanup /tmp directory
Cleans all files in /tmp that have been accessed at least 2 days ago.

find out how many days since given date
You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though.

draw matrix using dot

Have your sound card call out elapsed time.
Useful contexts : You are doing yoga or some other physical training in which you are holding a position. Or you practice the pomodoro productivity technique. Or your girlfriend said "We're leaving in 40 minutes". Design details: sleep executes before espeak to give you a 5 seconds head start. espeak is run in the background so it doesn't mess up the timing.

get ip of all running docker containers
pretty self explanitory

Backup files older than 1 day on /home/dir, gzip them, moving old file to a dated file.
Useful for backing up old files, custom logs, etc. via a cronjob.

Run TOP in Color, split 4 ways for x seconds - the ultimate ps command. Great for init scripts
One of my favorite ways to impress newbies (and old hats) to the power of the shell, is to give them an incredibly colorful and amazing version of the top command that runs once upon login, just like running fortune on login. It's pretty sweet believe me, just add this one-liner to your ~/.bash_profile -- and of course you can set the height to be anything, from 1 line to 1000! $ G=$(stty -g);stty rows $((${LINES:-50}/2));top -n1; stty $G;unset G Doesn't take more than the below toprc file I've added below, and you get all 4 top windows showing output at the same time.. each with a different color scheme, and each showing different info. Each window would normally take up 1/4th of your screen when run like that - TOP is designed as a full screen program. But here's where you might learn something new today on this great site.. By using the stty command to change the terminals internal understanding of the size of your terminal window, you force top to also think that way as well. # save the correct settings to G var. $ G=$(stty -g) # change the number of rows to half the actual amount, or 50 otherwise $ stty rows $((${LINES:-50}/2)) # run top non-interactively for 1 second, the output stays on the screen (half at least) $ top -n1 # reset the terminal back to the correct values, and clean up after yourself $ stty $G;unset G This trick from my [ http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html bash_profile ], though the online version will be updated soon. Just think what else you could run like this! Note 1: I had to edit the toprc file out due to this site can't handle that (uploads/including code). So you can grab it from [ http://www.askapache.com/linux-unix/bash-power-prompt.html my site ] Note 2: I had to come back and edit again because the links weren't being correctly parsed

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

archlinux:Delete packages from pacman cache that are older than 7 days
Sometimes my /var/cache/pacman/pkg directory gets quite big in size. If that happens I run this command to remove old package files. Packages that we're upgraded in last N days are kept in case you are forced to downgrade a specific package. The command is obviously Arch Linux related.

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