20 Commands/programs For Linux – Have Fun In Terminal !

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Linux is fun! Huhhh. OK so you don’t believe me. Mind me at the end of this article you will have to believe that Linux is actually a fun box. here is the 20 commands or programs for linux and its fun.


1. Command: sl (Steam Locomotive)

You might be aware of command ‘ls‘ the list command and use it frequently to view the contents of a folder but because of miss-typing sometimes you would result in ‘sl‘, how about getting a little fun in terminal and not “command not found“.

Install sl

root@tecmint:~# apt-get install sl   (In Debian like OS)
root@tecmint:~# yum -y install sl (In Red Hat like OS)

Output

root@tecmint:~# sl

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sl command


This command works even when you type ‘LS‘ and not ‘ls‘.


2. Command: telnet

No! No!! it is not as much complex as it seems. You would be familiar with telnet. Telnet is a text-oriented bidirectional network protocol over network. Here is nothing to be installed. What you should have is a Linux box and a working Internet.

root@tecmint:~# telnet towel.blinkenlights.nl

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telnet command


3. Command: fortune

what about getting your random fortune, sometimes funny in terminal.

Install fortune

root@tecmint:~# apt-get install fortune  (for aptitude based system)
root@tecmint:~# yum install fortune (for yum based system)
root@tecmint:~# fortune

You're not my type. For that matter, you're not even my species!!!
Future looks spotty. You will spill soup in late evening.
You worry too much about your job. Stop it. You are not paid enough to worry.
Your love life will be... interesting.


4. Command: rev (Reverse)

It reverse every string given to it, is not it funny.

root@tecmint:~# rev

123abc
cba321

xuniL eb ot nrob
born to be Linux


5. Command: factor

Time for some Mathematics, this command output all the possible factors of a given number.

root@tecmint:~# factor

5
5: 5

12
12: 2 2 3

1001
1001: 7 11 13

5442134
5442134: 2 2721067


6. Command: script

OK fine this is not a command and a script but it is nice.

root@tecmint:~# for i in {1..12}; do for j in $(seq 1 $i); do echo -ne $i×$j=$((i*j))t;done; echo;done 

1×1=1
2×1=2 2×2=4
3×1=3 3×2=6 3×3=9
4×1=4 4×2=8 4×3=12 4×4=16
5×1=5 5×2=10 5×3=15 5×4=20 5×5=25
6×1=6 6×2=12 6×3=18 6×4=24 6×5=30 6×6=36
7×1=7 7×2=14 7×3=21 7×4=28 7×5=35 7×6=42 7×7=49
8×1=8 8×2=16 8×3=24 8×4=32 8×5=40 8×6=48 8×7=56 8×8=64
9×1=9 9×2=18 9×3=27 9×4=36 9×5=45 9×6=54 9×7=63 9×8=72 9×9=81
10×1=10 10×2=20 10×3=30 10×4=40 10×5=50 10×6=60 10×7=70 10×8=80 10×9=90 10×10=100
11×1=11 11×2=22 11×3=33 11×4=44 11×5=55 11×6=66 11×7=77 11×8=88 11×9=99 11×10=110 11×11=121
12×1=12 12×2=24 12×3=36 12×4=48 12×5=60 12×6=72 12×7=84 12×8=96 12×9=108 12×10=120 12×11=132 12×12=144


7. Command: Cowsay

An ASCII cow in terminal that will say what ever you want.


Install Cowsay

root@tecmint:~# apt-get install cowsay   (for Debian based OS)
root@tecmint:~# yum install cowsay (for Red Hat based OS)

Output

root@tecmint:~# cowsay I Love nix 

____________
< I Love nix >
------------
^__^
(oo)_______
(__) )/
||----w |
|| ||

How about pipelineing ‘fortune command‘, described above with cowsay?

root@tecmint:~# fortune | cowsay 

_________________________________________
/ Q: How many Oregonians does it take to
| screw in a light bulb? A: Three. One to |
| screw in the light bulb and two to fend |
| off all those |
| |
| Californians trying to share the |
experience. /
-----------------------------------------
^__^
(oo)_______
(__) )/
||----w |
|| ||

Note: ‘|‘ is called pipeline instruction and it is used where the output of one command needs to be the input of another command. In the above example the output of ‘fortune‘ command acts as an input of ‘cowsay‘ command. This pipeline instruction is frequently used in scripting and programming.

xcowsay is a graphical program which response similar to cowsay but in a graphical manner, hence it isX of cowsay.

apt-get insatll xcowsay
yum install xcowsay

Output

root@tecmint:~# xcowsay I Love nix

linux-fun-commands/programs- picateshackz.com

xcowsay command


cowthink is another command just run “cowthink Linux is sooo funny” and see the difference in output of cowsay and cowthink.

apt-get insatll cowthink
yum install cowthink

Output

root@tecmint:~# cowthink ....Linux is sooo funny
_________________________
( ....Linux is sooo funny )
-------------------------
o ^__^
o (oo)_______
(__) )/
||----w |
|| ||


8. Command: yes

It is funny but useful as well, specially in scripts and for System Administrators where an automated predefined response can be passed to terminal or generated.

root@tecmint:~# yes I Love Linux

I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux
I Love Linux

Note: (Till you interrupt i.e ctrl+c).

9. Command: toilet

what? Are u kidding, huhh no! Definitely not, but for sure this command name itself is too funny, and I don’t know from where this command gets it’s name.

Install toilet

root@tecmint:~# apt-get install toilet 
root@tecmint:~# yum install toilet

Output

root@tecmint:~# toilet tecmint 

mmmmmmm " m
# mmm mmm mmmmm mmm m mm mm#mm mmm mmm mmmmm
# #" # #" " # # # # #" # # #" " #" "# # # #
# #"""" # # # # # # # # # # # # # #
# "#mm" "#mm" # # # mm#mm # # "mm # "#mm" "#m#" # # #

It even offers some kind of color and fonts style.

root@tecmint:~# toilet -f mono12 -F metal Tecmint.com

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toilet command

Note: Figlet is another command that more or less provide such kind of effect in terminal.


10. Command: cmatrix

You might have seen Hollywood movie ‘matrix‘ and would be fascinated with power, Neo was provided with, to see anything and everything in matrix or you might think of an animation that looks alikeHacker‘s desktop.


Install cmatrix

root@tecmint:~# apt-get install cmatrix
root@tecmint:~# yum install cmatrix

Output

root@tecmint:~# cmatrix

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cmatrix command


11. Command: oneko

OK so you believe that mouse pointer of Linux is the same silly black/white pointer where no animation lies then I fear you could be wrong. “oneko“ is a package that will attach a “Jerry“ with you mouse pointer and moves along with you pointer.


Install cmatrix

root@tecmint:~# apt-get install oneko
root@tecmint:~# yum install oneko

Output

root@tecmint:~# oneko

linux-fun-commands/programs- picateshackz.com


oneko command

Note: Once you close the terminal from which oneko was run, jerry will disappear, nor will start at start-up. You can add the application to start up and continue enjoying.


12. Fork Bomb

This is a very nasty piece of code. Run this at your own risk. This actually is a fork bomb which exponentially multiplies itself till all the system resource is utilized and the system hangs. (To check the power of above code you should try it once, but all at your own risk, close and save all other programs and file before running fork bomb).

root@tecmint:~# :(){ :|:& }: 

13. Command: while

The below “while” command is a script which provides you with colored date and file till you interrupt (ctrl + c). Just copy and paste the below code in terminal.

root@tecmint:~# while true; do echo "$(date '+%D %T' | toilet -f term -F border --gay)"; sleep 1; done

linux-fun-commands/programs- picateshackz.com


Linux while command

Note: The above script when modified with following command, will gives similar output but with a little difference, check it in your terminal.

root@tecmint:~# while true; do clear; echo "$(date '+%D %T' | toilet -f term -F border --gay)"; sleep 1; done


14. Command: espeak

Just Turn the Knob of your multimedia speaker to full before pasting this command in your terminal and let us know how you felt listening the god’s voice.
Install espeak

root@tecmint:~# apt-get install espeak
root@tecmint:~# yum install espeak

Output

root@tecmint:~# espeak "Tecmint is a very good website dedicated to Foss Community"


15. Command: aafire

How about fire in your terminal. Just type “aafire” in the terminal, without quotes and see the magic. Press any key to interrupt the program.
Install aafire

root@tecmint:~# apt-get install libaa-bin

Output

root@tecmint:~# aafire

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aafire command


16. Command: bb

First install “apt-get insatll bb” and then, type “bb” in terminal and see what happens.

root@tecmint:~# bb

linux-fun-commands/programs- picateshackz.com


bb command


17. Command: url

Won’t it be an awesome feeling for you if you can update you twitter status from command line in front of your friend and they seems impressed. OK just replace username, password and your status message with your’s username, password and “your status message“.

root@tecmint:~# url -u YourUsername:YourPassword -d status="Your status message" http://twitter.com/statuses/update.xml


18. ASCIIquarium

How it will be to get an aquarium in terminal.

root@tecmint:~# apt-get install libcurses-perl
root@tecmint:~# cd /tmp
root@tecmint:~# wget http://search.cpan.org/CPAN/authors/id/K/KB/KBAUCOM/Term-Animation-2.4.tar.gz
root@tecmint:~# tar -zxvf Term-Animation-2.4.tar.gz
root@tecmint:~# cd Term-Animation-2.4/
root@tecmint:~# perl Makefile.PL && make && make test
root@tecmint:~# make install


Install ASCIIquarium

Now Download and Install ASCIIquarium.

root@tecmint:~# cd /tmp
root@tecmint:~# wget http://www.robobunny.com/projects/asciiquarium/asciiquarium.tar.gz
root@tecmint:~# tar -zxvf asciiquarium.tar.gz
root@tecmint:~# cd asciiquarium_1.1/
root@tecmint:~# cp asciiquarium /usr/local/bin
root@tecmint:~# chmod 0755 /usr/local/bin/asciiquarium

And finally run “asciiquarium” or “/usr/local/bin/asciiquarium“ in terminal without quotes and be a part of magic that will be taking place in front of your eyes.

root@tecmint:~# asciiquarium

linux-fun-commands/programs- picateshackz.com


aquarium command


19. Command: funny manpages

First install “apt-get install funny-manpages” and then run man pages for the commands below. Some of them may be 18+, run at your own risk, they all are too funny.

baby
celibacy
condom
date
echo
flame
flog
gong
grope, egrope, fgrope
party
rescrog
rm
rtfm
tm
uubp
woman (undocumented)
xkill
xlart
sex
strfry
root@tecmint:~# man baby


20. Linux Tweaks

It is time for you to have some one liner tweaks.

root@tecmint:~# world

bash: world: not found
root@tecmint:~# touch girls boo** 

touch: cannot touch `girls boo**': Permission denied
root@tecmint:~# nice man woman

No manual entry for woman
root@tecmint:~# ^How did the sex change operation go?^ 

bash: :s^How did the sex change operation go?^ : substitution failed
root@tecmint:~# %blow 

bash: fg: %blow: no such job
root@tecmint:~# make love 

make: *** No rule to make target `love'. Stop.
$ [ whereis my brain?                    
sh: 2: [: missing ]
% man: why did you get a divorce? 
man:: Too many arguments.
% !:say, what is saccharine? 
Bad substitute.
server@localhost:/srv$ (- 
bash: (-: command not found
Linux is sexy: who | grep -i blonde | date; cd ~; unzip; touch; strip; finger; mount; gasp; yes; uptime; umount; sleep (If you know what i mean)

There are certain other but these don’t work on all the system and hence not included in this article. Some of them are man dog , filter, banner, etc.

Have fun, you can say me thanks later 🙂 yup your comment is highly appreciated which encourages us write more. Tell us which command you liked the most. Stay tuned i will be back soon with another article worth reading.

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