π in Bash
AmazingMech2418 (941)

I think I'm pretty much doing pi approximations in every language now, so, here it is in the classic Linux shell: Bash!

Here are the other approximations so far:
Kotlin - https://repl.it/talk/share/p-in-Kotlin/36125
Ruby - https://repl.it/talk/share/p-in-Ruby/34982
Java - https://repl.it/talk/share/p-in-Java/34978
QBasic - https://repl.it/talk/share/p-in-QBasic/34973
Fortran - https://repl.it/talk/share/p-in-Fortran/34890
APL - https://repl.it/talk/share/p-in-APL/34888
Forth - https://repl.it/talk/share/p-in-Forth/34652
LOLCODE - https://repl.it/talk/share/p-in-LOLCODE/34421
Python and Node.js (Node is linked in post) - https://repl.it/talk/share/2-Approximations-of-p-In-Only-Four-Lines-of-Code/32773
C - https://repl.it/talk/share/p-Approximations-in-C/33461

Credit to @NoelBryan, @TheForArkLD , @Warhawk947 , and @LizFoster for inspiring these approximations. Most of these use the Nilakantha Series, although I also use the arctangent method (multiplying the radian arctangent of 1 by 4 to get pi and getting the arctangent with an infinite series) in three of them (Python, Node, and C).

Note: Bash is SLOW

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Code1Tech (88)

its so funny how u can delete the main.sh file without forking lol
i used a bash cmd called rm (rm main.sh) so easy lol

AmazingMech2418 (941)

@Code1Tech You can do that in any repls. You can use os.system in Python for example.

AmazingMech2418 (941)

@Code1Tech It is not a defense system... It's just a repl. It has a Bash command line and only saves temporarily on your version of the repl.

Code1Tech (88)

ik its just ive never done that
@AmazingMech2418

AmazingMech2418 (941)

@Code1Tech I've done it many times. LOL! It's fun when you can hack a Tic-Tac-Toe game by making a copy of the source code and piping it into the repl using the curl command.

Code1Tech (88)

i tried deleting runner using -f.. it said -f isnt a thing.. could you help me? i started using bash yesterday lol.
@AmazingMech2418

AmazingMech2418 (941)

@Code1Tech rmdir is what you need, but I don't think you have access to delete that directory.

Code1Tech (88)

i did use look at the picture ^^
@AmazingMech2418

Code1Tech (88)

hmmm i tried but it says no permission. the only choice is to make a fake runner using mkdir and del that (lol.) but i have seen people delete runner.. @AmazingMech2418

Code1Tech (88)

oof cant even make a fake dir next to the real one.
@AmazingMech2418

Code1Tech (88)

omg i just deleted _test_runner.py
(i didnt know bash runs on python.. prob bc it might be written in python bc its a shell)

@AmazingMech2418