README.md

fin /fɪn/

Short for Griffin and pronounced Finn

fin is a simply made Unix shell written in C

What You Need

GNU GCC

How to build it

$ make

What it Does

Builtin commands

Command	Usage	Description
cd	cd [dir]	Change the current directory. Defaults to $HOME.
echo	echo [args ...]	Write arguments to standard output.
exit	exit [code]	Exit the shell with an optional exit code.
get	get VAR ...	Print the value of one or more environment variables.
help	help [cmd]	List builtin commands, or show help for a specific command.
set	set VAR=VAL ...	Set one or more environment variables.

Piping

Connect commands with | to pipe the output of one into the input of the next.

Redirecting

Redirect input and output with <, >, and >>.

Examples

$ ./fin
𝑓 set GREETING=hello
𝑓 get GREETING
hello
𝑓 echo fin is cool
fin is cool
𝑓 echo fin is cool > fin.txt
𝑓 echo fin is also fun >> fin.txt
𝑓 cat fin.txt
fin is cool
fin is also fun
𝑓 grep cool < fin.txt
fin is cool
𝑓 ls | grep fin
fin
fin.c
fin.txt
𝑓 exit