letsgogeeky/minishell

minishell

Interesting outputs:

• cat << EOF | wc > out
• cat << EOF << EOF << EOF <Makefile | wc > out
• ls > a > b > c

ls -lah | wc > out.txt <out.txt cat | wc -l

minishell's Issues

FIx input output redirections

Display a prompt to wait for new commands

Error handler for builtins commands

As a minishell user I want to be able to see commands history using Up/Down arrows

Builtins: unset with no options

Implement && and || operator in execution

As a minishell user I want to be able to use `$?` to show the exit status of the most recently executed foreground pipeline

As a minishell user I want to be able to use `>` to redirect output

Implement redirections:

◦ < should redirect input.
◦ > should redirect output.
◦ << should be given a delimiter, then read the input until a line containing the delimiter is seen. However, it doesn’t have to update the history!
◦ >> should redirect output in append mode.

Builtins: export with no options

As a minishell user I want to be able to use `>>` to redirect output in an append mode

tokens that start with escapes should be separate

Builtins: `exit` with no options

As a minishell user I want to be able to create environment variables and use them. `$` should expand the variable and get it's value

Integrate Parser with Lexer

implement single quotes escapes and escape characters

As a minishell user, I want to be able to press Cntrl + C to cancel currently running command without exiting my MassiveShell

Singaaaals!!!

Design command executor

Builtins: echo with option -n

As a minishell user I want to be able to use `<` to redirect input

Implement redirections:

◦ < should redirect input.
◦ > should redirect output.
◦ << should be given a delimiter, then read the input until a line containing the delimiter is seen. However, it doesn’t have to update the history!
◦ >> should redirect output in append mode.

Builtins: cd with only a relative or absolute path

Input redirections: `<<` should be given a delimiter, then read the input until a line containing the delimiter is seen. It DOESN'T have to update the history!

Implement redirections:

◦ < should redirect input.
◦ > should redirect output.
◦ << should be given a delimiter, then read the input until a line containing the delimiter is seen. However, it doesn’t have to update the history!
◦ >> should redirect output in append mode.

Design lexer layout

Design parser layout

Init Project

Builtins: `env` with no options or arguments

Integrate Parser with Executor

Add baselib to the project & update Makefile to build it

Fix memory leaks, norminette, and code cleanup

Builtins: `pwd` with no options

As a minishell user I want to be able to use pipes `|` to redirect output to input of the next command

Search and launch the right executable (based on the PATH variable or using a relative or an absolute path)

refactor executor to use a single struct holding pointers to commands, envp, and pipes

Refactoring