minishell

Simple implementation of Unix bash with pure C

features

• built-in commands
  • echo with -n option
  • cd with absolute or relative path
  • pwd
  • export
  • unset
  • env
  • exit
• prompt depending on PS1 PS2 variables
• commands history
• redirects
• pipes
• evironment variables stored in the hashtable
• exit status $?
• signals
  • ctrl-C
  • ctrl-D
  • ctrl-\
• && and ||
• wilcard * matching

Usage

there is a Makefile for compiling sources to compile binary, you should run make command

$ make
$ ./minishell

examples

1. pipes and child processes

minishell > ls -la | wc -l
      13
minishell > yes | head -n 3
y
y
y

2. redirects

minishell > < input.txt > output.txt cat

3. wildcards

minishell > ls hash**t*le* | cat
hash.c
hashtable.c
hashtable_to_sorted_array.c
insert_hashtable.c
pair.c

4. prompt

minishell > PS1="new_prompt > "
new_prompt > 

5. && and ||

minishell > echo -n "Hello, " && echo "world" || echo "!!!!!!!"
Hello, world