Linux Shell

Our Linux shell supports all Linux commands and a few extra commands.

Requirements

use the following command to install readline library before running the shell:

sudo apt-get install libreadline-dev

Run

gcc shell.c -lreadline
./a.out

List of additional commands

• fs → prints the first string of each line of input file

• mw → prints the most frequent word in file

• rs → removes empty spaces from file

• rmc → prints uncommented lines of file

• lc → prints the number of file lines

• ft → prints first ten lines of file

Usage

All additional commands are used this way:

[command] [file path]

For example if test file be as follows:

Good morning
hi ali
hello world

The result will be:

fs /Desktop/test.txt
Good
hi
hello

Features

• Save commands in history

• User can switch between commands that saved in history and choose one of them

• Support pipeline commands

• Fork new process for every command

• Print errors using stderr

• Customize control-c action