myshell

Implementation of bash shell in C, for the Operating System Course in HKU.

Development Platform

• 64-bit ubuntu 14.04 LTS
• gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4

Usage

• Compilation: gcc src/myshell.c -o myshell -Wall
• Run: ./myshell

Enabled Functionalities

• Commands in /bin:/usr/bin
• pipe
• background mode
• timeX: a built-in function for counting execution time, support pipe and foreground commands. For instance, timeX ls -l | wc

Blocked Functionalities

• SIGINT signal in myshell. You cannot exit this program using SIGINT signal. Use exit instead.

Disabled or Unimplemented Functionalities

• cd: changing folder is not supported in myshell