myShell

Detailed project descrtiption can be found here.

Manuals to Run myShell in Linux

myShell can be started by running:

• make
• ./myshell

Implementation Details

• The executables in the path (including aliases) are executed in fork exec manner and exit, bello, redirections and backgrounding are executed via functions.
• Commands can have arguments.
• Exit command is implemented together with checking for background processes. If any, exit prevented.
• Background processing (&), and redirection operators (">" and "> >") exist and achieve the same task as in bash or zsh.
• Users are able to create alias by entering the command this way:
  • alias alias_name = "command_name command_args"
  • Aliases are saved and valid even after a restart of the shell.
• A new re-redirection operator ("> > >") (no spaces) exists. This operator acts exactly as ("> >"), but the order of all letters in the output will be invested.
• The "bello" command is displaying eight information items about the user, respectively:
  1. Username
  2. 2. Hostname
  3. Last Executed Command : last input from user is shown
  4. TTY
  5. Current Shell Name (not myshell)
  6. Home Location
  7. Current Time and Date
  8. Current number of proccesses being executed: processes under myshell are count. Bello, ps and myshell is included.