Simple CLI

A simple implementation of Unix-like shell, supports various commands and operators. Developed in Java.

Featured Commands and Operators

1. Commands

• pwd Print the current working directory.
• cd Change working directory to a specified path.
• ls List files in the current directory, can take extra options as arguments:
  • -a Include hidden files.
  • -r Reverse order listing.
• touch Create a file with each given name or update its last modification time.
• rm Delete each given file.
• echo Write text to the shell.
• cat Concatenates the content of each given file and prints it. if cat got no arguments, it will take input from user and print it to the shell.
• mkdir Create a directory for each given name.
• rmdir Deletes each given directory, only if it is empty.
• mv: Move/rename files or directories.

2. Operators

• >: Redirect the output of the first command to be written to a file. (creates file if it doesn't exist)
• >>: Redirect the output of the first command to be appended to a file. (works only if file exists)
• |: Redirect the output of the left command as in input to the right command.

3. Internal Commands

• exit: Terminate the shell.
• help: List all supported commands and how to use them.