Shell-ter - Shell in the Apocalypse

This program is written in C and is designed to help you survive in a post-apocalyptic world by providing essential shell functionalities.

Functionality

Internal Commands

Shell-ter supports several essential commands, including:

cd (change directory)

This command allows you to navigate between directories. The implemented command has the following features:

• If no directory is specified, it prints the current directory.
• If the specified directory is the keyword -, the shell returns to the previous working directory.
• If a valid directory is specified, the shell changes to that directory.

echo

This command prints the provided message on the screen. It also supports environmental variables when prefixed with the symbol $.

clr (clear screen)

This command clears the terminal screen, providing a clean workspace.

quit (exit shell)

This command terminates the Shell-ter shell session, closing the program.

start_monitor

This command starts monitoring the metrics of the running operating system, generated by Prometheus.

stop_monitor

This command stops the monitoring of metrics.

status_monitor

This command displays the current state of the monitored metrics. The metrics shown can be customized by editing the settings.json file.

External Commands

Any command that isn't listed above will be executed as an external command.

Pipes, Background Execution, and I/O Redirection

Shell-ter also allows the use of pipes (using the symbol |), the execution of commands in the background (using the symbol & at the end of the command), and input-output redirection (using the symbols < and >).