aaqibb13 / gosh

Gosh is a toy shell written in Go.

gosh

Gosh is a shell written in Go.

Rationale behind the shell

The idea was to mimic the behaviour of a shell like bash or zsh at least to a certain degree. The behaviour involved understanding how a shell runs. If you know about REPL (Read Eval Print Loop), you probably know what I'm talking about. So, I wanted this command line tool to run in a loop which keeps running until it's either stopped via a command like exit or interrupted by a signal like SIGINT

The execution starts from the cmd/main.go where Run() is called, the responsibility is then passed to the CommandParse() function. The input to the function is the command which is to be executed. The command is parsed (extra white spaces are removed, arguments splitted), the corresponding command is then invoked (only the ones that the tool supports). Furthermore, the splitted arguments are then passed to the CommandExecutor() where the corresponding command is executed. In CommandExecutor(), the commands are executed using os/exec package.

Note: The tool works for darwin only

The list of commands that the tool currently supports are:

1. pwd
2. ls (with flags)
3. exit

Examples of command snippets are:

Example One:

Example Two: