A simple Bash-like shell. Assignment instructions are here.
What is Bash?
Bash is a Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell. First released in 1989, it has been distributed widely as the default login shell for most Linux distributions and Apple's macOS (formerly OS X). A version is also available for Windows 10. It is also the default user shell in Solaris 11.
Bash is a command processor that typically runs in a text window where the user types commands that cause actions. Bash can also read and execute commands from a file, called a shell script. Like all Unix shells, it supports filename globbing (wildcard matching), piping, here documents, command substitution, variables, and control structures for condition-testing and iteration. The keywords, syntax and other basic features of the language are all copied from sh. Other features, e.g., history, are copied from csh and ksh. Bash is a POSIX-compliant shell, but with a number of extensions.
The shell's name is an acronym for Bourne-again shell, a pun on the name of the Bourne shell that it replaces and on the common term "born again".
Get started super quickly:
Full usage instructions
$ ./clash --help Clash - A Simple Bash-Like Shell Usage: ./clash [options] If no arguments are present, then an interactive REPL is started. If a single file name argument is provided, the commands are read from that file. If a "-c" argument is provided, then commands are read from a string. Examples: Start an interactive REPL. ./clash Read and execute commands from a file. ./clash shell-script.sh Read and excute commands from a string. ./clash -c "echo hello world" Read commands from stdin. echo "echo hello from stdin" | ./clash
Copyright (c) Feross Aboukhadijeh and Jake McKinnon