Shell (C++)

A POSIX-compliant shell implementation written in C++.

Features

• Interactive REPL with a custom raw-mode terminal reader
• Command history with up/down arrow navigation
• Tab completion for builtin commands and executables in PATH
• Single-quote, double-quote, and backslash escape handling
• Builtin commands: exit, echo, type, pwd, cd, jobs, history
• Execution of external programs via fork/exec
• Background job execution with &
• Job listing and status tracking
• Persistent command history (loads/saves from HISTFILE)
• PATH and HOME environment resolution
• C++23 standard

Building

Ensure you have cmake and vcpkg installed, with VCPKG_ROOT set.

cmake -B build -S . -DCMAKE_TOOLCHAIN_FILE=${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake
cmake --build ./build

Running

./run.sh

Or run the compiled binary directly:

./build/shell