Rust CLI Troubleshooting: rustup, Toolchains, Components, and Targets/See which rustc binary is used
Show the actual executable path selected by rustup.
Section: Toolchain selection
See which rustc binary is used
bash
bash
rustup which rustcExplanation
Helpful when PATH confusion or editor integration points to the wrong compiler binary.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Toolchain selection
Show active toolchain details
Display installed toolchains and the active default.
Pin a directory to one toolchain
Set a local override for the current project.
Run Cargo with a specific toolchain
Use a channel explicitly for one command.
List installed and available components
See whether rustfmt, clippy, or docs are installed.