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Script and Shebang Recipe Temporary Files

Both script and shebang recipes write the recipe body to a temporary file for execution. Script recipes execute that file by passing it to a command, while shebang recipes execute the file directly. Shebang recipe execution will fail if the filesystem containing the temporary file is mounted with noexec or is otherwise non-executable.

The directory that just writes temporary files to may be configured in a number of ways, from highest to lowest precedence:

  • Globally with the --tempdir command-line option or the JUST_TEMPDIR environment variable1.41.0.

  • On a per-module basis with the tempdir setting.

  • Globally on Linux with the XDG_RUNTIME_DIR environment variable.

  • Falling back to the directory returned by std::env::temp_dir.