Simple check for availability of system tools — check_system

Can be used to verify if a tool (e.g. convert) is in $PATH and findable from within R. Sometimes a tool is in $PATH in regular shell sessions but not within R.

Usage

check_system_tool(x, strict = FALSE, warn = TRUE)

Arguments

x: Name of a binary, e.g. convert for ImageMagick or brew for Homebrew on macOS.
strict: [FALSE] Whether to stop() if the tool is not found or return FALSE with a warning.
warn: [TRUE] Whether to show a warning if the tool is no found. Only has an effect if !strict.

Value

TRUE if the tool is find, FALSE otherwise, and an error if strict == TRUE and the tool is not found.