Check installed formulae and casks — brew

brew_list() lists all installed packages

is_installed() checks if a given package is installed

brew_list(formulae = TRUE, casks = TRUE, ...)

is_installed(package, formulae = TRUE, casks = TRUE)

Arguments

formulae	Include installed formulae (default: `TRUE`)
casks	Include installed casks (default: `TRUE`)
...	Arguments passed on to `brew_cmd` `cmd` The command to run (e.g., `install`) `args` Additional arguments for the command `brew_cmd` Optional: Location of `brew` command. `echo` Whether to print output and error messages to the screen. Defaults to `TRUE` for interactive sessions.
package	Name of formula or cask

A data frame containing the name and version of each installed package and how it was installed (i.e., via formula or cask).

A logical value indicating whether or not the package is installed

if (FALSE) {
brew_list()
}
if (FALSE) {
# Check whether or not unixodbc is installed
is_installed("unixodbc")
}