# open > Opens files, directories and applications. > More information: . - Open a file with the associated application: `open {{file.ext}}` - Run a graphical macOS [a]pplication: `open -a "{{Application}}"` - Run a graphical macOS app based on the [b]undle identifier (refer to `osascript` for an easy way to get this): `open -b {{com.domain.application}}` - Open the current directory in Finder: `open .` - [R]eveal a file in Finder: `open -R {{path/to/file}}` - Open all the files of a given extension in the current directory with the associated application: `open {{*.ext}}` - Open a [n]ew instance of an application specified via [b]undle identifier: `open -n -b {{com.domain.application}}`