Ctrl+P
code --install-extension jasnah.jasnah --force
Install a specifi version:
code --install-extension jasnah.jasnah@<version>
You can install code command in PATH if you open a Command Palette via ⌘⇧P and type shell command to find the Shell Command: Install 'code' command in PATH
code
shell command
Shell Command: Install 'code' command in PATH