mountpoint

Check if a directory or file is a mountpoint.

Implemented

• Check via /proc/self/mountinfo with stat fallback
• -d / --fs-devno: print major:minor device number of the filesystem
• -q / --quiet: suppress all output
• -x / --devno: print major:minor of the block device
• --nofollow: don’t follow symlinks
• Exit code 0 for mountpoints, 32 otherwise