man pages section 1M: System Administration Commands
    
U
 
 uadmin -- administrative control ( Index Term Link )
 
 ufs, mount -- mount_ufs ( Index Term Link )
 
 ufs file system debugger -- fsdb_ufs ( Index Term Link )
 
 umount -- unmount file systems and remote resources ( Index Term Link )
 
 umountall -- unmount multiple file systems ( Index Term Link )
 
 unshare -- make local resource unavailable for mounting by remote systems ( Index Term Link )
 
 unshare_nfs -- make local NFS filesystem unavailable for mounting by remote systems ( Index Term Link )
 
 unshareall -- make multiple resources unavailable for mounting ( Index Term Link )
 
 updatehome -- update the home directory copy and link files for the current label ( Index Term Link )
 
 user IDs, become a non-role user -- su ( Index Term Link )