sudo(8) install(1) -d -m 0700 -o ryjo -g ryjo /home/ryjo/.ssh
execute a command as another user
copy files and set attributes
-d, --directory
       treat all arguments as directory names; create all components of the specified directories
-m, --mode=MODE
       set permission mode (as in chmod), instead of rwxr-xr-x
-o, --owner=OWNER
       set ownership (super-user only)
-g, --group=GROUP
       set group ownership, instead of process' current group
source manpages: sudoinstall