fs/unix/tools: Use 'umask -S', the only form of umask with a standardised output form
fs/unix/tools: Use 'umask -S', the only form of umask with a standardised output form

luarocks/luarocks,tarantool/luarocks,keplerproject/luarocks,luarocks/luarocks,luarocks/luarocks,keplerproject/luarocks,tarantool/luarocks,tarantool/luarocks,keplerproject/luarocks,keplerproject/luarocks