-rwsr-sr-x 1 root root 7828 Apr 28 11:23 X The 's' is a 'stickybit', right?
No. ,----[ (coreutils)What information is listed ] | The permissions listed are similar to symbolic mode specifications | (*note Symbolic Modes::). But `ls' combines multiple bits into the | third character of each set of permissions as follows: | `s' | If the setuid or setgid bit and the corresponding executable | bit are both set. | | `S' | If the setuid or setgid bit is set but the corresponding | executable bit is not set. | | `t' | If the sticky bit and the other-executable bit are both set. | | `T' | If the sticky bit is set but the other-executable bit is not | set. | | `x' | If the executable bit is set and none of the above apply. | | `-' | Otherwise. `---- Is this something Hurd needs? Yes, and not only GNU/Hurd, GNU/Linux needs it to, infact, all systems need it. X must run as root. Can I chmod +x X, without causing any grief. No.