On Wed, 2005-07-13 at 10:10 -0500, Mike McCarty wrote: > Paul Howarth wrote: > > >On Wed, 2005-07-13 at 01:46 -0500, Mike McCarty wrote: > >>I don't understand why echo should be able to write a file that > >>an editor cannot. > >> > >> > > > >Some editors like to rename the original file to "filename~" and then > >write out a new file "filename". This won't work in /proc. > > > >Paul. > > > > > I don't use *that* editor. I never have used that one. Are you sure? Many editors open files like this. > Interesting that one > can delete but not rename the file, even as owner. How is that accomplished? It's ordinary permissions on files and directories: # ls -ld /proc/sys/vm/swappiness -rw-r--r-- 1 root root 0 Jul 13 17:13 /proc/sys/vm/swappiness # ls -ld /proc/sys/vm dr-xr-xr-x 2 root root 0 Jul 13 17:13 /proc/sys/vm Note the owner permissions. Ralf
