Ubuntu
udev package

  1. Bug #224870
  2. Comment #5

Comment 5 for bug 224870

Revision history for this message
Remi Broemeling (remi-nexopia) wrote :

[ -w /etc/udev/rules.d ] returns FALSE in BASH for a RO root
[ -w /etc/udev/rules.d ] returns TRUE in DASH for a RO root
/usr/bin/[ -w /etc/udev/rules.d ] returns FALSE in BASH and DASH (and I assume every other shell) for a RO root

I had thought that POSIX specified that -w should return FALSE when used on a read-only filesystem, but perhaps I was incorrect.

A kludge would be to try and touch a file in /etc/udev/rules.d (errors to /dev/null), and then check the return code.