I'm running rsync from a php script using backtick operators. It's running as an apache user.

In /etc/sudoers, I've set

#Defaults requiretty
Cmnd_Alias REPORTS = /usr/bin/rsync

In the error log, I'm getting these errors

sudo: can't stat /var/run/sudo: Permission denied
sudo: no tty present and no askpass program specified

Also, not that the rsync path is correct, and so is the rsync command in php. I can run the command as root, also if I add NOPASSWD to another user, i can sudo and run the same command.


This is likely because sudo requires a TTY session to run. You can force sudo to assume/use a TTY by passing in the -t arguments, i.e.:

sudo -tt /usr/bin/rsync
  • 1
    Where is this -t thing documented? I can't get it to work. – Tobu May 9 '11 at 18:18
  • -t is option related to SELinux – mmv-ru Dec 8 '11 at 10:45

Disable SELINUX(/etc/selinux/config SELINUX=disabled and reboot).

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.