How can I find out as what user a command executes? (I'm running Ubuntu, but I suspect the answer applies to Unix in general).
What I'm trying to do is get
msmtp running and logging to
/var/log/msmtp. I've set the owner and group of that file to
sudo adduser dandv mail:
$ ls -al /var/log/msmtp.log -rw-rw---- 1 mail mail 0 Jul 24 18:45 /var/log/msmtp.log $ groups dandv dandv : dandv mail sudo
Yet when when I run
cat testmail | msmtp email@example.com -v
I get a permission denied:
msmtp: cannot log to /var/log/msmtp.log: cannot open: Permission denied
What is msmtp's problem?