1

So I've set chmod 777 -R to /var/log on Raspbian and now I get some errors when logrotate runs. The errors are like:

error: skipping "/var/log/apt/term.log" because parent directory has insecure permissions (It's world writable or writable by group which is not "root") Set "su" directive in config file to tell logrotate which user/group should be used for rotation.

Is there a way to set it back to the default?

1

You can safely set perms to 755 for directories and 644 for file:

# find /var/log -type d -exec chmod 755 {} \;
# find /var/log -type f -exec chmod 644 {} \;

More secure (with access for root only):

# find /var/log -type d -exec chmod 700 {} \;
# find /var/log -type f -exec chmod 600 {} \;
  • 1
    Shorthand: chmod -R u=rwX,g=rX,o=rX /var/log, respectively chmod -R u=rwX,g=,o= /var/log. – Richard Neumann Nov 13 '17 at 15:39
1

Files located in /var/log/ on raspbian have usually -rw-r----- permissions which means chmod 640 will put the correct permissions back.

For example, /var/log/apt/term.log has the following permissions set:

-rw-r----- 1 root adm      0 Nov  1 06:25 term.log

Other files under /var/log/ have the following permissions set:

-rw-r----- 1 root adm    214421 Nov 13 10:01 auth.log
-rw-r----- 1 root adm  16903470 Nov 12 06:25 auth.log.1

To set the correct permissions on these files use find as follows:

find /var/log/ -type f -exec chmod 640 {} +

For directories, you can use this:

find /var/log -type d -exec chmod 755 {} +

The command find will walk through the /var/log directory and based on the type you pass to it, correct permissions are applied.

  • The result of the command is find: Arguments to -type should contain only one letter but it helped a lot. Thanks! – sOnt Nov 13 '17 at 9:38
  • @sOnt I saw I had an extra - there as -f but corrected it. Glad it helped you – Valentin Bajrami Nov 13 '17 at 10:13

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.