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the file /var/log/auth.log in my debian 6 (with lamp) is getting pretty huge.

Here some lines:

Feb 18 17:26:01 nsxxxxxx CRON[13093]: pam_unix(cron:session): session opened for user root by (uid=0)
Feb 18 17:26:01 nsxxxxxx CRON[13093]: pam_unix(cron:session): session closed for user root

for each minute of days there are these 2 lines. Can somone exaplain what's they are?

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1 Answer 1

up vote 2 down vote accepted

This seems to be some cron job running every minute. Check your crontab files at /etc/cron.d .

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Or in /etc/crontab itself. –  SmallClanger Feb 18 '11 at 16:39
    
In /etc/cron.d there are 2 files php5 and mdadm –  dynamic Feb 18 '11 at 16:48
1  
What's the content of these files? When do this cron jobs start? Read " man 5 crontab ". A line starting with "*/1 * * * * a_program" would run a_program every minute. –  rems Feb 18 '11 at 17:26

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