Hi,
I noticed that some directories under /tmp were updated ctime daily. As you can see below, I thought that was because of tmpwatch.
Code:
[root@localhost ~]# cat /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
[root@localhost ~]# ls /etc/cron.daily/
0anacron 0logwatch cups logrotate makewhatis.cron mlocate.cron prelink rpm tmpwatch
[root@localhost ~]# ls -lc /tmp
total 44
drwx------ 3 root root 4096 Nov 10 11:15 gconfd-root
drwx------ 2 root root 4096 Nov 10 11:15 keyring-qFRB6k
srwxr-xr-x 1 root root 0 Nov 10 11:16 mapping-root
drwx------ 2 root root 4096 Nov 10 11:16 orbit-root
drwx------ 2 root root 4096 Nov 10 11:15 ssh-rAIQTP2769
drwx------ 2 root root 4096 Nov 10 11:16 virtual-root.X9XGxG
[root@localhost ~]# date
Thu Nov 10 11:17:14 CST 2011
[root@localhost ~]# /etc/cron.daily/tmpwatch
[root@localhost ~]# ls -lc /tmp
total 44
drwx------ 3 root root 4096 Nov 10 11:17 gconfd-root
drwx------ 2 root root 4096 Nov 10 11:17 keyring-qFRB6k
srwxr-xr-x 1 root root 0 Nov 10 11:16 mapping-root
drwx------ 2 root root 4096 Nov 10 11:17 orbit-root
drwx------ 2 root root 4096 Nov 10 11:17 ssh-rAIQTP2769
drwx------ 2 root root 4096 Nov 10 11:17 virtual-root.X9XGxG
[root@localhost ~]#
But how come tmpwatch updates directory ctime? Even if there is no file deleted under that directory:
Code:
[root@localhost ~]# ls -lc
total 92
drwxr-xr-x 2 root root 4096 Nov 28 13:26 Desktop
-rw------- 1 root root 1414 Feb 3 2010 anaconda-ks.cfg
-rw-r--r-- 1 root root 51009 Feb 3 2010 install.log
-rw-r--r-- 1 root root 3696 Feb 3 2010 install.log.syslog
drwxr-xr-x 2 root root 4096 Nov 28 13:33 test
[root@localhost ~]# ls test
file
[root@localhost ~]# ls test/file -lc
-rw-r--r-- 1 root root 0 Nov 28 13:30 test/file
[root@localhost ~]# date
Mon Nov 28 14:00:17 CST 2011
[root@localhost ~]# /usr/sbin/tmpwatch -umc 1 /root/test
[root@localhost ~]# ls -lc
total 92
drwxr-xr-x 2 root root 4096 Nov 28 13:26 Desktop
-rw------- 1 root root 1414 Feb 3 2010 anaconda-ks.cfg
-rw-r--r-- 1 root root 51009 Feb 3 2010 install.log
-rw-r--r-- 1 root root 3696 Feb 3 2010 install.log.syslog
drwxr-xr-x 2 root root 4096 Nov 28 14:00 test
[root@localhost ~]# ls test/file -lc
-rw-r--r-- 1 root root 0 Nov 28 13:30 test/file
[root@localhost ~]#
The file "/root/test/file" does not change, but "/root/test" gets updated ctime. Why?
THANKS
