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Unix system history log

Hi, all,
  We are using Compaq Thru 64 machine and if we hope to know how many times we restart that machine or when did we restart it in the past 1 month, which log file can give us these information?
  On the other hand, if we hope to know what settngs were changed in the past 1 month, which log info we can clear understand?
  Thanks a lot.
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chen0426
Asked:
chen0426
2 Solutions
 
liddlerCommented:
last |grep boot
gives system boot times

Which systems settings do you mean?  Most are held in files in /et/ so an ls -l will give you the modification times on the files
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gheistCommented:
Most likely system was not restarted last month.
uptime command outputs time since last boot.
System reboots are logged into utmp/wtmp files, and best seen with last command.(but you can reboot without logging too...)
If you want to know a bit more about running processes you can enable process accounting by running (as root) /usr/sbin/acct/turnacct on, and looking into turnacct manual page for analysis tools for gathered data.


For file alterations - make a script which copies files you consider holding configurations into shadow subtree, and  then simply run diff utility, which even shows files changed.
For binary config files - extract data in text form or use checksums (no information what has changed then).
Since you write script on your own, you have much flexibility, like mailing/logging script results, reverting config file to previous version(s) with ease etc...
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charlie250Commented:
There are a number of ways..
1. Add a command to the system startup to append the date /time to a file (making sure the file is in a filesystem that is mounted at the time!)

2. The data is already there if you go looking for it..
You can use (as root)  uerf -R |more and look for event 300

The above will work as long as you don't remove system log information.
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