Solved

Boot Time

Posted on 2001-07-03
7
202 Views
Last Modified: 2010-04-21
How to get boot time of a machine directly from a kernel.

who -b
gives me the last reboot time. but I would like to get it from Kernel.

I'm using DYNIX/PTX
0
Comment
Question by:prashant_n_mhatre
  • 4
  • 3
7 Comments
 
LVL 14

Expert Comment

by:chris_calabrese
ID: 6249877
The kernel couldn't care less when the system booted and can not tell you.  This is a basic premise of Unix systems.  The kernel does what it needs to, and nothing else.
0
 
LVL 4

Author Comment

by:prashant_n_mhatre
ID: 6249883
Then how to get boot time in C program?
0
 
LVL 14

Expert Comment

by:chris_calabrese
ID: 6249896
This information is kept in the wtmp file.  See the wtmp man page.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 4

Author Comment

by:prashant_n_mhatre
ID: 6249917
I read it but wtmp doesn't talk about boot time.
0
 
LVL 14

Accepted Solution

by:
chris_calabrese earned 65 total points
ID: 6249943
wtmp will record boot entries with ut_type=BOOT_TIME
0
 
LVL 4

Author Comment

by:prashant_n_mhatre
ID: 6249988
Thanks chris_calabrese
0
 
LVL 14

Expert Comment

by:chris_calabrese
ID: 6250032
You're welcome.  Glad to help.
0

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you do backups in the Solaris Operating System, the file system must be inactive. Otherwise, the output may be inconsistent. A file system is inactive when it's unmounted or it's write-locked by the operating system. Although the fssnap utility…
In tuning file systems on the Solaris Operating System, changing some parameters of a file system usually destroys the data on it. For instance, changing the cache segment block size in the volume of a T3 requires that you delete the existing volu…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
In a previous video, we went over how to export a DynamoDB table into Amazon S3.  In this video, we show how to load the export from S3 into a DynamoDB table.

773 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question