Wednesday, October 9, 2013

Linux Troubleshooting with dmesg command

During  bootup process, kernel gets loaded into the system memory and it controls the entire system.

During the bootup process , kernel displays number of messages and hardware divice information.

These messages will keep in a ring buffer. You can use these messages for sytem Troubleshooting. You can see these messages by using dmesg command.

1. open a terminal and type

  $ dmesg |more

2. To see the status of Network

  $ dmesg | grep eth

3. To see the memory status

  $ dmesg | grep Memory

4. for clearing dmesg buffer

  $ dmesg -c

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