How to view system log files in CentOS?

To view the system log files, you can use the following command:

  1. Viewing system log files:
cat /var/log/messages
  1. View the starting log file:
cat /var/log/boot.log
  1. View the security log files.
cat /var/log/secure
  1. View the kernel log file:
dmesg | less
  1. View the log files for a specific service (using the sshd service as an example):
cat /var/log/secure | grep sshd

The above commands can be used to view various log files in the system, assisting in troubleshooting system issues and understanding the system’s operation status.

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