How can you view system logs in Linux?

In Linux, system logs are usually stored in the /var/log directory. There are several ways to view logs:

• The journalctl command — used for viewing systemd logs. For example, to view all logs:

journalctl

To view logs in real-time:

journalctl -f

• Viewing specific log files using cat, less, or tail. For example:

tail -n 100 /var/log/syslog

or

less /var/log/messages

• To filter by time or service in journalctl, you can use options like:

journalctl -u nginx.service --since today

Thus, for systems with systemd, it is preferable to use journalctl, and for classic systems, viewing files in /var/log is common.