Linux Error Logs
To view the error log file on Linux and filter for errors related to a specific website, you can use the tail command in combination with the grep command.
You can also use the -i option with grep to perform a case-insensitive search, so that lines containing “www.example.com”, “WWW.EXAMPLE.COM”, and “WwW.ExAmPlE.CoM” would all be displayed.
Here is an example of the command with the -i option:
tail -f /path/to/error.log | grep -i "www.example.com"
On Linux systems, there are several common error logs that you might want to check when troubleshooting issues. Here are some examples:
/var/log/syslog: This is the general system log file, where various system messages are logged.
/var/log/auth.log: This log file contains messages related to authentication and authorization, such as login and logout messages.
/var/log/kern.log: This log file contains messages related to the Linux kernel, such as system startup and shutdown messages, as well as hardware and driver-related messages.
/var/log/cron.log: This log file contains messages related to the execution of cron jobs.
/var/log/messages: This log file contains miscellaneous messages that are not logged elsewhere.
/var/log/apache2/access_log: If you are running the Apache web server, this log file contains the web server’s access log, which records incoming HTTP requests.
/var/log/apache2/error_log: If you are running the Apache web server, this log file contains the web server’s error log, which records errors and problems encountered by the web server.
Keep in mind that these log files are just examples, and the actual log files on your system may be named differently or may be located in a different directory.