[Linux] Log monitoring

tail -F -n 20 /var/log/messages

tail -F -n 20 /var/log/cron

tail -F -n 20 /var/log/maillog

tomcat -Standard output (including the contents of catalina.log) + standard error output

tail -F -n 20 /usr/local/tomcat/logs/catalina.out

apache ・ Error log

tail -F -n 20 /var/log/httpd/error_log

·access log

tail -F -n 20 /var/log/httpd/request_log

·access log

tail -F -n 20 /var/log/httpd/access_log