查看系统相关信息

# top             # display and update the top cpu processes
# mpstat 1         # display processors related statistics
# vmstat 2         # display virtual memory statistics
# iostat 2         # display I/O statistics (2 s intervals)
# systat -vmstat 1     # BSD summary of system statistics (1 s intervals)

# systat -tcp 1         # BSD tcp connections (try also -ip)
# systat -netstat 1     # BSD active network connections
# systat -ifstat 1     # BSD network traffic through active interfaces
# systat -iostat 1     # BSD CPU and and disk throughput
# tail -n 500 /var/log/messages # Last 500 kernel/syslog messages
# tail /var/log/warn     # System warnings messages see syslog.conf