Linux self-study Notes (v)--time display and Management & monitoring network Information __linux

One, time display and management

1. Show Linux system time

Command: Date

2. Set system time

Command: Date mmddhhmmccyy. Ss

Each digit corresponds in turn: The month and the day are divided annually. seconds seconds

For example, set the time: February 10, 2012 22:33 44 seconds--date 0212332012.44

3. View Calendar

View a month's calendar, for example: February 2012 Calendar

Command: Cal 2 2012

View a full year's calendar, for example: 2012

Command: Cal 2012

Second, monitoring network information

1. Ping

Network monitoring tool Ping, mainly used to monitor whether the remote host is normal, two of the host can connect

Command: Ping target host IP

2. Netstat

The netstat command can be used to display the current network situation of the system. For example: Current connection, packet transfer, routing table contents

Command: Netstat-an

When displaying port sniffing, list the port occupancy process to facilitate the end of suspicious processes

Command: NETSTAT-ANP

3. Ending the suspicious process

Command: Kill Process ID

Force End command: kill-9 process ID