command
1. ifconfig: first line: network card name
RX: received data packet size
TX: sent data packet size
ether: physical address
inet: test network card/loopback address
2. uname: system kernel and version information
with GNU means yes Open
First line host name, kernel version, system release time
3. uptime: system load information
First line up: online, number of terminals, load status
top: dynamic changes and rich content
4. free: current memory usage
Mem: physical memory
total: total memory
used and free are used for amplitude modulation
swap: simulate a part of memory
root: currently logged-in user
shared: process shared memory
buffers: disk cache memory
cached: cache memory
5, who: view current User terminal information used
6. Last: Used to view the login records of all systems.
7. history: Used to view the history command
history -c: Clear
! Command number
8, sosreport: mobile phone system configuration and architecture information and output the entire document
tar: Compressed package
Ctrl+C to exit