CentOS Hardware Information View command

[root@yan-001 ~] # uname-a # View Linux System Information commands for kernel/operating system/CPU information

[root@yan-001 ~] # head-n 1/etc/issue # View the operating system version, is the number 1 is not the letter L

[root@yan-001 ~] # cat/proc/cpuinfo # View Linux System Information commands for CPU information

[root@yan-001 ~] # hostname # View the Linux System Information command for the computer name

[root@yan-001 ~] # LSPCI-TV # list all PCI devices

[root@yan-001 ~] # LSUSB-TV # listing Linux System Information commands for all USB devices

[root@yan-001 ~] # lsmod # list loaded kernel modules

[root@yan-001 ~] # env # view environment variable resources

[root@yan-001 ~] # free-m # View memory usage and swap area usage

[root@yan-001 ~] # df-h # View the usage of each partition

[root@yan-001 ~] # du-sh # View the size of the specified directory

[root@yan-001 ~] # grep Memtotal/proc/meminfo # View Total Memory

[root@yan-001 ~] # grep Memfree/proc/meminfo # View Idle memory

[root@yan-001 ~] # uptime # View system run time, number of users, load

[root@yan-001 ~] # cat/proc/loadavg # View system load disks and partitions

[root@yan-001 ~] # Mount | COLUMN-T # View the partition status of the hook

[root@yan-001 ~] # fdisk-l # View all partitions

[root@yan-001 ~] # swapon-s # view all swap partitions

[root@yan-001 ~] # hdparm-i/dev/hda # View disk parameters (for IDE devices only)

[root@yan-001 ~] # DMESG | grep IDE # View IDE device detection network at startup

[root@yan-001 ~] # ifconfig # View properties of all network interfaces

[root@yan-001 ~] # iptables-l # view firewall settings

[root@yan-001 ~] # route-n # View the routing table

[root@yan-001 ~] # netstat-lntp # view all listening ports

[root@yan-001 ~] # netstat-antp # View all connections that have been established

[root@yan-001 ~] # netstat-s # View the network statistics process

[root@yan-001 ~] # ps-ef # View All Processes

[root@yan-001 ~] # top # Real time display process status user

[root@yan-001 ~] # w # view active user

[root@yan-001 ~] # ID # view specified user information

[root@yan-001 ~] # last # View User login log

[root@yan-001 ~] # cut-d:-f1/etc/passwd # View All users of the system

[root@yan-001 ~] # cut-d:-f1/etc/group # View all groups of the system

[root@yan-001 ~] # crontab-l # View the scheduled task service for the current user

[root@yan-001 ~] # chkconfig–list # list all system services

[root@yan-001 ~] # Chkconfig–list | grep on # Lists all the initiated system service programs

[root@yan-001 ~] # rpm-qa # view all installed Packages

[root@yan-001 ~] # cat/proc/cpuinfo # view Linux system commands for CPU-related parameters

[root@yan-001 ~] # cat/proc/partitions # View System Information commands for Linux hard disk and partition information

[root@yan-001 ~] # cat/proc/meminfo # Linux system commands for viewing Linux system memory information

[root@yan-001 ~] # cat/proc/version # view version, similar to Uname-r

[root@yan-001 ~] # cat/proc/ioports # view Device IO ports

[root@yan-001 ~] # cat/proc/interrupts # view interrupts

[root@yan-001 ~] # cat/proc/pci # View information for PCI devices

[root@yan-001 ~] # cat/proc/swaps # View information for all swap partitions