Centos hardware information viewing command

[Root @ yan-001 ~] Uname-a linux system information command for viewing kernel OS CPU information [root @ yan-001

[Root @ yan-001 ~] # Uname-a # view the kernel/operating system/CPU information of the linux system information command [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 # linux system information command to view CPU information [root @ yan-001 ~] # Hostname # View computer name linux system information command [root @ yan-001 ~] # Lspci-TV # List all PCI devices [root @ yan-001 ~] # Lsusb-TV # linux system information command for listing 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 zone usage [root @ yan-001 ~] # Df-h # view the use of each partition [root @ yan-001 ~] # Du-sh # view the size of the specified directory [root @ yan-001 ~] # Grep MemTotal/proc/meminfo # view the total memory [root @ yan-001 ~] # Grep MemFree/proc/meminfo # view the amount of idle memory [root @ yan-001 ~] # Uptime # view the system running time, number of users, load [root @ yan-001 ~] # Cat/proc/loadavg # view the system load disk and partition [root @ yan-001 ~] # Mount | column-t # view the mounted partition status [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 (only for IDE devices) [root @ yan-001 ~] # Dmesg | grep IDE # view the IDE device detection status at startup network [root @ yan-001 ~] # Ifconfig # view the properties of all network interfaces [root @ yan-001 ~] # Iptables-L # View firewall settings [root @ yan-001 ~] # Route-n # View route table [root @ yan-001 ~] # Netstat-lntp # View all listening ports [root @ yan-001 ~] # Netstat-antp # View all established connections [root @ yan-001 ~] # Netstat-s # View 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 users [root @ yan-001 ~] # Id # viewing the specified user information [root @ yan-001 ~] # Last # View user login logs [root @ yan-001 ~] # Cut-d:-f1/etc/passwd # View all users in the system [root @ yan-001 ~] # Cut-d:-f1/etc/group # View all groups of the system [root @ yan-001 ~] # Crontab-l # view the current user's scheduled task Service [root @ yan-001 ~] # Chkconfig? List # list all system services [root @ yan-001 ~] # Chkconfig? List | grep on # list all started System Service programs [root @ yan-001 ~] # Rpm-qa # View all the installed software packages [root @ yan-001 ~] # Cat/proc/cpuinfo # linux system command to view CPU-related parameters [root @ yan-001 ~] # Cat/proc/partitions # command for viewing linux hard disk and partition information [root @ yan-001 ~] # Cat/proc/meminfo # linux system command to view linux system memory information [root @ yan-001 ~] # Cat/proc/version # view the version, similar to uname-r [root @ yan-001 ~] # Cat/proc/ioports # view the device io port [root @ yan-001 ~] # Cat/proc/interrupts # View interrupt [root @ yan-001 ~] # Cat/proc/pci # View pci device information [root @ yan-001 ~] # Cat/proc/swaps # view information about all swap partitions