Linux command for viewing system information

& Hellip; # uname-a # View kernel/OS/CPU information # cat/proc/version # View kernel # cat/etc/issue # View OS version # head-n1/etc/issue # view the operating system version # cat/proc...

 

Some can also be used under freebsd...

# Uname-a # View kernel/operating system/CPU information

# Cat/proc/version # view the kernel

# Cat/etc/issue # view the operating system version

# Head-n 1/etc/issue # view the operating system version

# Cat/proc/cpuinfo # View CPU information

# Hostname # view the computer name

# Lspci-TV # List all PCI devices

# Lsusb-TV # List all USB devices

# Lsmod # List loaded kernel modules

# Env # View environment variable resources

 

# Free-m # View memory usage and swap zone usage

# Df-h # view the usage of each partition

# Du-sh <目录名> # View the size of a specified directory

# Grep MemTotal/proc/meminfo # View total memory

# Grep MemFree/proc/meminfo # view the amount of idle memory

# Uptime # View system running time, number of users, and load

# Cat/proc/loadavg # View system load disks and partitions

 

# Mount | column-t # view the status of the mounted partition

# Fdisk-l # View all partitions

# Swapon-s # View all swap partitions

# Hdparm-I/dev/hda # View disk parameters (only applicable to IDE devices)

# Dmesg | grep IDE # view the network of the IDE device detection status at startup

 

# Ifconfig # view the attributes of all network interfaces

# Iptables-L # View firewall settings

# Route-n # view the route table

# Netstat-lntp # View all listening ports

# Netstat-antp # View all established connections

# Netstat-s # View network statistics process

 

# Ps-ef # View all processes

# Top # real-time display of process status users

 

# W # View active users

# Id <用户名> # Viewing specified user information

# Last # View user logon logs

# Cut-d:-f1/etc/passwd # View all users in the system

# Cut-d:-f1/etc/group # View all groups in the system

# Crontab-l # view the scheduled task service of the current user

 

# Chkconfig-list # list all System Services

# Chkconfig-list | grep on # list all started System service programs

 

# Rpm-qa # View all installed software packages

Cat/proc/cpuinfo: View CPU parameters

Cat/proc/partitions: View hard disks and partitions

Cat/proc/meminfo: View memory information

Cat/proc/version: view the version, similar to uname-r

Cat/proc/ioports: view the device's io port

Cat/proc/interrupts: view the interrupt

Cat/proc/pci: View pci device information

Cat/proc/swaps: view information about all swap partitions