View configuration information commands under Linux

# uname-a # View kernel/Os/cpu information
# head-n 1/etc/issue # viewOperating SystemVersion
# cat/proc/cpuinfo # View CPU Information
# hostname # View computer name
# LSPCI-TV # list all PCI devices
# LSUSB-TV # list all USB devices
# lsmod # List of loaded kernel modules
# env # View Environment variables

Resources
# free-m # View memory usage and swap area usage
# df-h # View the usage of each partition
# du-sh < directory name > # View the size of the specified directory
# grep Memtotal/proc/meminfo # View Total Memory
# grep Memfree/proc/meminfo # View the amount of free memory
# uptime # View System uptime, number of users, load
# cat/proc/loadavg # View System load

Disks and partitions
# Mount | COLUMN-T # Viewing the status of a mounted partition
# fdisk-l # View all partitions
# swapon-s # View all swap partitions
# hdparm-i/dev/hda # View disk parameters (for IDE devices only)
# DMESG | grep IDE # View IDE device detection status at startup

Internet
# ifconfig # View the properties of all network interfaces
# iptables-l # View firewall settings
# route-n # View the routing 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

User
# w # View active Users
# ID < user name > # view specified user information
# last # View User LoginLog
# cut-d:-f1/etc/passwd # View All users of the system
# cut-d:-f1/etc/group # View all system groups
# crontab-l # View Current user's scheduled tasks

Service
# chkconfig--list # list all system services
# chkconfig--list | grep on # Lists all startup system services

Program

# rpm-qa # View all installed Packages

Cat/proc/cpuinfo View  cpufree-m view   memory fdisk-l view hard disk partition Df-h View mount directory ifconfig check Look at the network card information Ethtool eth0 View detailed network card operation mode Lspic list all chip information, such as sound card, video card, network card, etc.

Reprinted from: http://blog.csdn.net/liaozhenhuade/article/details/8481588

View configuration information commands under Linux