Linux view common commands for System configuration

System

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

# head-n 1/etc/issue # View operating system version

# cat/proc/cpuinfo # View CPU Information

# hostname # View computer name

# LSPCI-TV # list all PCI devices

# LSUSB-TV # list all USB devices

# lsmod # list the loaded kernel modules

# env # View environment variable resources

# free-m # View memory usage and swap area usage

# df-h # View the usage of each partition

# du-sh # View the size of the specified directory

# grep Memtotal/proc/meminfo # View Total Memory

# grep Memfree/proc/meminfo # View Idle memory

# uptime # View system run time, number of users, load

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

# Mount | COLUMN-T # View the partition status of the hook

# fdisk-l # View all partitions

# swapon-s # View all swap partitions

# hdparm-i/dev/hda # View disk parameters (IDE devices only)

# DMESG | grep IDE # View IDE device detection network at startup

# ifconfig # View 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 connections that have been established

# netstat-s # View the network statistics process

# ps-ef # View All Processes

# top # Real-time display of process status users

# w # View active Users

# ID # view specified user information

# last # View User login log

# cut-d:-f1/etc/passwd # View All users of the system

# cut-d:-f1/etc/group # View all groups of the system

# crontab-l # View scheduled task services for the current user

# chkconfig–list # List all system services

# Chkconfig–list | grep on # Lists all the initiated system service programs

# rpm-qa # View all installed Packages