Linux Common Commands-System configuration chapter (II)

To a certain extent, you will pay attention to some of the system configuration, just need the relevant command. Now make a list of common commands for Linux view system configuration

# uname-a # view kernel/Os/cpu information
# head-n 1/etc/issue # view OS 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 of 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 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 # View the status of the attached 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 network at startup
# 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 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 log in log
# cut-d:-f1/etc/passwd # View system All users # cut-d:-f1/etc/group # View all system groups
# crontab-l # View the current user's scheduled tasks service
# chkconfig–list # list all system services
# Chkconfig–list | grep on # list all started system services
# rpm-qa # View all installed packages

Linux Common Commands-System configuration chapter (II)