Shulou(Shulou.com)06/01 Report--

This article mainly explains "what are the common system commands in CentOS". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn what are the common system commands in CentOS.

# 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 variables

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 # check the total memory

# grep MemFree / proc/meminfo # check the amount of free memory

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

# cat / proc/loadavg # View system load

Disks and partitions

# mount | column-t # to view the status of attached partitions

# 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 # check the detection status of IDE devices at startup

The network

# 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 # 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 the current user's scheduled tasks

Service

# chkconfig-- list # list all system services

# chkconfig-- list | grep on # lists all started system services

program

# rpm-qa # View all installed packages

To modify hostname, you need to modify two points:

1) vim / etc/sysconfig/network modifies HOSTNAME=your_hostname

2) vim / etc/hosts modified 12.160.134.168 your_hostname

Python installation

1) download Python and download Python-2.7.6.tar.xz directly

2) install .tar.xz decompression tool: yum-y install xz

3) extract the .tar.xz file: unxz Python-2.7.6.tar.xz and tar xvf Python-2.7.6.tar

4) cd Python-2.7.6

5). / configure-prefix=/usr/local-enable-unicode=ucs4-enable-shared LDFLAGS= "- Wl,-rpath / usr/local/lib"

Make & & make altinstall

Pip installation

1) wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py

2) python2.7 ez_setup.py

3) easy_install-2.7 pip

4) pip2.7 install [packagename]

Pip2.7 install-- upgrade [packagename]

Pip2.7 uninstall [packagename]

Thank you for your reading, these are the contents of "what are the common system commands in CentOS?" after the study of this article, I believe you have a deeper understanding of what the common system commands in CentOS have, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.