# Uname-
# View kernel/operating system/CPU Information
# 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 variables
Resources
# Free-m # view memory usage and swap zone usage
# Df-h # view the usage of each partition
# Du-sh <Directory Name> # 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 IDE Device Detection Status at startup
Network
# 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 # display Process status in real time
User
# W # view active users
# Id <User Name> # view 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 tasks of the current user
Service
# Chkconfig -- list # list all system services
# Chkconfig -- list | grep on # list all started system services
Program
# Rpm-qa # view all installed software packages
Modify the hostname in two ways:
1) Modify HOSTNAME = your_hostname in vim/etc/sysconfig/network
2) vim/etc/hosts modify 12.160.134.168 your_hostname
Python Installation
1) download Python, directly download Python-2.7.6.tar.xz
2) install the. Tar. xz decompression tool: yum-y install xz
3) decompress .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]