1. List the cores that are being used in the system:
Uname-a
Linux localhost.localdomain 3.10.0-327.22.2.el7.x86_64 #1 SMP Thu June 17:05:11 UTC 2016 x86_64 x86_64 x86_ Gnu/linux
2. Query the entire kernel of the system:
Rpm-qa | grep kernel
Linux/centos How to see if the NIC is 100M or 1000M. Check the 100 gigabit or gigabit (1GBPS) bandwidth access, please see the command below
[root@www.ctohome.com]# mii-tool-vMII-TOOL.C 1.9 2000/04/28 00:56:08 (David Hinds)Siocgmiireg on eth0
Turn from: https://blog.csdn.net/jack85986370/article/details/51321475
Lrzsz can be uploaded and downloaded in Linux instead of FTP.
LRZSZ official website entrance: http://freecode.com/projects/lrzsz/Lrzsz is a x,y, and Zmodem file Transfer
Installing CentOS 7 and Windows 7 dual systems, you want to start Windows 7 by default, and find that CentOS 7 and previous versions modify the default startup items as if they had changed, mainly because CentOS grub used GRUB2, and the change in
Recently because the company needs has been, has been in the development of CentOS, you know, this thing to engage in a problem, especially for my half-baked people, especially pain. As a result, it is estimated that a number of subsequent articles
First of all, make sure your centos have quota.
One more thing is to shut down SELinux.
。
First type the command sestatus-v
You can see if SELinux is open.
If you open this.
Can Vim/etc/selinux/config
Change into selinux=disabled
Restart
Virtual machine Installation CentOS 5.6
1. Create a new virtual machine
2. Set up a later installation CD
3. Select the installed operating system
4. Set the processor, the default one, you can choose according to your own configuration
5. Set
CentOS two ways to add programs to a service and set the service to start automatically:
The first method: use Chkconfig to configure the boot level
Under CentOS or redhat other systems, if the services are installed behind them, such as httpd,
1, install QT, enter the terminal of the CentOS system, execute the following order sequentiallychmod +x Qt-opensource-linux-x64-5.5.1.run./qt-opensource-linux-x64-5.5.1.run
2, the author CentOS 7 64, Installation complete Qt5.5.1. Create a new
Preparation: 1,centos 6.5 minimal Desktop2, configure CentOS to access the Internet
Starting: 1, using the command yum install XDM installation XDm
Manage X-Monitor collection with XDMCP support
2, modify the/etc/x11/xdm/xaccess file and
Spark 2.2 needs to run in the Java environment, is not any version can do. Not Before the spark official website to see the need to run the environment is jdk8+, so I installed Jdk9, but in the JDK 9 environment did not install successfully, run
Turn from: http://www.linuxidc.com/Linux/2016-04/129784.htm
Key points:
1. Installation may need to rely on: Yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel
2. Download python3.5.1 's tar packets from the
Centos 6.5 has been released, but Python is a 2.6.6 version, and you can upgrade Python yourself for friends who want to use a new version of Python. 1. View the current version of Python.
[root@localhost liukk]# python
python 2.6.6 (r266:84292,
Linux installation tomcat7.0.61, Linux CentOS 6.6 installation tomcat7.0.61, Linux Redhat installation tomcat7.0.61.
The Linux settings tomcat boot from boot.
1. Download Tomcat
Tomcat official website Download tomcat installation package, download
In some cases we may need to use the virtual IP (VIP)
First we can use the command:
IP addr
Check the name of the network card currently in use and the current IP.
As shown in the figure above, eno16777736 is the current network card name.
1. Download the latest version of UltraISO (I use the latest version), do not repeat here.
2. Start UltraISO, click on the "File" menu under the "Open" button, open the prepared ISO image files, such as Centos-7-x86_64-minimal-1511.iso, at this
Ifup, Ifdown:linux command
Real-time manual modification of some network interface parameters, you can use ifconfig to achieve, if you want to directly to the configuration file, in the/etc/sysconfig/network-scripts inside the IFCFG-ETHX and other
Linux system is: CentOS 6.4 64-bit
I. Limitation of changes in the number of documents (1) VI /etc/security/limits.conf appended at the end * Soft nofile 10240 * Hard Nofile 10240 (2) VI /etc/pam.d/login Append session
Compared to Virtualbox,vmware because of the closed-source characteristics, stability and compatibility are not as good as the former, but because the author of the previous virtual machines are using VMware, so still try to install the VMware
Linux under the default system comes with python2.6 version, this version is dependent on many programs of the system, so it is not recommended to delete, if using the latest Python3 then we know that the compilation and installation of the source
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