After CentOS is installed, only port 22 is enabled by default. If you want to open other ports, you need to open the required ports.For example, open the default http port 80.Edit iptablesVi/etc/sysconfig/iptables
vi
Use udev to manage NICs
The udev configuration file path of the NIC is: etc/udev/rules. d/* net *. rules.
Delete an Eni
Etc/udev/rules. d/* net *. rules Delete the corresponding Nic configuration information
Command Line input: start_udev
Add
1. view the number of physical CPUs
Grep 'physical id'/proc/cpuinfo | sort-u| Wc-l
2. view the number of coresGrep 'core id'/proc/cpuinfo | sort-u | wc-l
3. view the number of threads
Grep 'processor '/proc/cpuinfo | sort-u | wc-l
4. view
I heard that Fedora 10 had to be packed, and I was wondering, how could it be so fast for another two months? Doesn't Fedora 10 want to bring the latest software package? After reading it, I realized that Fedora 10 will continue to carry forward the
1. Uninstall the ibus Input Method: sudo apt-get remove ibus
Sudo indicates that the root account is disabled in Ubuntu by default. Many operations can be performed only when the root permission is obtained.
Killall ibus-daemon
Sudo apt-get purge
The Canonical partner repository contains proprietary software (such as Skype, VMWare clients, Adobe Flash, and Adobe Reader) that are provided free of charge. This is not included in the original Ubuntu system.
Recommended reading:
Download,
To view whether the Ubuntu operating system has 32-bit or 64-bit digits, run the following command:
# Check the number of long digits. the return value is 32 or 64.
Enter the command getconf LONG_BIT at terminal.
# View the file information. 32-
In Ubuntu Linux, we can use the following commands or tools to quickly obtain the hardware information of the machine.
Recommended reading:
Download, install, and configure Ubuntu 14.04
Ubuntu 14.04 system:
Ubuntu 14.04 text tutorial on hard
Clementine is a very good free-source music player that supports many cloud spaces outside China, such as box.com. Clementine was written using qt4 and inspired by Amarok 1.4. Clementine is also a cross-platform music player that supports Linux,
Share common shortcut keys for Ubuntu 12.04-remember these keys to make you more comfortable!
Download, install, and configure Ubuntu 14.04
Ubuntu 14.04 system:
Ubuntu 14.04 text tutorial on hard drive installation in Windows 7
===== Desktop
Python 3.3.5 was released last month. Compared with the previous Python version, it solved some key problems. View the Update log for detailed release information of the revised version.
Recommended reading:
Python development technology details.
Git is directly installed with yum in CentOS 6.4, and it is expected that the auto-completion function is not provided. It is really painful for children with poor English skills and poor memory.
Recommended reading:
Fedora downloads Git through
Abstract: Redis is a very popular memory database in the industry. It is generally used as an intermediate cache system for improving the throughput and response speed of the overall commercial system. This article briefly introduces the
There are many installation tutorials for CentOS and Windows dual systems on the Internet, but most of them are for mutual reference. Almost all of them are the same, and some problems seem unclear. I personally tried it and had some experience
When an alert is reported, the Linux space usage is greater than 95%.
[Root@www.bkjia.com] # df-k
Filesystem 1K-blocks Used Available Use % Mounted on
/Dev/cciss/c0d0p2 10080520 9112968 455484 96%/
None 1977584 0 1977584 0%/dev/shm
/Dev/cciss/c0
When you configure the Android environment in Ubuntu, you can start adb directly in the terminal as you would in Windows, so that the path of adb is added to the environment variable just like that in Linux and Windows, therefore, the path of adb is
By default, GCC is not installed in Red Hat Enterprise Linux. To install GCC, configure the local yum source of Red Hat Enterprise Linux as follows:
1. Mount the CD or USB flash disk of the RHEL6.2 image to a directory, such as/mnt.
RemoteBox is a good application. RemoteBox is a graphical tool used to manage remote servers or local VirtualBox virtual machines. Although the management interface of VirtualBox is sufficient to meet most of the usage requirements, it is a pity
Starting from a USB flash drive and installing Kali is our favorite and fastest (easy) method to run Kali. to solve this problem, we first need to clone the Kali ISO to the USB flash drive. if you often use the Kali Linux USB flash drive, read the
In order to meet business needs and ensure service availability, some nginx jump rules configured in the work have been erased from the company's business information and hope to help everyone.
1. when an exception occurs on the backend server, the
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