Linux

The server mistakenly deleted the/usr/bin and/usr/sbin directory, and then, copy these two directories from other places, found that many of them are links and other non-standard files, can be copied when the link processing do not know what

If you can try to get into the operating system with a previously backed up Linux boot CD, and then check to see if grub cannot be used, it's going to be a lot easier when your computer is turned on but can't get into the options screen. In Linux to

1, open Sougoupinyin's official website: in Baidu official website or Hao123.com's official website input sougoupinyin, search, open the official website of which 2, in the corresponding column above select "Input Method Linux version"

How do I use the Linux formatting commands? The steps are as follows: Linux formatted Disk command Linux MKFS directive: MKFS Use Rights: Super User How to use: mkfs [-v] [-t fstype] [fs-options] filesys [blocks] [-l lable]

In a Linux system, the root user has the highest privileges, can do anything, delete any unwanted software or files, can be said to be omnipotent. But sometimes the root user can not delete a small file, a seemingly ordinary file, in fact, as long

SELinux greatly enhanced the security of the Linux system, can shut down the user rights in the cage, such as HTTPD services, Apache can only access the/var/www directory, and can only listen to 80 and 443 ports, so can effectively protect against 0-

Quota Displays the space and restrictions that the disk has used. Syntax: Quota [-quvv][user name ...] or quota [-gqvv][group name ...] Supplemental NOTE: Executes the quota instruction, queries the disk space limits, and learns how much space

The use of First Aid disk group for maintenance of First Aid disk group (also known as Boot/root Disk Group) is an essential tool for system administrators. With it can be started and run independently of a A complete Linux system. In fact, there

Now use Linux more and more friends, in Linux to do development first is the need to configure environment variables, the following to configure the Java environment variables for example to introduce three ways to configure environment variables.

Linux is a multi-user system, once someone gets your root user, he can do whatever you want on your system, because the single user has complete control over the system, if the operation is improper or be entered by others, then the consequences

Some users who use Linux systems often encounter situations where the disk space is full, and they have to delete some files. But looking back, it turns out that the total file size of the space, and the total size of the disk is not the same, then

Someone has found an interesting problem with the Linux system, which is that the audio files cannot be played on the web version of the micro-trust public platform. This means that there is no way to listen to the language messages from the other

Because the original installation system design is unreasonable, some zoning is too small, as well as network communication failures and other causes of log file speed growth and other reasons can be displayed as disk space full, resulting in the

For DB Server, it's tricky to delete a large table. If you delete a large table, you can establish a hard link to the. ibd file of the existing table. When multiple file names point to the same node, deleting any one of the filenames is very quick,

After inserting a U disk, follow these steps: 1.fdisk-l/dev/sd* Usually this step will be able to find a U disk, if the U disk has led will also be lit, said to be found. 2. If there is no response to the previous command, or some information

In a virtual host server, there are more than NN station, maybe we have some way to get a webshell, but can not find Apache and other Web server configuration files, find no other Web path, 21f9c57b84szmrkr this time is depressed. If there are

1, configuration system Management (Admin WEB application) Most commercial Java EE servers provide a powerful management interface, and most of them use an Easy-to-understand Web application interface. Tomcat, in its own way, also provides a

The problem of "network security" has begun to arouse the concern of the majority of the world as applications of the Internet have recently swept across the globe, and based on this problem, a "Firewall" (firewall) has been developed so that it can

# from LAN to the firewall host's DHCP packet, to be released, only when the firewall as DHCP to use # $IPTABLES-A input-p udp-i $LAN _iface--dport--sport 68-j # Access all packets from the WAN to the firewall host, check for response packets, and

The built-in firewall mechanism of Linux is implemented through the NetFilter module in kernel (www.netfilter.ort). Linux Kernel uses NetFilter to filter incoming and outgoing packets, NetFilter consists of three rule tables, each of which has many