Linux

Linux runs A specific task after the network is started. In the traditional linux Startup Process, the dependency processing of Service Startup occurs. For example, service B must be started only after service A is started. in this way, service B

Gp Linux-Common commands: run the tail-f * command to check the file size ls-lsh and log *. log displays the last 50 lines of example.txt file. After the file content is added, the new file content is automatically displayed. Tail-n 50-f example.txt

Install JDK 7u40 in Ubuntu Step 1: Download jdk-7-linux-i586.tar.gz [plain] wget-c http://download.oracle.com/otn-pub/java/jdk/7/jdk-7-linux-i586.tar.gz .) Step 2: unzip and install [plain] sudo tar zxvf. /jdk-7-linux-i586.tar.gz-C/usr/lib/jvm

A CentOS operating system was installed to test Nginx Server Load balancer before linux network devices could not be started. My colleague once upgraded the VM and recently tried to test KeepAlived on it. Therefore, the service cannot be connected.

1: For a dual system installed on a hard disk:Linux recognizes Windows partitions, which are not automatically loaded by default. But sometimes in Linux, You need to swap files with Windows partitions, which requires loading it. We can use different

When you enter the address in your browser:Http: // localhost: 8080/If the root directory of your file contains index.html, the browser will display the content of index.html. If no index.html is available, Apache will display the Directory List of

After the resource file is uploaded, the file name is changed to a meaningless character segment to avoid file name conflicts. This character may be generated by MD5 or a string generated by other methods. At this time, the default file name saved

1. If the directory does not have the execution permission for the file attribute, you cannot browse it because you cannot execute the ls and dir commands. For example, drwxr -- r -- 2 root 4096 Feb 10. ssh non-root users cannot browse this

Previous Article: http://www.bkjia.com/ OS /201202/119673.html Summary: I. error message:FATAL: Failed to verify one of the swap directories, Check cache. logFor details. Run 'squid-Z' to create swap directoriesIf needed, or if running Squid for the

The following compares CentOS 5 with FreeBSD 9.0: The built-in gcc of CentOS 5 is gcc (GCC) 4.1.2, and gcc44 (GCC) 4.4.4 can be installed through yum. FreeBSD 9.0 comes with gcc (gcc) 4.2.1. you can install GCC 4.6 through ports (currently 4.6.2) We

When msfconsole is started, there are some errors. Because the problem has been solved, you cannot copy the errors in English. In general, postgresql cannot be started, and msf cannot be connected. .................................... {"Adapter" => "

Refer to this Article. ubuntu linux automatically enters the character InterfaceIn ubuntu 10.04: Method: Sudo vim/etc/default/grubFind this line: GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash"Changed to GRUB_CMDLINE_LINUX_DEFAULT = "text" or "quiet

In linux, if you want to use vim to edit a PDF file, you must convert the PDF file to a txt file before using vim to open it.In linux, you can use pdftotext filename.pdf to convert the corresponding PDF file to a txt file of the same name.Then you

Author Li Wanpeng Previous Article: Introduction to Linux System Administrator (1)  VNC server ConstructionRed Hat Enterprise Linux Server 6.2  1. Install VNC  1. First mount the ISO image to a directory:Sudo mount-t iso9660

Tcpdump, a packet capture tool in linux  This article describes the packet capture tool in linux. The packet capture tool has two advantages: one is snort and the other is tcpdump. This time, we don't mention snort. Although the tool is powerful, it

Sed can only process a single row of data, but does not process multiple rows before. Many code comments are multiline and can be processed with commas (,). Specify two rule expressions separated by commas. sed will start with the first line that

In Linux, the file lock operation is mainly completed through the following two APIs.  # Include Int flock (int fd, int operation ); Or  # Include # Include Int fcntl (int fd, int cmd );Int fcntl (int fd, int cmd, long arg );Int fcntl (int fd, int

1. view the Ubuntu operating system bits:Check whether the system is 32-bit or 64-bit.# Check the number of long digits. the return value is 32 or 64: getconf LONG_BIT.# View the file information. 32-bit indicates 32-bit. 64-bit indicates 64-bit

1. Modify the ip address and gatewaySudo vi/etc/network/interfaces======================================# The loopback network interfaceAuto loIface lo inet loopback # The primary network interfaceAuto eth0 # Eth0 use dhcp# Iface eth0 inet dhcp #

Error while loading shared libraries SolutionDuring program execution, the following errors occur: ./Tests: error while loading shared libraries: xxx. so.0: cannot open shared object file: No such file or directoryThe system does not know which