what chroot

In some PHP built-in functions (such as mkdir), adding @ at the front can mask the error thrown by the function, so how does the custom function do this? I tried the throw. New exception and Trigger_error cannot be added by the @ Mask: So, for

Determines whether the directory is empty, true is null, false is not empty function Is_empty_dir ($fp) {$H = @ opendir ($fp), $i =0, while ($_file=readdir ($H)) {$i + +;} Closedir ($H); if ($i >2) {return false;} Else{return true;}} 1. Determine if

Tool CD production notes-general Linux technology-Linux programming and kernel information, the following is a detailed description. I. Refill knoppix Knoppix is a debian-based linux operating on a CD. There are a lot of articles about knoppix

From the technical point of view, a few requirements: 1, from the security point of view, SFTP will be more secure a little more 2, online server to provide on-line services, users need to control, only let users in their home directory activity 3,

1 Introduction 2 Pre-installation preparations download vmware workstation Download the files required for Gentoo knowledge points 1 We have downloaded a x86 architecture-based installation package

When dealing with various failures in the Linux system, the symptoms of the failure are the first to be discovered, and the cause of the failure is the key to eventual troubleshooting. Familiar with the Linux system log management, understand the

Long-term use of Windows and Ubuntu dual system, it is likely to encounter a heavy system, or other ways to join the partition, causing the system to restart:GRUB Loadingerror:unknow Filesystemgrub rescue>Reprint Please specify source:

Troubleshooting and remediation techniques for Linux systemsI found that the Linux system in the boot process will have some failures, causing the system to not start normally, I wrote here a few application of single user mode, Grub command

This article describes how to use the Linux rescue mode-general Linux technology-Linux technology and application information. For more information, see the following section. When the system cannot connect to the single-user mode or the GRUB

Like other large software, the BINDDNS server also has many problems due to its large size and complicated functions. Therefore, the number of system intrusions targeting the BIND Security Vulnerabilities is also greatly increased, and the most

I found that some faults may occur during the Linux system startup, which causes the system to fail to start normally, I have written several fault repair cases for single-user application mode, GRUB command operation, and Linux rescue mode to help

Article Title: Linux system startup fault repair. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. During Linux

Build DNS under CentOS7 DNS (Domain Name System) is a distributed database that maps Domain names and IP addresses on the Internet, allowing users to access the Internet more conveniently. The process of obtaining the IP address corresponding to the

Nothing is more irritating than bootloader bad, give full play to the role of Grub 2, let bootloader work well. Why do you say that? Grub 2 is the most popular bootloader and is used on almost all Linux distributions. Bootloader is a

The concept of SCAN (Single Client Access Name) is introduced in the Oracle 11g RAC cluster, that is, the Single Client Access Name of the cluster. SCAN provides a single host name for the client to access the Oracle database running in the cluster.

The concept of SCAN (Single Client Access Name) is introduced in the Oracle 11g RAC cluster, that is, the Single Client Access Name of the cluster. SCAN provides a single host name for the client to access the Oracle database running in the cluster.

In the previous article, we talked about how to solve the linux Vsftpd server problem. It describes how to write the log information into the system log/var/log/messages and its parameters: syslog_enable = yes/no. This article will be explained

Set up the DNS service in linux and set up the linuxdns Service I will not elaborate on the theoretical knowledge too much here. Need to Know: http://baike.baidu.com/subview/22276/15346050.htm? Fr = aladdin Go to build Software used: Vmware

Security code: Once dreamed similarities go Tianya, back to the head, but found or not put home careFollow-up theory of the verification of graphic details, I will update, I hope you can refer toChapter 11th FTP File Transfer Service1. FTP

First, DNS primary configuration fileA list file for a/etc/hosts-host-contains a list of known hosts (on the local network) if the system's IP is not dynamically generated, it can be used for simple host name resolution (dot