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FTP, NFS, SAMBA system services 1, rsync hosted xinetd 1. Why service hosting Independent service: independent startup script ssh ftp nfs dns Dependent service: there is no independent startup script. rsync telnet depends on xinetd service (independent service) 2. How can rsync be managed by xinetd service? Step 1: install xinetd service ...

summary At present, in the kernel driver code, it is no longer recommended to use printk directly to add print information, but to use dev_info，dev_dbg，dev_err and other functions, although these dev_ The essence of XXX function is printed with printk, but compared with printk: Support printing module information and dev informationSupport ...

Manage run levels RHEL6: operation level 300 0: shutdown 0 services 1: Single user mode (implementation of basic functions, cracking Linux passwords) 50 services 2: Multi user character interface (network not supported) 80 services 3: The multi-user character interface (supporting network) server has 100 service levels by default 4: 0 ser ...

Building Vim from source code introduction The thing is like this, because I'm a heavy user of Vim.. However, the version that can be installed or comes with on most systems is an older version, possibly 7.0 X or something. Or you need to use some features or functions of Vim, but the program built for you by others is not enabled, which is ...

Cluster planning HostIPfunctioncentos01192.168.52.221mastercentos02192.168.52.222segmentcentos03192.168.52.223segment It is a cluster composed of three machines in total, and the standby node is not set up System environment nameexplainoperating systemCentos7GreenplumGreenplum 6.17JavaJDK8GCCGCC 4.8.5 Modify system files Modify the system r ...

RH358 provides file based networked storage – automated provisioning of file based storage This chapter describes how to use Ansible to provide file based network storage. This demonstration can also make better use of Ansible. 1. Deploy NFS server using Ansible The following is a basic overview of the tasks required to deploy ...

Introduction to Linux distribution Linux branch reference website: http://futurist.se/gldt/ Common Linux distributions debian system: Ubuntu, Deepin, Mint**slackware: openSUSEredhat: Fedora, CentOS, RHEL, Oracle Enterprise What Linux distributions have in common: the Linux kernel Linux has many distributions, but they are all co ...

I Shell background 1.1 GNU plan Tips: The GNU Project is a free software, mass collaboration project that Richard Stallman announced on September 27, 1983. Its goal is to give computer users freedom and control in their use of their computers and computing devices by collaboratively developing and publishing software that gives everyon ...

Reference address: Introduction to awk awk is an application for processing text files. Almost all Linux systems come with this program. It processes each line of the file in turn and reads each field in it. awk may be the most convenient tool for text files with the same format per line, such as logs and CSV. 1. Basic usage The basic ...

Stack position in memory Operating system kernel Stack area: the place where local variables are stored during program operation Grow down (high – > low) Shared library mapping area: when a program is dynamically linked, its dependent libraries will be mapped to this area Heap area: malloc or new applies for new space, whic ...