rsync cron job example

Understand cron concepts The cron daemon is a small subsystem composed of utilities and configuration files. cron of a certain style can be found in almost all UNIX-like systems. CronComponents include the daemon itself, a set of system-wide

Article Title: Rsync introduction to file processing commands. 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.

After Rsync completes data backup, this operation will be automatically terminated. For this purpose, it is best to add a "-a" option for files on the basis of the above command) and a "-e" option to specify the remote shell program to ensure

Common ansible module usage Ansible provides many modules by default. In Linux, we can run the ansible-doc-l command to check which modules are supported by ansible, you can use the ansible-doc-s Module name to view the parameters available for this

As we all know, in computer science, SHELL is similar to command.com under DOS. It receives user commands and calls corresponding applications. At the same time, it is also a programming language as a command language. it interactively interprets

As a command language, it interactively interprets and executes user-entered commands or automatically interprets and executes a set series of commands; Program Design Language, which defines various variables and parameters and provides many

How to use shell scripts in PHP. As a command language, it interactively interprets and executes user-entered commands or automatically interprets and executes a set of commands in advance. as a programming language, it defines various changes as

SSH key authentication Password-based security verification [[email protected] ~]# ssh 10.0.0.41 hostname[email protected]‘s password:backup[[email protected] ~]# ssh 10.0.0.41 whoami[email protected]‘s password:root[[email protected] ~]# ssh [email 

All of these commands derive a subprocess that runs the commands or scripts that you specify, and each child process captures them when the command output is written to standard output (stdout). shell_exec () The shell_exec () command line is

PHP Tutorial: how to use shell scripts in PHP. As we all know, in computer science, SHELL is similar to command.com under DOS. It receives user commands and calls corresponding applications. It is also a programming language. We all know that in