In Linux system administration and operations, we often need to run various commands and scripts. Some commands generate a large amount of output, while others may frequently report errors, affecting the readability of logs or consuming storage space. Efficiently discarding unnecessary output and error messages is a skill that Linux operations engineers must master. This … Read more
1、ls command is an abbreviation for list. The ls command can be used not only to view the files contained in a linux directory but also to check file permissions (including directory, folder, and file permissions) and to view directory information, etc. Common parameter combinations: ls -a lists all files in the directory, including hidden … Read more
Click the blue “Most Programmer” to follow me! Add a “star“, every day at 18:03 to learn technology together Redirection Standard input stdin: code is 0, use < or <<Standard output stdout: code is 1, use > or >>Standard error output stderr: code is 2, use 2> or 2>>Special syntax: write both stdout and stderr … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with the note [Public Account] for faster access 1. ls Command Syntax: ls [options] [directory or file] Function: For directories, this command lists all subdirectories and files within that directory. For files, it lists the file names … Read more
1. Basic Syntax ansible <target host or group> -m <module name> -a "<module parameters>" •<span><target host or group></span>: Can be a host, host group in Inventory, or <span>all</span> to indicate all hosts.•<span>-m <module name></span>: Specifies the module to use (e.g., <span>ping</span>, <span>shell</span>, <span>yum</span>, etc.).•<span>-a "<module parameters>"</span>: Parameters passed to the module. 2. Common Options Option … Read more
Reply “001” below in the public account to obtain the 154-page Linux study notes compiled by Ke Gan. Introduction I have been struggling in the operations and maintenance field for several years. I still remember when I started, I only knew how to use some simple commands, and when writing scripts, I made them as … Read more
Click the blue text above to follow us Overview This article discusses the relationship and role of the system kernel and the Bash interpreter, how to correctly execute Linux commands, and common troubleshooting methods. Experienced operations and maintenance personnel can appropriately combine commands and parameters to make Linux character commands more flexible while relatively reducing … Read more
One of the more complicated aspects of Linux is that many tasks must be controlled via commands. However, this is also a reason many people enjoy it, as the commands tend to be concise yet powerful. The author has compiled relevant articles to gradually summarize for future learning and reference. If there are any errors, … Read more
Linux | Red Hat Certification | IT Technology | Operations Engineer 👇Join our technical exchange QQ group with the note 【Official Account】 for quicker access 1. What is Linux 1. System Programming & Network Programming: Linux itself provides some APIs for programmers to call to complete more complex programming tasks (such as file operations, multithreading, … Read more
01 Content Summary Content validity TCP/IP Illustrated, Volume 1: Protocols mainly discusses the TCP/IP protocol, explaining the reasons for the definition of the TCP/IP protocol suite with numerous examples, as well as its application and operation in various operating systems. The second edition retains Stevens’ excellent knowledge system and writing style, while new author Kevin … Read more