Learn Together for a Lifetime Here is Programmer Android This article mainly introduces some knowledge points in Android development. By reading this article, you will gain the following content: 1. cd command 2. –help command 3. ls command 4. touch command 5. mkdir command 6. pwd command 7. echo command 8. cat command 9. Tab … Read more
Linux<span>pidof</span> Command 1. Overview In a Linux system, a process is an instance of a program that is currently running. Each process has a unique Process ID (PID). When performing system administration, performance debugging, resource control, and security protection, it is often necessary to know the PID corresponding to a specific program.<span>pidof</span> is a command … Read more
In Linux systems, the & symbol is a very useful tool for running tasks in the background. It allows you to continue executing other operations in the terminal while performing long-running tasks. Today, we will learn about this super practical symbol—&.1. What is the & Symbol?The & symbol is used in the Linux command line … Read more
1. Introduction to Linux Linux is an open-source Unix-like operating system kernel, first released by Linus Torvalds in 1991. Today, Linux has become a mainstream operating system in fields such as servers, embedded devices, and supercomputers. Linux Distributions Ubuntu – A popular distribution suitable for beginners CentOS/RHEL – Commonly used in enterprise-level servers Debian – … Read more
Recently, someone asked how to test serial communication on an RK3588 that had Linux installed in our lab. I spent quite some time figuring it out, and below I will share the method with you.Tools required: Tabby (for SSH connection), RK3588, monitor.The prerequisite is that you have already installed the Ubuntu system to proceed with … Read more
Install the following plugins: Method 1: Install via Command Line: opkg update # Update package opkg install kmod-usb-storage block-mount samba36-server luci-app-samba ntfs-3g The key plugin that enables the “Mount Points” menu is luci-app-samba. The others are necessary plugins for mounting NTFS formatted disks. Method 2: Using the Web Management Interface: Go to: System -> Software … Read more
Installing plugins on the new version of OpenWRT has become very convenient, allowing for online installation of plugins. However, for older firmware, installation must be done via command line.Online Installation1. In the OpenWRT menu, click on “System” -> “Software Packages”, enter the desired plugin in the filter, and click to search for the package.2. After … Read more
(Click the public account above to quickly follow) Source:ggjucheng Link: http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2856896.html Introduction grep (global search regular expression (RE) and print out the line) is a powerful text search tool that can search text using regular expressions and print out the matching lines. The grep family in Unix includes grep, egrep, and fgrep. The commands egrep … Read more
(Click the public account above to quickly follow) From: cnblogs Link: http://www.cnblogs.com/me115/p/3427319.html This article will introduce the most commonly used tools for text processing in Shell under Linux: find, grep, xargs, sort, uniq, tr, cut, paste, wc, sed, awk; The examples and parameters provided are the most commonly used and practical; My principle for using … Read more
【Summary】 Sometimes you may want to analyze your program based on the following parameters: the time spent by the program in user mode, the time spent by the program in kernel mode, the average memory usage of the program, etc. On Linux, we have a utility specifically designed for this purpose called “time”. The “time” … Read more