IntroductionLow-power IoT solutions enable devices to operate remotely for extended periods without direct power supply. Recently, the market demand for low-power Linux IoT devices is expected to continue growing, and the i.MX 91 is well-suited for this market segment. The NXP i.MX 91 processor is an application processor based on the Arm Cortex-A55 core, designed … Read more
In Linux operations, mastering key commands can significantly enhance troubleshooting and system management efficiency. Whether it’s server lag, network anomalies, or log analysis and performance optimization, the right commands can help you quickly identify and resolve issues. This article compiles 20 of the most practical Linux commands, covering system monitoring, network diagnostics, log analysis, and … Read more
01 About the Three Musketeers of Linux grep: Filters keyword information data. Mainly used to search for data within text. sed: Edits text data and modifies the original file content. awk: Filters and extracts data from files, and can format the output. awk can also present the processed data in a more visually appealing way. … Read more
If your server’s memory usage is too high, causing slow performance or crashes, you can try the following Linux command to quickly free up cached memory: # This parameter can be used to instruct the kernel to actively free memory caches, but it will not affect running programs. sync; echo 3 > /proc/sys/vm/drop_caches Command Explanation … Read more
<span>pgrep</span> and <span>grep</span> are two different commands in the Linux system. Although their names are similar, they have significant differences in functionality and usage scenarios. Here are their core differences: <span>pgrep</span> is an acronym that stands for “Process-ID Global Regular Expressions Print”. <span>grep</span> is an acronym for “Global Regular Expressions Print”, meaning global regular expression … Read more
Feeling unwell, I initially thought of skipping this update. However, I happened to meet a security guard who was fiddling with his vegetable pot. After chatting for a while and seeing him remove some plants he deemed worthless, I took one to plant on the third-floor flower bed. Even if it only lasts three seasons, … Read more
Follow “Operations Interview Insights” Click the “⭐ Star” on the left to receive immediate updates on articles In Linux systems, both ps -ef | grep java and jps -l are methods used to view Java processes, but they have some important differences. ps -ef | grep java Command: ps is a command used to display … Read more
Commands related to the file system in Linux are summarized as follows: 1 Environment Operating System: Ubuntu 22.04.5 LTS 2 df -h, to check all mounted points 3 df -h /, to check the mount point of any directory 4 df -hT, to check the file system type of the mounted points 5 mount -l, … Read more
In the complex world of Linux, processes are the core of system operation, each identified by a unique “Process ID” (PID). Whether a system administrator is troubleshooting runaway processes or a developer is debugging an application, knowing how to map a PID to its corresponding process name is a fundamental skill. Understanding PID and Process … Read more
1. Common Disk Management Commands Command Description Core Purpose df Displays disk space usage of file systems View overall disk usage and remaining space du Counts disk usage of files/directories Analyze storage usage of specific directories or files fdisk Disk partition management tool Create, delete, and adjust disk partitions mkfs Formats a disk partition to … Read more