The VI editor is a powerful text editing tool that has been a staple in the UNIX and Linux environments for decades. While many users are familiar with its basic functionalities, such as opening files and entering text, mastering advanced commands can significantly enhance your productivity and editing efficiency. This guide aims to delve into …
Linux
Linux Tips Mastering Linux Management Basic VI Editor Commands To start vi: Example: vi letter will open a new file called letter to edit, or if letter already exists, open the existing file. Command Effect vi filename Edit filename starting at line 1 vi +n filename Edit filename beginning at line n vi +filename Edit …
Linux Tips Mastering Linux Management Basic Shell Navigation Commands To navigate directories in the shell: Example: cd Documents will change the current directory to Documents. Command Effect cd .. Move up one directory cd ~ Change to the home directory cd – Switch to the previous directory ls -l List files in long format ls …
Linux shell script Tips Mastering Linux shell script Shebang Line To specify the script interpreter: Example: #!/bin/bash at the top of your script tells the system to execute the script with bash. Command Effect #!/bin/bash Specifies bash as the interpreter for the script Variable Declaration To declare a variable: Example: myVar=”Hello World” assigns the string …
In Linux, grep is a powerful text search tool that helps you find specific strings within files. Its basic syntax is grep [options] ‘search_string’ filename. For example, if you want to find all lines containing the word “error” in a file named example.txt, you can use the following command: grep ‘error’ example.txt You can also …
For Linux administrators, checking the status of remote ports is a routine yet essential task. 🔍 In our quest to streamline this process, we’ve tested six different methods to assess remote port status. Along the way, we uncovered two unexpected techniques that offer remarkable benefits. Curious about what we found? Dive in to discover how …
If you’re dealing with permission issues on your server and come across advice suggesting you use chmod 777 on your directory, it’s crucial to understand what this command does and why it’s generally unsafe. Here’s a simplified explanation of Linux file permissions and why you should avoid using chmod 777. We also created an infographic …
When I first began managing Linux servers, one of the most perplexing metrics I encountered was the load average. At first glance, the numbers seemed abstract and elusive — what did a load average of 2.5 or 5.0 actually mean for system performance? I vividly remember the first time I was faced with a server …
When I first started working with Linux servers, managing time synchronization seemed like a daunting task. My team had always relied on the traditional ntpd service for Network Time Protocol (NTP), and it worked well enough. But when Red Hat Enterprise Linux (RHEL) 8 came around and the focus shifted to chronyd from the Chrony …