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Zyber@datasoft_tech
16h
#Networking #Router #WiFi #ITSupport #NetworkEngineer #ComputerEngineering #InformationTechnology #TechEducation #CyberSecurity #NetworkSecurity #Infrastructure #SystemAdministration #TechCommunity #DigitalTransformation #ITProfessional #Technology #Innovation #Engineering
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Dhanian πŸ—―οΈ
@e_opore
Jun 12
🐧 Day 11/30 β€” #Linux Everything in Linux is organized within a single directory tree that starts at the root directory (/). Understanding the Linux file system hierarchy is essential for navigating, configuring, and troubleshooting Linux systems. Linux File System Hierarchy – Understanding /bin, /etc, /var, and More Unlike Windows, Linux does not use drive letters like C: or D:. Instead, all files and directories exist under a unified hierarchy. Important Linux Directories: β†’ / The root directory. Everything on the system starts from here. β†’ /bin Contains essential command-line utilities such as: β†’ ls β†’ cp β†’ mv β†’ cat These commands are required for basic system operation. β†’ /etc Stores system-wide configuration files. Examples: β†’ /etc/passwd β†’ /etc/hosts β†’ /etc/ssh/ Administrators frequently work in this directory. β†’ /home Contains personal directories for users. Examples: β†’ /home/john β†’ /home/admin This is where user files, documents, and settings are stored. β†’ /var Stores variable data that changes frequently. Examples: β†’ Logs β†’ Cache files β†’ Mail queues β†’ Databases Important log files are commonly found in: β†’ /var/log/ β†’ /tmp Stores temporary files created by applications and users. Files here may be automatically removed by the system. β†’ /usr Contains installed software, libraries, and user applications. Many programs are stored under: β†’ /usr/bin β†’ /usr/lib β†’ /dev Contains device files representing hardware components. Examples: β†’ Hard drives β†’ USB devices β†’ Printers β†’ /proc A virtual filesystem that provides information about running processes and system resources. Why Understanding the File System Matters: β†’ Navigate Linux efficiently β†’ Locate configuration files quickly β†’ Troubleshoot system issues β†’ Manage servers effectively β†’ Understand how Linux organizes data Mastering the Linux file system hierarchy makes it much easier to administer servers, manage applications, and work confidently from the command line. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #FileSystem #SystemAdministration #DevOps #CloudComputing #OpenSource #Programming #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 11
🐧 Day 10/30 β€” #Linux Linux is a multi-user operating system designed to allow multiple people and services to work securely on the same machine. Managing users properly is one of the most important responsibilities of a Linux administrator. Linux User Management – Adding, Modifying, and Deleting Users Every user in Linux has a unique username, user ID (UID), home directory, and set of permissions. Essential User Management Commands: β†’ useradd β†’ passwd β†’ usermod β†’ userdel β†’ id β†’ whoami Adding a User β†’ sudo useradd john Creates a new user named john. To set a password: β†’ sudo passwd john Linux will prompt you to create and confirm a password. Viewing User Information β†’ id john Displays the user's UID, GID, and group memberships. β†’ whoami Displays the currently logged-in user. Modifying a User β†’ sudo usermod -l johnny john Changes the username from john to johnny. β†’ sudo usermod -aG developers john Adds the user john to the developers group. Deleting a User β†’ sudo userdel john Removes the user account. β†’ sudo userdel -r john Removes the user account and deletes the user's home directory. Understanding User Groups Groups simplify permission management by allowing multiple users to share access to files and resources. Examples: β†’ developers β†’ admins β†’ docker Instead of assigning permissions individually, administrators can manage access through groups. Why User Management Matters: β†’ Improve system security β†’ Control resource access β†’ Manage team environments β†’ Protect sensitive files β†’ Administer Linux servers effectively Mastering user management is a foundational skill for Linux administrators, DevOps engineers, cloud engineers, and cybersecurity professionals. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #UserManagement #SystemAdministration #DevOps #CloudComputing #CyberSecurity #OpenSource #100DaysOfCode
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1,888
Dhanian πŸ—―οΈ
@e_opore
Jun 11
🐧 Day 10/30 β€” #Linux Linux is a multi-user operating system designed to allow multiple people and services to work securely on the same machine. Managing users properly is one of the most important responsibilities of a Linux administrator. Linux User Management – Adding, Modifying, and Deleting Users Every user in Linux has a unique username, user ID (UID), home directory, and set of permissions. Essential User Management Commands: β†’ useradd β†’ passwd β†’ usermod β†’ userdel β†’ id β†’ whoami Adding a User β†’ sudo useradd john Creates a new user named john. To set a password: β†’ sudo passwd john Linux will prompt you to create and confirm a password. Viewing User Information β†’ id john Displays the user's UID, GID, and group memberships. β†’ whoami Displays the currently logged-in user. Modifying a User β†’ sudo usermod -l johnny john Changes the username from john to johnny. β†’ sudo usermod -aG developers john Adds the user john to the developers group. Deleting a User β†’ sudo userdel john Removes the user account. β†’ sudo userdel -r john Removes the user account and deletes the user's home directory. Understanding User Groups Groups simplify permission management by allowing multiple users to share access to files and resources. Examples: β†’ developers β†’ admins β†’ docker Instead of assigning permissions individually, administrators can manage access through groups. Why User Management Matters: β†’ Improve system security β†’ Control resource access β†’ Manage team environments β†’ Protect sensitive files β†’ Administer Linux servers effectively Mastering user management is a foundational skill for Linux administrators, DevOps engineers, cloud engineers, and cybersecurity professionals. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #UserManagement #SystemAdministration #DevOps #CloudComputing #CyberSecurity #OpenSource #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 10
🐧 Day 9/30 β€” #Linux One of Linux's greatest strengths is the ability to connect commands together and control where data flows. Instead of manually copying output between programs, Linux allows commands to communicate seamlessly. Linux Redirection and Pipes – stdin, stdout, stderr and | Every Linux command works with three standard data streams: β†’ stdin (Standard Input) β†’ stdout (Standard Output) β†’ stderr (Standard Error) Understanding these streams is essential for automation, scripting, and system administration. stdin (Standard Input) stdin is the input a command receives. Example: β†’ sort < names.txt The contents of names.txt are provided as input to the sort command. stdout (Standard Output) stdout is the normal output generated by a command. Example: β†’ ls > files.txt Saves the output of ls into files.txt instead of displaying it on the screen. stderr (Standard Error) stderr contains error messages generated by commands. Example: β†’ ls missingfile 2> errors.txt Saves error messages to errors.txt. Redirection Operators β†’ > = Overwrite output to a file β†’ >> = Append output to a file β†’ < = Read input from a file β†’ 2> = Redirect error output Examples: β†’ echo "Hello Linux" > message.txt Creates a file and writes text into it. β†’ echo "More text" >> message.txt Appends text to an existing file. Pipes (|) The pipe operator (|) sends the output of one command directly as input to another command. Example: β†’ ls | grep ".txt" Lists only text files. β†’ ps aux | grep nginx Finds running nginx processes. β†’ cat users.txt | sort Sorts the contents of a file. Why Redirection and Pipes Matter: β†’ Automate repetitive tasks β†’ Combine multiple commands efficiently β†’ Filter and process large amounts of data β†’ Build powerful shell scripts β†’ Troubleshoot systems more effectively Mastering redirection and pipes is a major step toward becoming productive in the Linux command line environment. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #ShellScripting #Terminal #DevOps #SystemAdministration #OpenSource #Programming #100DaysOfCode
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Gustav Blomberg@blombergG__
Jun 11
Stort grattis till Ludvikas Ida Svensson och Denniz Gester fΓΆr dubbla guld pΓ₯ Yrkes-SM! πŸ₯‡πŸ₯‡ Extra kul att Denniz, som tog guld inom IT-nΓ€tverk & systemadministration, studerar pΓ₯ fristΓ₯ende NTI Gymnasiet. πŸ’»πŸ› οΈ nyaludvikatidning.se/ludvika…

Dubbelt guldjubel fΓΆr Ludvika pΓ₯ Yrkes-SM – SΓ₯ kΓ€nns det efter vinsterna

β€’ Det vΓ€ntar i framtiden β€’ ”En chans man bara fΓ₯r en gΓ₯ng i livet”

nyaludvikatidning.se
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Dhanian πŸ—―οΈ
@e_opore
Jun 10
🐧 Day 9/30 β€” #Linux One of Linux's greatest strengths is the ability to connect commands together and control where data flows. Instead of manually copying output between programs, Linux allows commands to communicate seamlessly. Linux Redirection and Pipes – stdin, stdout, stderr and | Every Linux command works with three standard data streams: β†’ stdin (Standard Input) β†’ stdout (Standard Output) β†’ stderr (Standard Error) Understanding these streams is essential for automation, scripting, and system administration. stdin (Standard Input) stdin is the input a command receives. Example: β†’ sort < names.txt The contents of names.txt are provided as input to the sort command. stdout (Standard Output) stdout is the normal output generated by a command. Example: β†’ ls > files.txt Saves the output of ls into files.txt instead of displaying it on the screen. stderr (Standard Error) stderr contains error messages generated by commands. Example: β†’ ls missingfile 2> errors.txt Saves error messages to errors.txt. Redirection Operators β†’ > = Overwrite output to a file β†’ >> = Append output to a file β†’ < = Read input from a file β†’ 2> = Redirect error output Examples: β†’ echo "Hello Linux" > message.txt Creates a file and writes text into it. β†’ echo "More text" >> message.txt Appends text to an existing file. Pipes (|) The pipe operator (|) sends the output of one command directly as input to another command. Example: β†’ ls | grep ".txt" Lists only text files. β†’ ps aux | grep nginx Finds running nginx processes. β†’ cat users.txt | sort Sorts the contents of a file. Why Redirection and Pipes Matter: β†’ Automate repetitive tasks β†’ Combine multiple commands efficiently β†’ Filter and process large amounts of data β†’ Build powerful shell scripts β†’ Troubleshoot systems more effectively Mastering redirection and pipes is a major step toward becoming productive in the Linux command line environment. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #ShellScripting #Terminal #DevOps #SystemAdministration #OpenSource #Programming #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 9
🐧 Day 8/30 β€” #Linux Linux truly becomes powerful when you can process, search, and manipulate text directly from the command line. System logs, configuration files, source code, and data files can all be analyzed using built-in text-processing tools. Linux Text Processing – grep, sed, awk, and Regular Expressions These tools are essential for developers, system administrators, cybersecurity professionals, and DevOps engineers. grep – Search for Text The grep command searches files for specific words or patterns. Examples: β†’ grep "error" logs.txt Finds all lines containing the word "error". β†’ grep -i "linux" file.txt Performs a case-insensitive search. sed – Stream Editor The sed command is used to modify text without opening a file manually. Examples: β†’ sed 's/Linux/Ubuntu/' file.txt Replaces the first occurrence of Linux with Ubuntu. β†’ sed 's/Linux/Ubuntu/g' file.txt Replaces all occurrences in each line. awk – Data Extraction and Reporting The awk command processes structured text and extracts specific fields. Example: β†’ awk '{print $1}' users.txt Displays the first column from a file. β†’ awk '{print $1, $3}' users.txt Displays selected columns. Regular Expressions (Regex) Regular expressions are patterns used to match text. Common Regex Patterns: β†’ . = Any character β†’ * = Zero or more occurrences β†’ ^ = Start of line β†’ $ = End of line β†’ [0-9] = Any digit β†’ [a-z] = Any lowercase letter Example: β†’ grep "^[0-9]" file.txt Finds lines that start with a number. Why These Tools Matter: β†’ Search large log files quickly β†’ Automate text manipulation β†’ Extract valuable data from files β†’ Analyze server activity β†’ Build powerful shell scripts Mastering grep, sed, awk, and regular expressions can save hours of manual work and is one of the defining skills of advanced Linux users. 🐧 Grab the Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #grep #sed #awk #Regex #DevOps #SystemAdministration #100DaysOfCode
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3dGameMan@3dGameMan
Jun 10
Supercharge Windows 11 youtu.be/O0FggMcZH_A #Windows11 #LowLatencyProfile #CPUUpgrade #TechNews2026 #WindowsUpdate #PCPerformance #OSDebloat #ViveTool #StartMenuFix #ProcessorBoost #MicrosoftWindows #PCOptimization #Windows11Tweaks #TechTrends2026 #SystemAdministration
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Amrita EdTech@amritahyd_org
Jun 10
Master Enterprise Linux Administration with RH403! Visit: amritahyd.org/ Click here: skills.ole.redhat.com/en?par…... Enroll Now- 91 93937 33174 #RH403 #RedHat #LinuxAdministration #RedHatSatellite #SystemAdministration #LinuxTraining
6
Jitsi Guide@jitsiguide
Jun 9
πŸ”’ Running your own Jitsi server? Check out our complete Jitsi Admin Security Checklist. πŸ‘‰ jitsi.guide/blog/jitsi-admin… #Jitsi #JitsiMeet #JitsiAdmin #serversecurity #VideoConferencingSolution #opensource #DevOps #SelfHosted #systemadministration #jitsiguide #jitsisupport
πŸ”’ Running your own Jitsi server? Don't forget the security basics. βœ… SSL βœ… Authentication βœ… Firewall rules βœ… Updates βœ… Monitoring βœ… Server hardening Check out our complete Jitsi Admin Security Checklist. πŸ‘‰ https://jitsi.guide/blog/jitsi-admin-guide-secure-server-checklist/ #Jitsi #JitsiMeet #JitsiAdmin #serversecurity #VideoConferencingSolution #opensource #DevOps #CyberSecurity #SelfHosted #systemadministration #jitsiguide #jitsisupport

ALT πŸ”’ Running your own Jitsi server? Don't forget the security basics. βœ… SSL βœ… Authentication βœ… Firewall rules βœ… Updates βœ… Monitoring βœ… Server hardening Check out our complete Jitsi Admin Security Checklist. πŸ‘‰ https://jitsi.guide/blog/jitsi-admin-guide-secure-server-checklist/ #Jitsi #JitsiMeet #JitsiAdmin #serversecurity #VideoConferencingSolution #opensource #DevOps #CyberSecurity #SelfHosted #systemadministration #jitsiguide #jitsisupport
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10
Sazan Consulting Inc@Sazanconsultin
Jun 9
Launch Your IT Career! Become the versatile IT professional modern companies are looking for. Call 6473131970 Email info@sazanconsulting.com Visit sazanconsulting.com/it-suppo… #ITCareer #CloudAdmin #SysAdmin #TechSkills #SazanConsulting #SystemAdministration #ITProfessionals #Canada
1
2
Dhanian πŸ—―οΈ
@e_opore
Jun 9
🐧 Day 8/30 β€” #Linux Linux truly becomes powerful when you can process, search, and manipulate text directly from the command line. System logs, configuration files, source code, and data files can all be analyzed using built-in text-processing tools. Linux Text Processing – grep, sed, awk, and Regular Expressions These tools are essential for developers, system administrators, cybersecurity professionals, and DevOps engineers. grep – Search for Text The grep command searches files for specific words or patterns. Examples: β†’ grep "error" logs.txt Finds all lines containing the word "error". β†’ grep -i "linux" file.txt Performs a case-insensitive search. sed – Stream Editor The sed command is used to modify text without opening a file manually. Examples: β†’ sed 's/Linux/Ubuntu/' file.txt Replaces the first occurrence of Linux with Ubuntu. β†’ sed 's/Linux/Ubuntu/g' file.txt Replaces all occurrences in each line. awk – Data Extraction and Reporting The awk command processes structured text and extracts specific fields. Example: β†’ awk '{print $1}' users.txt Displays the first column from a file. β†’ awk '{print $1, $3}' users.txt Displays selected columns. Regular Expressions (Regex) Regular expressions are patterns used to match text. Common Regex Patterns: β†’ . = Any character β†’ * = Zero or more occurrences β†’ ^ = Start of line β†’ $ = End of line β†’ [0-9] = Any digit β†’ [a-z] = Any lowercase letter Example: β†’ grep "^[0-9]" file.txt Finds lines that start with a number. Why These Tools Matter: β†’ Search large log files quickly β†’ Automate text manipulation β†’ Extract valuable data from files β†’ Analyze server activity β†’ Build powerful shell scripts Mastering grep, sed, awk, and regular expressions can save hours of manual work and is one of the defining skills of advanced Linux users. 🐧 Grab the Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #grep #sed #awk #Regex #DevOps #SystemAdministration #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 8
🐧 Day 7/30 β€” #Linux Every application running on Linux is a process. Understanding how to view, manage, and stop processes is a critical skill for developers, system administrators, and DevOps engineers. Linux Processes – Viewing, Managing, and Killing Processes A process is simply a program that is currently running on your system. Each process is assigned a unique Process ID (PID) that Linux uses to track and manage it. Essential Process Commands: β†’ ps β†’ top β†’ htop β†’ pidof β†’ kill β†’ killall Viewing Processes β†’ ps Displays currently running processes. β†’ ps aux Shows detailed information about all running processes. β†’ top Provides a real-time view of CPU usage, memory usage, and active processes. β†’ htop An interactive and user-friendly alternative to top. Finding Process IDs β†’ pidof nginx Returns the PID of a running process. Stopping Processes β†’ kill PID Sends a termination signal to a specific process. Example: β†’ kill 1234 Stops the process with PID 1234. Force Killing a Process β†’ kill -9 PID Immediately terminates a process that refuses to stop. Example: β†’ kill -9 1234 Killing Processes by Name β†’ killall firefox Terminates all Firefox processes. Why Process Management Matters: β†’ Monitor system performance β†’ Troubleshoot application issues β†’ Free system resources β†’ Manage server workloads β†’ Control background services effectively Mastering process management is essential because Linux systems constantly run hundreds of processes behind the scenes. 🐧 Grab the Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #SystemAdministration #DevOps #OpenSource #Terminal #CloudComputing #Programming #100DaysOfCode
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22
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6,526
Dhanian πŸ—―οΈ
@e_opore
Jun 8
🐧 Day 7/30 β€” #Linux Every application running on Linux is a process. Understanding how to view, manage, and stop processes is a critical skill for developers, system administrators, and DevOps engineers. Linux Processes – Viewing, Managing, and Killing Processes A process is simply a program that is currently running on your system. Each process is assigned a unique Process ID (PID) that Linux uses to track and manage it. Essential Process Commands: β†’ ps β†’ top β†’ htop β†’ pidof β†’ kill β†’ killall Viewing Processes β†’ ps Displays currently running processes. β†’ ps aux Shows detailed information about all running processes. β†’ top Provides a real-time view of CPU usage, memory usage, and active processes. β†’ htop An interactive and user-friendly alternative to top. Finding Process IDs β†’ pidof nginx Returns the PID of a running process. Stopping Processes β†’ kill PID Sends a termination signal to a specific process. Example: β†’ kill 1234 Stops the process with PID 1234. Force Killing a Process β†’ kill -9 PID Immediately terminates a process that refuses to stop. Example: β†’ kill -9 1234 Killing Processes by Name β†’ killall firefox Terminates all Firefox processes. Why Process Management Matters: β†’ Monitor system performance β†’ Troubleshoot application issues β†’ Free system resources β†’ Manage server workloads β†’ Control background services effectively Mastering process management is essential because Linux systems constantly run hundreds of processes behind the scenes. 🐧 Grab the Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #LinuxCommands #SystemAdministration #DevOps #OpenSource #Terminal #CloudComputing #Programming #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 7
🐧 Day 6/30 β€” #Linux Every Linux user eventually needs to edit configuration files, scripts, logs, and application settings. Knowing how to use a text editor is a fundamental Linux skill. Editing Files in Linux – Vi, Vim, Nano, and GUI Editors Linux offers both terminal-based and graphical text editors, each designed for different workflows and experience levels. Popular Linux Editors: β†’ Vi β†’ Vim β†’ Nano β†’ GUI Editors Vi Editor Vi is the classic text editor found on almost every Linux system. Benefits: β†’ Lightweight β†’ Available by default on most distributions β†’ Useful for server administration Basic Commands: β†’ i = Enter insert mode β†’ Esc = Exit insert mode β†’ :w = Save file β†’ :q = Quit editor β†’ :wq = Save and quit Vim Editor Vim (Vi Improved) extends Vi with advanced features. Benefits: β†’ Syntax highlighting β†’ Auto-completion β†’ Powerful navigation shortcuts β†’ Plugin ecosystem Many developers and system administrators prefer Vim for daily work. Nano Editor Nano is one of the easiest Linux text editors for beginners. Basic Commands: β†’ Ctrl O = Save file β†’ Ctrl X = Exit editor β†’ Ctrl K = Cut line β†’ Ctrl U = Paste line Nano is ideal if you're new to Linux and want a simple editing experience. GUI Editors Desktop Linux distributions also provide graphical editors such as: β†’ Gedit β†’ Kate β†’ Mousepad These editors work similarly to Notepad or other desktop text editors. Why This Matters: β†’ Edit configuration files β†’ Write shell scripts β†’ Manage server settings β†’ Update application files β†’ Become comfortable working entirely from the terminal Learning at least one terminal editor is essential because many Linux servers operate without a graphical interface. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #Vim #Vi #Nano #Terminal #OpenSource #DevOps #SystemAdministration #100DaysOfCode
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44
203
10,091
Dhanian πŸ—―οΈ
@e_opore
Jun 7
🐧 Day 6/30 β€” #Linux Every Linux user eventually needs to edit configuration files, scripts, logs, and application settings. Knowing how to use a text editor is a fundamental Linux skill. Editing Files in Linux – Vi, Vim, Nano, and GUI Editors Linux offers both terminal-based and graphical text editors, each designed for different workflows and experience levels. Popular Linux Editors: β†’ Vi β†’ Vim β†’ Nano β†’ GUI Editors Vi Editor Vi is the classic text editor found on almost every Linux system. Benefits: β†’ Lightweight β†’ Available by default on most distributions β†’ Useful for server administration Basic Commands: β†’ i = Enter insert mode β†’ Esc = Exit insert mode β†’ :w = Save file β†’ :q = Quit editor β†’ :wq = Save and quit Vim Editor Vim (Vi Improved) extends Vi with advanced features. Benefits: β†’ Syntax highlighting β†’ Auto-completion β†’ Powerful navigation shortcuts β†’ Plugin ecosystem Many developers and system administrators prefer Vim for daily work. Nano Editor Nano is one of the easiest Linux text editors for beginners. Basic Commands: β†’ Ctrl O = Save file β†’ Ctrl X = Exit editor β†’ Ctrl K = Cut line β†’ Ctrl U = Paste line Nano is ideal if you're new to Linux and want a simple editing experience. GUI Editors Desktop Linux distributions also provide graphical editors such as: β†’ Gedit β†’ Kate β†’ Mousepad These editors work similarly to Notepad or other desktop text editors. Why This Matters: β†’ Edit configuration files β†’ Write shell scripts β†’ Manage server settings β†’ Update application files β†’ Become comfortable working entirely from the terminal Learning at least one terminal editor is essential because many Linux servers operate without a graphical interface. 🐧 Grab Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #Vim #Vi #Nano #Terminal #OpenSource #DevOps #SystemAdministration #100DaysOfCode
Dhanian πŸ—―οΈ
@e_opore
Jun 5
🐧 Day 5/30 β€” #Linux Security is one of Linux's greatest strengths. Every file and directory in Linux has permissions that determine who can read, write, or execute it. Linux File Permissions – Mastering chmod, chown, and chgrp Understanding permissions is essential for protecting files, managing users, and administering servers securely. Viewing Permissions Use the command: β†’ ls -l Example output: -rwxr-xr-- This permission string is divided into three groups: β†’ Owner permissions β†’ Group permissions β†’ Others permissions Permission Symbols: β†’ r = Read (4) β†’ w = Write (2) β†’ x = Execute (1) Important Commands: β†’ chmod β€” Change file permissions β†’ chown β€” Change file owner β†’ chgrp β€” Change file group Examples: β†’ chmod 755 script.sh Permissions become: Owner: rwx Group: r-x Others: r-x β†’ chmod 644 file.txt Permissions become: Owner: rw- Group: r-- Others: r-- β†’ chown john file.txt Changes the file owner to john. β†’ chgrp developers file.txt Changes the file group to developers. Why File Permissions Matter: β†’ Protect sensitive files β†’ Prevent unauthorized access β†’ Secure Linux servers β†’ Control application execution β†’ Manage multi-user systems effectively Mastering chmod, chown, and chgrp is one of the most important skills for Linux administrators, DevOps engineers, and backend developers. 🐧 Grab the Linux Ebook: codewithdhanian.gumroad.com/…
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3dGameMan@3dGameMan
Jun 1
Remove Microsoft Copilot youtu.be/umtROnZh-Do #MicrosoftCopilot #UninstallCopilot #WindowsAI #GroupPolicy #RegistryTweak #Windows11Pro #TechNews2026 #OSDebloat #PCOptimization #SystemAdministration #WindowsRegistry #BloatwareRemoval #TechTrends2026 #MicrosoftUpdate
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Dhanian πŸ—―οΈ
@e_opore
Jun 1
πŸŽ‰ Happy New Month! Linux tutorial series, structured as Day 1 through Day 30: 1. Day 1: What is Linux – Understanding the Linux Kernel and Distributions 2. Day 2: Installing Linux – Dual Boot, Virtual Machine, or WSL 3. Day 3: Navigating Linux – Essential Linux Commands for Directories and Paths 4. Day 4: Managing Files in Linux – Create, Copy, Move, and Remove 5. Day 5: Linux File Permissions – Mastering chmod, chown, and chgrp 6. Day 6: Editing Files in Linux – Vi, Vim, Nano, and GUI Editors 7. Day 7: Linux Processes – Viewing, Managing, and Killing Processes 8. Day 8: Linux Text Processing – grep, sed, awk, and Regular Expressions 9. Day 9: Linux Redirection and Pipes – stdin, stdout, stderr and | 10. Day 10: Linux User Management – Adding, Modifying, and Deleting Users 11. Day 11: Linux File System Hierarchy – Understanding /bin, /etc, /var, and More 12. Day 12: Linux Disk Management – Partitioning, Formatting, and Mounting 13. Day 13: Linux Boot Process – BIOS to Initramfs to systemd 14. Day 14: Linux Services with systemd – systemctl, journalctl, and Targets 15. Day 15: Linux Networking Basics – ip, ifconfig, ping, and netstat 16. Day 16: Linux Firewall – Mastering iptables, ufw, and firewalld 17. Day 17: Linux Secure Shell (SSH) – Remote Access and Key Authentication 18. Day 18: Linux Package Management – APT, YUM, DNF, and Pacman 19. Day 19: Linux Scheduling – Cron, Crontab, and At for Automation 20. Day 20: Linux Logging and Monitoring – rsyslog, logrotate, and journalctl 21. Day 21: Linux Performance Tuning – top, htop, vmstat, and iostat 22. Day 22: Linux Bash Scripting – Variables, Loops, and Conditionals 23. Day 23: Linux Environment Variables – PATH, HOME, and Custom Variables 24. Day 24: Linux Advanced Permissions – SUID, SGID, Sticky Bit, and ACL 25. Day 25: Linux Security – SELinux, AppArmor, and Auditing with auditd 26. Day 26: Linux Containers – LXC, LXD, and Docker on Linux 27. Day 27: Linux Virtualization – KVM, QEMU, and libvirt Basics 28. Day 28: Linux Troubleshooting – strace, ltrace, lsof, and Recovery Mode 29. Day 29: Linux Hardening – Secure Configuration and Best Practices 30. Day 30: Linux Final Project – Building a Production-Ready Linux Server Grab the Linux Ebook: codewithdhanian.gumroad.com/… #Linux #LinuxTutorial #DevOps #SystemAdministration #OpenSource #Programming #Developer #CodeNewbie #100DaysOfCode #LinuxLearning #TechEducation #SoftwareEngineering #CloudComputing #CyberSecurity #BashScripting Follow @e_opore on X to learn more.
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Vivek | Cybersecurity
@VivekIntel
May 31
πŸ–₯️ OPERATING SYSTEMS TIMELINE: FROM UNIX TO HARMONYOS 1.πŸ–₯️ UNIX β€” 1969 2.πŸ’Ώ MS-DOS β€” 1981 3.🍎 Mac OS β€” 1984 4.πŸͺŸ Windows β€” 1985 5.🐧 Linux β€” 1991 6.πŸ“¦ Debian β€” 1993 7.🎩 Red Hat Linux β€” 1994 8.πŸ–₯️ Windows 95 β€” 1995 9.πŸ“± iOS β€” 2007 10.πŸ€– Android β€” 2008 11.🌐 Chrome OS β€” 2011 12.πŸ‰ Kali Linux β€” 2013 13.πŸ“² HarmonyOS β€” 2019 πŸ’‘ Understanding operating systems is fundamental for system administration, software development, cybersecurity, digital forensics, cloud computing, and penetration testing. #OperatingSystems #Linux #CyberSecurity #TechHistory #KaliLinux #SystemAdministration #InfoSec #Technology
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Kevtech IT Support
@KevTechSupport
May 27
They passed the audit at least lol πŸ˜† #itsupportspecialist #desktopsupport #desktopsupporttechnician #careers #cybersecurity #cybersec #systemadmin #systemadministration
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Kevtech IT Support
@KevTechSupport
May 24
Literally me when someone randomly calls me lol πŸ˜† #itsupportspecialist #desktopsupport #desktopsupporttechnician #careers #systemadministrator #systemsengineer #systemengineer #systemadministration
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Kevtech IT Support
@KevTechSupport
May 21
This is hilarious and true lol πŸ˜† Whenever the IT person sits down. You know its going to be a long fix or problem. #itsupportspecialist #desktopsupport #desktopsupporttechnician #careers #systemadministrator #systemengineer #systemadministration
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Kevtech IT Support
@KevTechSupport
May 5
I love teaching. When I first started IT. I created my YouTube channel to teach other people what I learn at work. I wanted to provide easy straightforward information that will help people understand IT. I eventually got hired to teach at a few places like TechSkills Institute EDTECH4D - JOBSKILLSHARE and a community college. Really enjoy teaching because I get to see a student grow and work IT. Seeing someone win and transition over to IT is a win for me. That means that the student is learning something. I don't like use PowerPoint slides and spending my whole day talking to students without any student participation. You need to be creative when it comes to teaching. Otherwise students will find you boring. That was the issue I had at college. It's difficult to teach when the student doesn't find the information fun or interactive. Years later, I still love teaching. I'm currently working on a course and I will be updating my Udemy course. Happy Tuesday! Happy learning. #itsupportspecialist #desktopsupport #desktopsupporttechnician #careers #systemadministrator #systemsengineer #cybersecuirty #cybersec #systemadmin #systemadministration
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Kevtech IT Support
@KevTechSupport
Apr 29
Giving up is the easy option. I refuse to give up. No matter how bad things go. I always try to stay positive even when things don't go my way. I embrace negativity like how I embrace the positivity. Not everything goes your way. Being able to get up after every battle you fought is important. Always keep moving forward. #itsupportspecialist #desktopsupport #desktopsupporttechnician #desktopsupportengineer #systemengineer #systemadministration #systemsengineer #motivation #motivational
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