How to Use Bash read Command: 10 Essential Examples 🐚 If you're writing shell scripts on Linux, mastering the read command is a game changer. This guide breaks down how read makes scripts interactive, flexible, and robust: 💬 Capture user input with ease | pause execution and store responses 🔄 Read into multiple variables | split input across fields 📝 Use -p for inline prompts | cleaner, more concise scripts 🔒 Hide sensitive input with -s | great for passwords & secrets ⏱️ Apply timeouts via -t | scripts don’t wait forever 🔢 Limit characters using -n | enforce input formats 📂 Read from files | loop through lines reliably ➕ Define custom delimiters with -d | parse unusual formats 🌀 Handle multiline input via -r & loops | great for blocks of text ⚠️ Check exit codes & errors | gracefully respond to failures Whether building tools, automations, or admin scripts, these variants of read will help your Bash scripts feel smarter and more user-friendly. Read the full guide → https://lnkd.in/e82tSgai #Bash #ShellScripting #Linux #DevOps #Automation #ProgrammingTips #CLI #Scripting #TechGuide #Voxfor
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Just spent some time digging into a neat Linux trick that's saved me countless hours debugging scripts. There's something satisfying about mastering command-line techniques that make complex workflows feel simple. Ever find yourself running multiple commands and wishing you could capture all that output in one place? Redirecting commands or entire scripts to a file isn't just about saving results—it's about creating a trail of breadcrumbs that helps you understand what happened, when, and why. I've used this for everything from debugging deployment scripts to documenting system configuration processes. What's your go-to method for capturing command-line output? I'm always looking to refine my approach. If you're curious about the techniques mentioned, you can find practical examples in Nick's post. #Linux #ShellScripting #CommandLine #DevOps
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10 Day #Linux boot camp Day 2: Linux Mastery: Day 2 - Essential Commands & Tips Today, we dive into essential Linux commands for linux mastery: day 2 - essential commands & tips. Mastering these will significantly boost your productivity! ✨ `cat`: Concatenate files and print on the standard output. Example: `cat file.txt` ✨ `less`: Opposite of more. Example: `less large_file.log` ✨ `more`: Filter for paging through text. Example: `more document.txt` ✨ `head`: Output the first part of files. Example: `head -n 10 file.txt` ✨ `tail`: Output the last part of files. Example: `tail -f /var/log/syslog` ✨ `nano`: Nano is a small, friendly text editor. Example: `nano config.conf` ✨ `vim`: Vi IMproved, a programmer’s text editor. Example: `vim script.sh` ✨ `chmod`: Change file mode bits. Example: `chmod 755 script.sh` ✨ `chown`: Change file owner and group. Example: `chown user:group file.txt` ✨ `chgrp`: Change group ownership. Example: `chgrp newgroup file.txt` #Linux #LinuxCommands #DevOps #SysAdmin #TechTips #Nano #LinuxAdmin #Groups #FileViewing #LinuxPermissions #TextEditor #UserManagement #LinuxText #LinuxSecurity #Security #LogFiles #LinuxUsers #Vim #Coding #SysAdmin #LinuxTools #FileSecurity #LinuxTips #DevOpsTools #MarvenLouka
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𝐅𝐫𝐨𝐦 𝐂𝐨𝐦𝐦𝐚𝐧𝐝𝐬 𝐭𝐨 𝐒𝐜𝐫𝐢𝐩𝐭𝐬 ⚙️ Once I got comfortable navigating Linux, I wanted to understand what really happens behind the commands and so I started building my own. That’s where 𝐁𝐚𝐬𝐡 𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠 came in. 🔹 First, I wrote simple 𝐟𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐬 that accepted parameters like $1 and $2, learning how Bash passes input and expands variables dynamically: greet() { echo "Hello, $1! Welcome to $2." } 🔹 Then I turned these into 𝐬𝐭𝐚𝐧𝐝𝐚𝐥𝐨𝐧𝐞 𝐬𝐜𝐫𝐢𝐩𝐭𝐬, made them executable with chmod +x, and moved them into /usr/local/bin so I could run them globally from anywhere in the terminal. 🔹 Next, I began exploring arithmetic and logic - scripts that calculate sums or even the 𝐚𝐫𝐞𝐚 𝐚𝐧𝐝 𝐩𝐞𝐫𝐢𝐦𝐞𝐭𝐞𝐫 of a rectangle using user input: sum=$((a + b)) echo "The sum is $sum" 📌 Each step taught me something deeper about how Linux 𝘪𝘯𝘵𝘦𝘳𝘱𝘳𝘦𝘵𝘴 𝘭𝘰𝘨𝘪𝘤, handles variables, and executes instructions. This wasn’t really about memorising syntax it was like a subtle dive into understanding how automation starts. 💻 👉What was the first script you ever wrote, and what did it teach you?
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💻 Automating Backups with a Simple Bash Script! I recently created a small but powerful Linux automation script that performs system backups and even allows easy restoration — all in just a few lines of code. Here’s what it does: ✅ Compresses important files into a dated .tar.gz archive ✅ Verifies successful backup creation ✅ Provides a one-line restore command for easy recovery This kind of automation is a real time-saver for developers and system admins who regularly manage multiple directories or projects. I’ve shared it on GitHub under the name backup_restore.sh, showcasing how simple scripting can make everyday tasks smarter and more reliable. 🔗 https://lnkd.in/gs3MBb5K #Linux #Automation #ShellScript #Bash #DevOps #Backup #OpenSource #GitHub #Scripting #Tech
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👇 🕒 #Day_9 of Learning Linux – Cron Jobs & Scheduling Tasks Today’s topic: Automating tasks using Cron Jobs in Linux ⚙️ Cron is a built-in Linux utility that allows you to schedule scripts, commands, or system tasks to run automatically at fixed times, dates, or intervals — no manual effort needed! 💪 🔹 View Cron Jobs: crontab -l 🔹 Edit Cron Jobs: crontab -e 🔹 Cron Expression Format: * * * * * command_to_execute │ │ │ │ │ │ │ │ │ └── Day of week (0-6) │ │ │ └──── Month (1-12) │ │ └────── Day of month (1-31) │ └──────── Hour (0-23) └────────── Minute (0-59) 🔹 Examples: 0 5 * * * → Run daily at 5 AM */10 * * * * → Run every 10 minutes 0 0 * * 0 → Run every Sunday at midnight 30 8 1 * * → Run on the 1st day of every month at 8:30 AM 🧠 Pro Tip: Always check your cron logs at /var/log/cron or /var/log/syslog to ensure your tasks run correctly! #Linux #Day9 #LearnLinux #CronJobs #Automation #TaskScheduling #SysAdmin #DevOps #LinuxLearningJourney
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💡 Learning Shell Scripting for Automation 🚀 Recently, I’ve been exploring Shell Scripting in Linux — a powerful way to automate daily tasks and manage system operations efficiently. Here’s a simple example I tried: #!/bin/bash # Backup Script Example backup_folder="/home/user/backup" source_folder="/home/user/documents" timestamp=$(date +"%Y-%m-%d_%H-%M-%S") mkdir -p "$backup_folder" cp -r "$source_folder" "$backup_folder/backup_$timestamp" echo "Backup completed successfully at $timestamp" >>>What this script does: Creates a backup folder (if it doesn’t exist) Copies files from the source folder Adds a timestamp for easy tracking #Linux #ShellScripting #Automation #DevOpsLearning #TechJourney
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🚀 Yocto + Raspberry Pi = Full Control over Your Embedded Linux Today, I successfully built a custom Raspberry Pi image using the latest Yocto Project — Scarthgap release 🧩 This hands-on setup really helped me understand how Yocto layers work together to create a clean, modular embedded Linux system. 🧱 Repositories (Scarthgap branch) 🔹 Poky (Core Yocto Framework) 🔗 git://git.yoctoproject.org/poky git clone -b scarthgap git://git.yoctoproject.org/poky 🔹 Meta-OpenEmbedded (Extended Recipes) 🔗 git://https://lnkd.in/gVwtMVzR git clone -b scarthgap git://https://lnkd.in/gVwtMVzR 🔹 Meta-RaspberryPi (Board Support Layer) 🔗 https://lnkd.in/gVtbNPqU git clone -b scarthgap https://lnkd.in/gVtbNPqU --- 🧩 Steps I Followed ⚙️ Initialize the build environment cd poky source oe-init-build-env ➕ Add required layers bitbake-layers add-layer ../meta-openembedded/meta-oe bitbake-layers add-layer ../meta-openembedded/meta-multimedia bitbake-layers add-layer ../meta-openembedded/meta-networking bitbake-layers add-layer ../meta-openembedded/meta-python bitbake-layers add-layer ../meta-raspberrypi 📝 Configure bblayers.conf → add all layers local.conf → set MACHINE = "raspberrypi3" 🚀 Build the image bitbake core-image-sato --- 🎯 Result ✅ Successfully built a bootable SD image (.rpi-sdimg) for Raspberry Pi 💡 Next up: Automating the setup and integrating OpenCV + multimedia features --- If you’re exploring Yocto for Raspberry Pi, this is a solid starting point to understand its modular design and build flexibility! 💻🐧 #YoctoProject #RaspberryPi #EmbeddedLinux #OpenSource #Scarthgap #BuildAutomation #Linux
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Linux Journey – Week 4 💻 The more I learn about Shell Scripting, the more I realize how powerful it is. With just a few lines of code, you can automate daily tasks, schedule jobs, or manage entire systems. What used to take minutes or hours can now run automatically in seconds. ⚙️ This part of Linux really shows how automation starts small — one script at a time. 🚀 #LinuxJourney #Week4 #ShellScripting #Automation #LearningLinux #CloudEngineer #TechGrowth
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I get this question all the time “Where do I start with Linux?” Here’s my honest answer. You don’t study Linux. You live in it. Forget memorizing 100 commands start working like a Linux user. Here’s how 👇 1. Replace your comfort zone. Stop clicking through Windows. Run your next few projects entirely on a Linux VM or WSL. The goal isn’t perfection it’s comfort. 2. Break things intentionally. Delete files. Kill processes. Lock yourself out of sudo. Then fix it. Every panic you feel is how you learn system recovery. 3. Build real habits. • Use grep, awk, sed, and find daily. • Manage permissions. • Write small bash scripts that automate annoying tasks. 4. Understand why, not just how. Don’t just run chmod 755 understand what each digit means. Don’t just restart a service learn what systemd is doing under the hood. 5. Turn repetition into fluency. Open your terminal every day, even for 15 minutes. Linux rewards consistency not memorization. Because here’s the truth: Once you stop using Linux like a stranger and start living in it like home DevOps stops being scary. Linux isn’t just an operating system it’s the language of automation, infrastructure, and control. Learn to speak it fluently. #DevOps #Linux #NimbusCompute #Mentorship #Automation #EngineeringMindset
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Ever wondered how Linux organizes its powerful file system? This visual guide breaks it down perfectly - each directory has its own purpose and logic, making Linux both elegant and efficient. Here’s a quick glance at a few essentials every developer or sysadmin should know: /bin → Essential command binaries /etc → System-wide configuration files /home → User directories /var → Continuously changing data /proc → Interface to kernel data structures It’s fascinating how these directories form the backbone of Linux — once you understand them, navigating and managing the OS becomes second nature. What’s your favorite Linux directory to explore - and why? Drop it in the comments 👇 https://lnkd.in/dyryT3N9 #Linux #OpenSource #SystemAdmin #DevOps #LinuxCommunity #SysAdminLife #Coding #Developers #TechLearning #SoftwareEngineering
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