Linux and DevOps

🔰 Docker Introduction - Docker, Containers & DevOps - Hands On 🌟 4.6 - 193 votes 💰 Original Price: $19.99

📖 Beginner-Friendly Guide to Docker, Docker Desktop, DevOps + More with a Docker Captain, Kubestronaut and CNCF Ambassador

🔊 Taught By: James Spurin 📤 Download All Courses

Quick Linux tip 🐧 If you have trouble reading the directories in the $PATH variable, use the tr command to translate colon (":") characters to newline characters ("n") so they can be displayed in lines:

$ echo $PATH | tr ":" "\n"

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📂 Full description Study to pass the Red Hat Certified Engineer (RHCE) exam—the benchmark certification for Red Hat Enterprise Linux. This installment of the RHCE Cert Prep series covers database configuration and management with MariaDB. Instructor Grant McWilliams begins by reviewing database basics, walking through a MariaDB server install, and noting differences between MySQL and MariaDB. Then he demonstrates some SQL commands for creating databases and tables, and how to query the data held within them. Next, he explains how to set and recover the database root user's password and secure your database server installation. Finally, he shows how to create and restore logical MariaDB backups of databases and tables.

🔅 Linux System Engineer: Database Servers Using MariaDB 🌐 Author: Grant McWilliams 🔰 Level: Intermediate ⏰ Duration: 47m

🌀 Study to pass the Red Hat Certified Engineer exam in this course on database configuration and management with MariaDB.

📗 Topics: MariaDB, Linux 📤 Join Linux and DevOps for more courses

Quick Linux Tip 🐧 Many people either don’t know about this or rarely use it. Pressing Ctrl+U in the Linux terminal deletes everything from the cursor position to the beginning of the line. Similarly, Ctrl+K deletes everything from the cursor position to the end of the line. This is especially useful if you mistype a password. Instead of holding down the backspace key, simply press Ctrl+U to clear the input and retype the password.

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📂 Full description Learn how to use bash scripting to automate common tasks on Red Hat Enterprise Linux (RHEL)—one of the most popular Linux distributions. This course covers the foundations of creating and debugging bash scripts, including scripts that accept input via positional arguments, pipes, and file parsing. Plus, learn how to get data out of bash scripts and set up conditional and looping code blocks. Grant also solves some real-world problems, using bash to monitor user space and CPU usage. Note: This course also helps you study to pass the Red Hat Certified Engineer (RHCE) exam—the benchmark certification for Red Hat Enterprise Linux.

🔅 Linux System Engineer: Bash Shell Scripting for Automation 🌐 Author: Grant McWilliams 🔰 Level: Intermediate ⏰ Duration: 57m

🌀 Learn how to use bash scripting to automate common tasks on Linux.

📗 Topics: Bash, Linux, Shell Scripting 📤 Join Linux and DevOps for more courses

📚 Loops in bash scripting

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Linux tip of the day🐧 In Linux, the pipe(|) operator is very useful if you want to redirect the output of one command to serve as input to the next for further processing:

$ cat data.txt | grep "No such file"

However, this does not redirect the errors. So, if the file does not exist, the grep command above will not return a match. What if you want to redirect and process both errors and normal output🤔 This is where this "|&" redirection operator comes in handy. This operator sends both the standard output (stdout) and standard error (stderr) of the first command over a pipe to the standard input (stdin) of the second command. Take a look at this example:

$ cat data.txt |& grep "No such file"

Notice the difference, the grep command was able to get a match. The "|&" operator in bash is a shorthand for the "2>&1 |" redirection operator.

$ cmd-1 2>&1 | cmd-2

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