Conditionals run code only when a test is true, and loops repeat code multiple times. Together they give scripts logic and the ability to process many items automatically.

A function is a named, reusable block of code that performs a task. Functions make scripts modular and easier to read, test, and maintain as they grow.

Argument parsing reads the values passed to a script when it runs, and input validation checks that those values are correct and safe before use. Both make scripts reliable and robust.

cron is a Linux scheduling service that runs commands or scripts automatically at set times or intervals. It is the standard tool for automating recurring administrative tasks.

cron schedules tasks to run repeatedly on a recurring schedule, and at schedules a task to run once at a specific future time. The course covers both.

sed and awk are command-line text-processing tools. sed transforms text streams, and awk extracts and processes structured data. Both are widely used in scripts for handling logs and text files.

Error handling is writing scripts that detect and respond to problems gracefully, for example by checking command results and reporting failures, rather than continuing blindly. It makes automation safe to run unattended.

No formal experience is required, though familiarity with basic programming ideas such as variables and loops makes the concepts easier. The course introduces each concept from the ground up.

You should be comfortable at the Linux command line before starting, which Introduction to Linux covers. That foundation makes scripting easier to follow.

Yes. The course is demo-driven, so you write and run scripts in your own Linux environment alongside each demonstration.

Yes. It is the third course in the Linux System Administration Specialization. It can also be taken on its own if you have the command-line foundation.

Yes. You earn a shareable Course Certificate on completion, which you can add to a resume and LinkedIn profile.

To access the course materials, assignments and to earn a Certificate, you will need to purchase the Certificate experience when you enroll in a course. You can try a Free Trial instead, or apply for Financial Aid. The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.

When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile.