Shell Scripting
Develop the skills to write reliable Bash scripts for repeatable administration tasks through a learning path centred on Shell Scripting. Explore concepts, guided practice and an applied project.
Build practical Shell Scripting skills.
Skills and knowledge developed in this course.
- Script execution and shell behaviour
- Variables, quoting and expansion
- Conditions, loops and collections
- Functions and command-line interfaces
- Text and stream processing
- Failures, cleanup and safe file operations
- Script verification and scheduled automation
- Reusable automation project
About this course
Turn command-line work into maintainable scripts. Learn quoting and expansion, control flow, functions, text processing, argument parsing, exit-status handling and safe scheduling through progressively larger Bash exercises.
Who this is for
Linux users and administrators who want to automate recurring work with Bash.
Before you start
Ability to navigate files, use pipes and run ordinary Linux commands. Programming experience is helpful but not required.
Build a tested backup-and-health-check command-line utility
Deliver a Bash utility with named options, validated paths, structured status output, meaningful exit codes, cleanup handling and tests using disposable sample data.
Course content
Course-specific syllabus and practical exercises. Lab release, access arrangements and final delivery scope are confirmed before enrolment.
01Script execution and shell behaviour
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- Use a shebang and explain execution permissions, PATH and exit status.
- Distinguish sourcing a file from running a separate shell process.
Practical exercisewrite and run a script that reports the current environment.
02Variables, quoting and expansion
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- Compare single quotes, double quotes and unquoted expansion.
- Use parameter expansion, command substitution and arithmetic without unintended word splitting.
Practical exerciseprocess filenames containing spaces without corrupting the arguments.
03Conditions, loops and collections
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- Use test expressions, if, case, for and while.
- Work with positional arguments, indexed arrays and read-based input loops.
Practical exerciseclassify a set of files and produce a deterministic summary.
04Functions and command-line interfaces
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- Separate work into functions with explicit inputs and return codes.
- Parse short options with getopts and validate required arguments.
Practical exerciseimplement help output and an argument-checked command-line interface.
05Text and stream processing
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- Combine grep, sed and awk for defined text formats.
- Handle standard input, file descriptors and output redirection deliberately.
Practical exerciseturn sample service logs into a timestamped report.
06Failures, cleanup and safe file operations
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- Test exit statuses and understand limitations of automatic error-exit behaviour.
- Use traps, temporary files and atomic replacement patterns.
Practical exercisesimulate a failed operation and verify that temporary resources are cleaned up.
07Script verification and scheduled automation
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- Use bash -n, tracing and ShellCheck-style static checks.
- Run scripts with controlled environments through cron or systemd timers.
Practical exercisetest empty input, invalid paths and repeated execution before scheduling the utility.
08Reusable automation project
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- Structure configuration, logs and executable code for maintainability.
- Protect secrets and document dependencies, expected outputs and failure modes.
Practical exercisedemonstrate the complete backup-and-health-check utility against sample fixtures.
Technical references
These primary vendor, project or standards sources inform this independent IT Purview outline. Reference pages checked 25 October 2026; current provider documentation and exam objectives take precedence when versions change.
From understanding to application.
Progress by learning milestone. The schedule is agreed around your starting level and learning goals.
- 01Learning milestone 1 In progress
Understand shell execution
Modules 1–2: execution and expansion
Write a script that handles arguments and filenames correctly. - 02Learning milestone 2 In progress
Implement useful logic
Modules 3–5: control flow, interfaces and text
Produce a configurable report from sample logs. - 03Learning milestone 3 In progress
Handle failures deliberately
Modules 6–7: cleanup, validation and scheduling
Pass failure-case tests in a controlled environment. - 04Learning milestone 4 In progress
Deliver a reusable tool
Module 8 and the automation project
Demonstrate the utility, its tests and operational documentation.
Career outlook after this learning path
Typical roles this roadmap can support, with broad salary ranges by relevant work experience.
| Role | 0–3 years | 3–7 years | 7–12+ years |
|---|---|---|---|
| Linux / Unix Administrator | ₹5–11 LPA | ₹12–24 LPA | ₹25–45 LPA |
Ranges are indicative India-market compensation estimates in ₹ lakh per annum, not a salary promise. They reflect broad market guides and vary by location, employer, skills and role scope; the experience bands refer to relevant work experience, not time since training. Completing this course does not guarantee employment, a role, compensation or career progression. View market reference ↗