Shell Scripting Basics Questions

Practical ability to write and maintain simple shell scripts using Bash and other Unix shells to automate routine system and DevOps tasks. Core skills include variable assignment and substitution, control flow with conditionals such as if and else, looping constructs such as for and while, defining and invoking functions, basic error handling and exit code checks, and logging for observability. Candidates should also be comfortable with basic file and directory operations, invoking and composing commands, and text processing using tools such as grep, sed, and awk. Emphasis is placed on scripting best practices including input validation, defensive programming, clear code organization and readability, making scripts idempotent where appropriate, and handling common edge cases when automating system administration or deployment workflows.