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CodeSignal

Bash Script Error Handling

via CodeSignal

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Overview

Learn effective error management in shell scripts. Cover exit statuses, error message redirection, file/directory checks, `trap` command for cleanup, and try-catch mechanisms. Master writing robust scripts that handle errors gracefully and maintain system stability. By course end, you'll create reliable shell scripts for various scenarios.

Syllabus

  • Unit 1: Understanding Exit Statuses
    • Observe Exit Statuses in Action
    • Update Exit Status Script
    • Fix the Error Statuses
    • Admin Login Error Handling
    • Mastering Shell Script Exit Statuses
  • Unit 2: Standard Error and Logging in Shell Scripts
    • Observing Error Redirection
    • Modifying Error Redirection
    • Fix Redirection Bugs
    • File Size Error Handling
    • Custom Function Error Handling
  • Unit 3: File and Directory Error Handling
    • Check File and Directory Existence
    • Modifying File and Directory Existence
    • Check and Create File Paths
    • Handling Sensitive Data
    • Handling File Copy Errors
  • Unit 4: Trap Command and Cleaning Up
    • Observing Trap Commands
    • Handling Interrupt Trap Signals
    • Fix the Cleanup Bug
    • Auto-save Error Handling
    • System Updates Cleanup

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