105.2 Customize or write simple scripts

• Weight: 4
• Description: Candidates should be able to customize existing scripts, or write simple new BASH scripts.

Key Knowledge Areas

• Use standard sh syntax (loops, tests).
• Use command substitution.
• Test return values for success or failure or other information provided by a command.
• Perform conditional mailing to the superuser.
• Correctly select the script interpreter through the shebang (#!) line.
• Manage the location, ownership, execution and suid-rights of scripts.

Terms and Utilities

• for
• while
• test
• if
• read
• seq