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29 Σεπ 2010 · However, it breaks with the following error: script.sh: line 1341: syntax error near unexpected token `;;' script.sh: line 1341: ` ;;' Line 1341 is in the middle of a case statement.
5 Ιουλ 2021 · elif [[ "${1}" == "triangle" ]]; then "You specified 'triangle'." else echo "Unknown shape '${1}'." exit 1 fi. This demonstrates, albeit with no functionality, a simple task that can repeat a known shape back to a user, or if the shape is unknown, show an error message.
7 Δεκ 2023 · Bash case statements make scripts easier to read and maintain compared to long if-then-else statements. The case statement in Bash matches an expression with patterns in clauses and executes statements accordingly.
For small things that you want to happen if a shell command works, you can use the && construct: rm -rf somedir && trace_output "Removed the directory" Similarly for small things that you want to happen when a shell command fails, you can use ||: rm -rf somedir || exit_on_error "Failed to remove the directory" Or both
29 Μαρ 2016 · The case statement allows you to easily check pattern (conditions) and then process a command-line if that condition evaluates to true. In other words the $variable-name is compared against the patterns until a match is found.
24 Οκτ 2024 · The case statement tests input values and executes a corresponding command based on a matched pattern. It's ideal for various shell scripting tasks, such as creating menus, handling errors, or automating tasks like starting, stopping, or restarting services .
18 Μαρ 2024 · This tutorial will cover the basics of the Bash case statement and show you how to use it in your shell scripts. case Statement Syntax # The syntax of the Bash case statement consists of the “ case ” keyword followed by the value to be matched, the “ in ” keyword, and one or more patterns with corresponding code blocks enclosed in ...
