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48 lines
1.4 KiB
48 lines
1.4 KiB
2 years ago
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#!/bin/sh
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# To make this script executable, use the command: chmod +x 05_functions.sh
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# To run the script, use the command: ./05_functions.sh
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echo "This spell will teach you the basics of functions in POSIX-compliant Bash"
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echo "To study the code of the examples, please use the command: cat 05_functions.sh"
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# Defining a function
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create_potion() {
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echo "Creating potion with $1 and $2"
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}
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# Calling a function
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create_potion "Dragon's blood" "Unicorn hair"
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# Defining a function with return value
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calculate_price() {
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echo $((10 + 20))
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}
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# Calling a function with return value
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price=$(calculate_price)
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echo "Price of the potion is $price golds"
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echo "Functions can also be loaded in your .bashrc file to make them available in all terminals."
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echo "For example, you can add the following line in your .bashrc file to load the 'hello' function: 'hello() { echo \"Hello, \$1\" }'"
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echo "Creating a function that changes the working directory"
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go_to_spell_folder() {
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cd ~/spells
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pwd
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}
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# Return statement
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echo "The 'return' statement cause the function to return immediately. The return value can be captured in a variable."
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my_function() {
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echo "Inside the function"
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return 5
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echo "This line will not be executed"
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}
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echo "Before calling the function"
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result=$(my_function)
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echo "The function returned $result"
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echo "After calling the function"
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echo "Spell cast successfully"
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