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31 lines
1.0 KiB
31 lines
1.0 KiB
2 years ago
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#!/bin/sh
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# To make this script executable, use the command: chmod +x 02_variables.sh
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# To run the script, use the command: ./02_variables.sh
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echo "This script is a spell that will teach you the basics of variables and parameter expansion in Bash."
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echo "To study the code of the examples, please use the command: cat 02_variables_parameter_expansion.sh"
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# Declaring a variable
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ingredient="Dragon's blood"
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echo "Gathering ingredients for the potion, $ingredient found."
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# Accessing the value of a variable
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echo "The ingredient used is: $ingredient"
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# Re-assigning a variable
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ingredient="Unicorn hair"
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echo "Gathering ingredients for the potion, $ingredient found."
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# Special variable: $#
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echo "Number of ingredients passed to the script: $#"
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# Special variable: $@
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echo "All ingredients passed to the script: $@"
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# Special variable: $?
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echo "Effect of the last ingredient added: $?"
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# Parameter expansion
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echo "The first ingredient passed to the script is: ${1}" #todo: split this into another script, maybe between 01 and 02?
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echo "Spell cast successfully."
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