73 lines
1.5 KiB
Bash
73 lines
1.5 KiB
Bash
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#!/bin/bash
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# simple input and output
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# variable shadowing
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# nesting and recursion
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function simple_inputs() {
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echo "This is the first argument [$1]"
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echo "This is the second argument [$2]"
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echo "Calling function with $# aruments"
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}
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global_variable="lorem"
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function simple_outputs() {
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sum=$(($1+$2))
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echo "Sum is $sum"
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global_variable="dolor"
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# this is just the status code
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# does not work if we want to return
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# other than numerical
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return $sum
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}
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# missing brackets still works
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# as long as we have compound commands
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function simple_for_loop()
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# echo "Looping through numbers"
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for ((i=0;i<5;++i)) do
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echo -n " "$i;
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done
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function simple_comparison()
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if [[ "$1" -lt 5 ]]; then
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echo "$1 is smaller than 5"
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else
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echo "$1 is greater than 5"
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fi
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# command groups with subshells
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# with the limitation of new enviornments
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function simple_subshell()
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(
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echo "I'm a little tea pot"
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simple_comparison 10
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cd ..
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global_variable="ipsum"
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)
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function fibonnaci_recursion() {
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argument=$1
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if [[ "$argument" -eq 0 ]] || [[ "$argument" -eq 1 ]]; then
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echo $argument
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else
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first=$(fibonnaci_recursion $(($argument-1)))
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second=$(fibonnaci_recursion $(($argument-2)))
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echo $(( $first + $second ))
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fi
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}
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simple_inputs one two three
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simple_outputs 1 2
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simple_for_loop
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simple_comparison 6
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simple_comparison 4
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simple_subshell
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echo $global_variable
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#echo $(fibonnaci_recursion 7)
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