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[bash/en] Update bash.html.markdown (#4202)

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Additional info on arguments and return values for functions
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MarkGrimwood 2021-08-22 19:15:03 +01:00 committed by GitHub
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@ -17,6 +17,7 @@ contributors:
- ["John Detter", "https://github.com/jdetter"] - ["John Detter", "https://github.com/jdetter"]
- ["Harry Mumford-Turner", "https://github.com/harrymt"] - ["Harry Mumford-Turner", "https://github.com/harrymt"]
- ["Martin Nicholson", "https://github.com/mn113"] - ["Martin Nicholson", "https://github.com/mn113"]
- ["Mark Grimwood", "https://github.com/MarkGrimwood"]
filename: LearnBash.sh filename: LearnBash.sh
translators: translators:
- ["Dimitri Kokkonis", "https://github.com/kokkonisd"] - ["Dimitri Kokkonis", "https://github.com/kokkonisd"]
@ -402,13 +403,17 @@ function foo ()
echo "Arguments work just like script arguments: $@" echo "Arguments work just like script arguments: $@"
echo "And: $1 $2..." echo "And: $1 $2..."
echo "This is a function" echo "This is a function"
return 0 returnValue=0 # Variable values can be returned
return $returnValue
} }
# Call the function `foo` with two arguments, arg1 and arg2: # Call the function `foo` with two arguments, arg1 and arg2:
foo arg1 arg2 foo arg1 arg2
# => Arguments work just like script arguments: arg1 arg2 # => Arguments work just like script arguments: arg1 arg2
# => And: arg1 arg2... # => And: arg1 arg2...
# => This is a function # => This is a function
# Return values can be obtained with $?
resultValue=$?
# More than 9 arguments are also possible by using braces, e.g. ${10}, ${11}, ...
# or simply # or simply
bar () bar ()