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This command
echo "hello world" | awk '{split($0, array, " ")} END{print length(array) }' does not work for me and gives this error message
awk: line 1: illegal reference to array array
Why?
422
length is a property of arrays in JavaScript that returns or sets the number of elements in a given array. The length property of an array can be returned like so. let desserts = ["Cake", "Pie", "Brownies"]; console. log(desserts.
awk length(string) Function: The length() function calculates the length of a string. Explanation: Length of the string also includes spaces. 3. awk substr(s, p, n) Function: The length() function is used to extract substring function from a string.
var-name = new type [size]; Here, type specifies the type of data being allocated, size determines the number of elements in the array, and var-name is the name of the array variable that is linked to the array. To use new to allocate an array, you must specify the type and number of elements to allocate.
When you split an array, the number of elements is returned, so you can say:
echo "hello world" | awk '{n=split($0, array, " ")} END{print n }' # ------------------------^^^--------------------------------^^ Output is:
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