Revisions to Count number of elements in bash array, where the name of the array is dynamic (i.e. stored in a variable)

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occurred Nov 12, 2015 at 6:39

deleted 15 characters in body

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edited Nov 11, 2015 at 22:50

Thanks!

corrected the copy method

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edited Nov 11, 2015 at 4:31

EXPR=$NAME[@]
arrCopy=( "${!$EXPREXPR}" )
count=${#arrCopy}

EXPR=$NAME[@]
arrCopy=( "${!$EXPR}" )
count=${#arrCopy}

EXPR=$NAME[@]
arrCopy=( "${!EXPR}" )
count=${#arrCopy}

added 3 characters in body

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edited Nov 10, 2015 at 23:21

Determine the length of an array:
myArr=(A B C); echo ${#myArr#myArr[@]}.
Indirectly reference a variable by name:
NAME=myVar; echo ${!NAME}
(this also applies to array elements):
NAME=myArr[1]; echo ${!NAME}

Determine the length of an array:
myArr=(A B C); echo ${#myArr}.
Indirectly reference a variable by name:
NAME=myVar; echo ${!NAME}
(this also applies to array elements):
NAME=myArr[1]; echo ${!NAME}

Determine the length of an array:
myArr=(A B C); echo ${#myArr[@]}.
Indirectly reference a variable by name:
NAME=myVar; echo ${!NAME}
(this also applies to array elements):
NAME=myArr[1]; echo ${!NAME}

added 134 characters in body

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edited Nov 10, 2015 at 23:00

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asked Nov 10, 2015 at 22:53

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