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Title: bash shell script accessing array variables Post by: Mark David on March 16, 2007, 01:09:04 PM bash shell script accessing array variables
The bash shell allows a number of methods for accessing elements of variable arrays. This recipe demonstrates some of these techniques. Given the array defined by the following code: Code: names=( Jennifer Tonya Anna Sadie Molly Millie) The individual elements in the array can be accessed by their numeric index (remember that they start counting a zero) with: Code: ${names[0]} -> Jennifer All of the elements can be accessed at the same time (which is useful in a for loop) with the following: Code: ${names[@]} The number of elements in the array can be obtained with: Code: ${#names[@]} -> 6A range of elements can easily be specified with the following syntax: Code: ${names[@]:2:3} -> Anna Sadie Molly The first example starts at element 2 (the third element) and returns the next three elements (:2:3). The second example starts at record 3 and returns all of the remaining records (:3). |