Arrays in unix shell?
The following code creates and prints an array of strings in shell:
#!/bin/basharray=("A" "B" "ElementC" "ElementE")for element in "${array[@]}"do echo "$element"doneechoecho "Number of elements: ${#array[@]}"echoecho "${array[@]}"Result:
ABElementCElementENumber of elements: 4A B ElementC ElementE
Bourne shell doesn't support arrays. However, there are two ways to handle the issue.
Use positional shell parameters $1, $2, etc.:
$ set one two three$ echo $*one two three$ echo $#3$ echo $2twoUse variable evaluations:
$ n=1 ; eval a$n="one" $ n=2 ; eval a$n="two" $ n=3 ; eval a$n="three"$ n=2$ eval echo \$a$ntwo