bash - 스크립트에서 배열 사용하기

참조: https://www.cyberciti.biz/faq/finding-bash-shell-array-length-elements

How do I define bash array?

# varname=('elem1' 'elem2' ... )ArrayNum=(1 2 3 4)ArrayNumChar=({0..10} {a..z})

How do I reference any element in bash array?

# ${varname[idx_num]}echo ${ArrayNum[0]}echo ${ArrayNumChar[12]}

How do I find out bash shell array length?

# ${#varname[@]}echo ${#ArrayNum[@]}len=${#ArrayNumChar[@]}for (( i = 0 ; i < $len ; i++ ));do    echo ${ArrayNumChar[$i]};done;

results are here:

$ len=${#ArrayNumChar[@]}
$ for (( i = 0 ; i < $len ; i++ ));
> do
>    echo ${ArrayNumChar[$i]};
> done;
0
1
2
3
4
5
6
7
8
9
10
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
$