Bash script Set variable in loop

Question

I want to run a for loop for all strings in a variable (one by one). When I echo my variable it is like this

A=(curl -s 'localhost:9200/something)
echo "$A"

emits:

sss
ddd
fff
ggg
hhh

My for loop is like this:

for i in "${A[@]}"; do
  echo "$i"
  echo test
 done

But loop just run one time and print all data, instead of putting test after each item:

sss
ddd
fff
ggg
hhh
test

Try simple *echo $A | while read line; do echo $line; done*. — 0andriy, Jul 28 '18 at 06:31
@0andriy thanks. it work like this: echo "$A" | while read line; do echo "$line"; done — hamid bayat, Jul 28 '18 at 06:47
Better store them in an **actual** array: `a=("sss" "ddd"); for i in "${a[@]}"; do echo "$i"; done` — PesaThe, Jul 28 '18 at 08:12
@PesaThe I am running a command and the sending the output to A variable. A=(curl -s 'localhost:9200/something) . the output of this command print strings line by line. how I can send the output to array? — hamid bayat, Jul 28 '18 at 08:22
@hamidbayat In that case, use the `while read` solution. I wouldn't recommend @Cyrus' solution unless you turn off globbing with `set -f`. — PesaThe, Jul 28 '18 at 08:52
@hamidbayat, how you're populating that variable is critical -- it's not actually an array when you assign it that way. The question is incomplete without that included inside it. — Charles Duffy, Jul 28 '18 at 15:48

score 1 · Accepted Answer · answered Jul 28 '18 at 11:15

1

As suggested by @PresaThe,

while read line ; do  echo "$line" ; echo testsss; done <  <(curl -s 'localhost:9200/something)

answered Jul 28 '18 at 11:15

CS Pei

In [How to Answer](https://stackoverflow.com/help/how-to-answer), note the section "Answer Well-Asked Questions", and within that the bullet point regarding questions which "*have already been asked and answered many times before*". – Charles Duffy Jul 28 '18 at 15:46

1 Answers1