Auto yes to raid5 array script

Question

I am working on a script to install a array raid5. I am having trouble with inserting auto=yes when the script ask: if I want to continue creating array. I tried --auto=yes (http://www.linuxmanpages.com/man8/mdadm.8.php) but very unsure where to place it.

#!/bin/bash
mdadm mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdc1 /dev/sdd1 /dev/sde1 --spare-devices=1 /dev/sdf1

if [ $? -eq 0 ]; then
    echo OK
else
    echo FAIL
fi

Answer 1

1) you can use HEREDOC to resolve such problems.

for example for passwd command:

#!/bin/bash
passwd user <<EOF
mypassword
mypassword
EOF

You can also run your script and put heredoc :

./script <<EOF
>yes
>yes
>no
>EOF

UPDATE:

This is finally what you want

if you have one question:

./script <<EOF
>yes
>EOF

Also you can:

#!/bin/bash
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdc1 /dev/sdd1 /dev/sde1 --spare-devices=1 /dev/sdf1 <<EOF
yes
EOF

2) There is also another solution:

yes | command-that-asks-for-input

or, if a capital 'Y' is required:

yes Y | command-that-asks-for-input