Question

I would like to break and error out on a looped block of code, when of any of the commands in the loop return 1. I would like to do this without a sub-shell.

while read file; do

   command_one_that_might_error_out;
   command_two_that_might_error_out;
   command_three_that_might_error_out;

done < <(ls -1 .) || echo "something bad when of the commands ran happened";

Can any one please provide insight?

Answer 1

I haven’t tested it, but this should work:

err_val=0
while read file; do

    command_one_that_might_error_out || { err_val=$?; break; }
    command_two_that_might_error_out || { err_val=$?; break; }
    command_three_that_might_error_out || { err_val=$?; break; }

done < <(ls -1 .)

if [ $err_val -ne 0 ]; then
    echo "something bad happened"
fi