How to use a here document in a loop? [duplicate]

问题:

This question already has an answer here:

syntax error: unexpected end of file (1 answer)

Closed 5 years ago.

This works:

name="test.txt"

yap -q << % > $name
  [experiment_yap],
  exp1_min(brother,2).
%

This does not:

for i in 01 02 03 04 05
do
  name="test.txt"

  yap -q << % > $name
    [experiment_yap],
    exp1_min(brother,2).
  %
done

I receive line 19: syntax error: unexpected end of file

回答1:

It's not being in a loop that's significant here. bash doesn't really know or care about indentation -- to recognize the end of the heredoc the terminating string must be at the beginning of the line, which makes your loop look like:

for i in 01 02 03 04 05
do
  name="test.txt"

  yap -q << % > $name
    [experiment_yap],
    exp1_min(brother,2).
%
done