38     cat >experr <<EOF  heredoc
41 EOF
48     cat >experr <<EOF  heredoc
50 EOF
57     create_test_program tp <<EOF  heredoc
66 EOF
68     cat >expout <<EOF  heredoc
72 EOF
75     cat >expout <<EOF  heredoc
79 EOF
87     cat >expout <<EOF  heredoc
90 EOF
92     cat >custom-shell <<EOF  heredoc
96 EOF
106     cat >expout <<EOF  heredoc
109 EOF
111     cat >custom-shell <<EOF  heredoc
115 EOF
131     cat >custom-shell <<EOF  heredoc
134 EOF
137     cat >tp <<EOF  heredoc
145 EOF