$ dpkg -l | fgrep dash
ii dash 0.5.7-2ubuntu2
POSIX-compliant shell
$ exec 9<no_such_file && echo TEST
dash: 1: cannot open no_such_file: No such file
$ exec 9<no_such_file || echo TEST
dash: 2: cannot open no_such_file: No such file
So, I cannot test this operation without using $?
in BASH this works as expected (even in sh mode)
--
Segmentation fault
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