1 ./shopt.tests: shopt: illegal option: -z
2 shopt: usage: shopt [-pqsu] [-o long-option] optname [optname...]
11 shopt -s expand_aliases
18 shopt -s interactive_comments
24 shopt -u restricted_shell
25 shopt -u shift_verbose
34 shopt -s expand_aliases
36 shopt -s interactive_comments
54 shopt -u restricted_shell
55 shopt -u shift_verbose
93 set +o interactive-comments
117 interactive-comments off
141 set +o interactive-comments
170 set +o interactive-comments
187 interactive-comments off
191 ./shopt.tests: shopt: xyz1: unknown shell option name
192 ./shopt.tests: shopt: xyz1: unknown option name