./shopt.tests: line 2: shopt: -z: invalid option shopt: usage: shopt [-pqsu] [-o long-option] optname [optname...] -- shopt -u cdable_vars shopt -s cdspell shopt -u checkhash shopt -u checkwinsize shopt -s cmdhist shopt -u compat31 shopt -u dotglob shopt -u execfail shopt -s expand_aliases shopt -u extdebug shopt -u extglob shopt -s extquote shopt -u failglob shopt -s force_fignore shopt -u gnu_errfmt shopt -u histappend shopt -u histreedit shopt -u histverify shopt -s hostcomplete shopt -u huponexit shopt -s interactive_comments shopt -u lithist shopt -u login_shell shopt -u mailwarn shopt -u no_empty_cmd_completion shopt -u nocaseglob shopt -u nocasematch shopt -u nullglob shopt -s progcomp shopt -s promptvars shopt -u restricted_shell shopt -u shift_verbose shopt -s sourcepath shopt -u xpg_echo -- shopt -u huponexit shopt -u checkwinsize shopt -s sourcepath -- shopt -s cdspell shopt -s cmdhist shopt -s expand_aliases shopt -s extquote shopt -s force_fignore shopt -s hostcomplete shopt -s interactive_comments shopt -s progcomp shopt -s promptvars shopt -s sourcepath -- shopt -u cdable_vars shopt -u checkhash shopt -u checkwinsize shopt -u compat31 shopt -u dotglob shopt -u execfail shopt -u extdebug shopt -u extglob shopt -u failglob shopt -u gnu_errfmt shopt -u histappend shopt -u histreedit shopt -u histverify shopt -u huponexit shopt -u lithist shopt -u login_shell shopt -u mailwarn shopt -u no_empty_cmd_completion shopt -u nocaseglob shopt -u nocasematch shopt -u nullglob shopt -u restricted_shell shopt -u shift_verbose shopt -u xpg_echo -- cdable_vars off checkhash off checkwinsize off compat31 off dotglob off execfail off extdebug off extglob off failglob off gnu_errfmt off histappend off histreedit off histverify off huponexit off lithist off login_shell off mailwarn off no_empty_cmd_completion off nocaseglob off nocasematch off nullglob off restricted_shell off shift_verbose off xpg_echo off -- set +o allexport set -o braceexpand set -o emacs set +o errexit set +o errtrace set +o functrace set -o hashall set -o histexpand set -o history set +o ignoreeof set -o interactive-comments set +o keyword set -o monitor set +o noclobber set +o noexec set +o noglob set +o nolog set +o notify set +o nounset set +o onecmd set +o physical set +o pipefail set +o posix set -o privileged set +o verbose set +o vi set +o xtrace -- allexport off braceexpand on emacs on errexit off errtrace off functrace off hashall on histexpand on history on ignoreeof off interactive-comments on keyword off monitor on noclobber off noexec off noglob off nolog off notify off nounset off onecmd off physical off pipefail off posix off privileged on verbose off vi off xtrace off -- set +o allexport set -o braceexpand set -o emacs set +o errexit set +o errtrace set +o functrace set -o hashall set -o histexpand set -o history set +o ignoreeof set -o interactive-comments set +o keyword set -o monitor set +o noclobber set +o noexec set +o noglob set +o nolog set +o notify set +o nounset set +o onecmd set +o physical set +o pipefail set +o posix set -o privileged set +o verbose set +o vi set +o xtrace -- set -o history set +o verbose -- set -o braceexpand set -o emacs set -o hashall set -o histexpand set -o history set -o interactive-comments set -o monitor set -o privileged -- set +o allexport set +o errexit set +o errtrace set +o functrace set +o ignoreeof set +o keyword set +o noclobber set +o noexec set +o noglob set +o nolog set +o notify set +o nounset set +o onecmd set +o physical set +o pipefail set +o posix set +o verbose set +o vi set +o xtrace -- allexport off errexit off errtrace off functrace off ignoreeof off keyword off noclobber off noexec off noglob off nolog off notify off nounset off onecmd off physical off pipefail off posix off verbose off vi off xtrace off -- ./shopt.tests: line 93: shopt: xyz1: invalid shell option name ./shopt.tests: line 94: shopt: xyz1: invalid option name