Bash Shell-使用内置的set和shopt命令设置bash选项
# set -o #查看当前设置情况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 off
verbose off
vi off #关闭中
xtrace off
# set -o vi #把vi选项打开
# set -o #查看当前设置情况
allexport off
braceexpand on
emacs off
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 off
verbose off
vi on #已经打开
xtrace off
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