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To get state of a flag in set -o..
How do we get state of a flag in set -o ... that has no direct alias
set [-+] , e.g.
set -o posix
or
set -o vi
?
not, e.g. set -o errexit , as it can be retrieved by
$ echo $-
then it'll be determined if letter e exists at the output string. Please help sincerely.
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