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echo $'a\tb' echo $'a\nb' $'c\nd''ef' echo $'a\'b' $'c\"d' $'e\\f' echo $'a\63b' $'c\063b' $'e\0633f' echo $'a\80b' $'c\608b' echo $'a\x33b' $'c\x330b' echo $'x\x9y'