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  • You said it 's from the Bash Manual. Where exactly is this to read? I can't find it, even if I try man bash | grep -A2 -B2 "regular expression". Commented Jul 27, 2017 at 13:03
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    @JohnGoofy, the man page is a stripped down version of the manual. You may want to look at the info page instead. Tim has also added a link to the online manual in his answer. Commented Jul 27, 2017 at 13:54