Only looking at GNU manual pages gives you a wildly incorrect impression of things. * https://news.ycombinator.com/item?id=15780296 https://news.ycombinator.co

Only looking at GNU manual pages gives you a wildly incorrect impression of things. * https://news.ycombinator.com/item?id=15780296 https://news.ycombinator.com/item?id=15780296 Try looking at manual pages that are not GNU. * http://nixdoc.net/man-pages/HP-UX/man1/sed.1.html#EXAMPLES http://nixdoc.net/man-pages/HP-UX/man1/sed.1.html#EXAMPLES * https://www.ibm.com/support/knowledgecenter/ssw_aix_71/com.ibm.aix.cmds5/sed.htm https://www.ibm.com/support/knowledgecenter/ssw_aix_71/com.i... * https://www.freebsd.org/cgi/man.cgi?query=sed#EXAMPLES https://www.freebsd.org/cgi/man.cgi?query=sed#EXAMPLES * http://man.openbsd.org/sed#EXAMPLES http://man.openbsd.org/sed#EXAMPLES