On 18/02/2019 13:27, Udo Grabowski (IMK) wrote:
On 18/02/2019 13:00, Peter Tribble wrote:On Mon, Feb 18, 2019 at 11:36 AM Udo Grabowski (IMK) <udo.grabow...@kit.edu <mailto:udo.grabow...@kit.edu>> wrote: Hi, I was wondering for a while now why I could not grep man pages anymore, like 'man ftp|grep netrc', which was working a couple of OI versions before. Try something like man ftp | col -x -b | grep netrc to strip the formatting.Thanks, that really helps !Today I really got curious and found these weird constructions in the man page output 'man ftp|od -tc' 0121460 \b ~ / \b / . \b . n \b n e \b e t \b 0121500 t r \b r c \b c \n \n A \b A T \b T T That means: most of the characters are backspaced and written again ! Checked a couple of man pages, most of them have these useless sequences in them, so grepping man pages is mostly impossible now.
ok, not *that* useless, as overprinting via backspace seems to be not only a common technique for printers to get bold characters, but also gets interpreted by less and more in that way. -- Dr.Udo Grabowski Inst.f.Meteorology & Climate Research IMK-ASF-SAT http://www.imk-asf.kit.edu/english/sat.php KIT - Karlsruhe Institute of Technology http://www.kit.edu Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
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