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Old 04-01-2010, 08:58 AM   #1
Registered: Nov 2009
Posts: 66

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Terminals, pageup/down of less,man

Only getting half pageup/down of text display in terminals.

Using a command-line terminal in 2 ways:

not running "startx" -screen is fullsize
GUI terminal window -screen is default or maximised

In either case if I run "ps aux" and then use shift-up/down to see the output, I only get a half-screen (or half page) change. That is, if the list in the screen has lines 1-50, on doing a shift-down the top line is 25 and not 51.

Similarly with "less" and "man". This is annoying with "ps aux" as there are so many similar processes and with the others it means checking the last line for sentence flow.

I want a definite full page up/down if I use shift-up/down or the keyboard pgup/dn keys.

Now, "man man" talks about the output being related to "less" and "man less" about using a ".lesskey" file and having options "-z, d" which change that paging behaviour. I can invoke the less options whilst it's running to give me fullpages but not trying a ".lesskey" options file in my directory.

I can't see any other ways of changing the "man" or straight terminal behaviour so any hints appreciated.
Old 04-01-2010, 12:06 PM   #2
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man uses less, and less uses vi key bindings. You can get a full page up or page down with f for forward and b for backward.
Old 04-01-2010, 01:55 PM   #3
David the H.
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I've also had the same problem for the longest time with the display history scrolling (shift+pageup/down only moves half of a screen), but I've never found a clear answer for it. It's quite annoying. It may have something to do with the readline key bindings or something.

I've never had a problem with less or other pagers though. However, check the man page for lesskey. Apparently it can be called as a separate command. It looks like you just have to create the .lesskey file in your home directory, or set the LESSKEY environmental variable in your shell startup scripts, to change the bindings.
Old 04-02-2010, 07:53 AM   #4
Registered: Nov 2009
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ok, thanks penguinator and David.

David, my original post line was perhaps unclear. "...but not trying a ".lesskey" options file in my directory."

that meant the "lesskey" file I did set up according to the "mans" didn't seem to work though I may have misunderstood the pages.
and anyway,using spacebar was ok for forward only-

However, bit of an "aaarrrgghh" moment

On rebooting I've found that using the 'f,b' keys now gives a page certainly with "man" and "less" which believe me didn't happen before, which leaves the shift-up/down.

regards both


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