No, sorry. It does not work that way. If you ask screen to reserve 10 Million lines of scrollback per window, it will consume a lot of memory. This is normal behavious. Like if you load a 4 GB file into your text editor, it will also consume a lot of memory, and eventually make the system unusable.
I am running my screen sessions with 3000 lines of scrollback ever since. Appears sufficient for most cases. If you really need the possibility to scroll back infinitly, I'd recommend to check out the logfile options. cheers, JW- On Thu, Aug 14, 2014 at 1:53 AM, Ricardo F. Teixeira < ricardo.tei...@gmail.com> wrote: > Hi guys, > > Does anyone know how to set the size of the defscrollback buffer to > unlimited? > > Lookin' through the man page I saw no reference in setting an unlimited > value: > > defscrollback num > Same as the scrollback command except that the default setting for new > windows is changed. Initial setting is 100. > > Clearly by setting the -k value to nothing (screen -h) will throw the > help menu. A negative integer doesn't a solve the problem either, > 'cause screen will print an error message and will exit. > > screen.c > [626] if (nwin_options.histheight < 0) > [627] exit_with_usage(myname, "-h: %s: negative scrollback size?", *av); > > The only option left is to assign a higher value to this parameter. > However I learned, from the hard way, that screen -h 10000000 will > just hang a system with low resources - screen consumed more than 1GB > of memory! > > Lookin' on the source code for an answer, I noticed that screen > doesn't perform any boundaries check and will try to maintain > scrollback entirely in RAM. > > On a bad perspective this leads to (another) problem: anyone with > access to a setuid screen binary (most GNU/Linux distributions have > this by _default_) can literally hang a production system. > > So, does anyone have ideas on how to achieve this without freeze the > system? > > Thanks, > > R. > > _______________________________________________ > screen-users mailing list > screen-users@gnu.org > https://lists.gnu.org/mailman/listinfo/screen-users >
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