如何在 Ubuntu(14.04.2) 服务器版中增加回滚行数？

Question

通过使用shift+ ，我只能在终端上看到有限的行pageup。在 Ubuntu 桌面版本中，可以选择使回滚行不受限制。如何在 Ubuntu 服务器版本中执行此操作。请建议。

Answer 1

最好的选择是使用像screen或tmux这样的终端多路复用器，它们更容易配置。

另一种方法是配置framebuffer console，通过编辑/etc/default/grub和更改GRUB_CMDLINE_LINUX为 include fbcon=scrollback:<value>[k]，其中<value>是您要为缓冲区分配的大小（以千字节为单位）。从内核文档：

C. Boot options

         The framebuffer console has several, largely unknown, boot options
         that can change its behavior.

1. fbcon=font:<name>

        Select the initial font to use. The value 'name' can be any of the
        compiled-in fonts: VGA8x16, 7x14, 10x18, VGA8x8, MINI4x6, RomanLarge,
        SUN8x16, SUN12x22, ProFont6x11, Acorn8x8, PEARL8x8.

    Note, not all drivers can handle font with widths not divisible by 8,
        such as vga16fb.

2. fbcon=scrollback:<value>[k]

        The scrollback buffer is memory that is used to preserve display
        contents that has already scrolled past your view.  This is accessed
        by using the Shift-PageUp key combination.  The value 'value' is any
        integer. It defaults to 32KB.  The 'k' suffix is optional, and will
        multiply the 'value' by 1024.

如果 32KB 不够，请尝试256k. 或者其他一些价值。试错，我猜。