如何将文件的一部分移动到末尾

发布于 2024-08-02 05:51:31 字数 980 浏览 7 评论 0原文

rpm 会自动将新安装的内核作为第一个选项。但是，我想将其作为最后一个移动到文件末尾。

Grub 配置文件如下所示：

default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.6-217.2.7.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-217.2.7.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-217.2.7.fc11.x86_64.img
title Fedora (2.6.29.6-217.2.3.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-217.2.3.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-217.2.3.fc11.x86_64.img
title Fedora (2.6.29.6-213.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-213.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-213.fc11.x86_64.img

我的目标是将第一个选项 (217.2.3) 移至末尾。现在我弄清楚如何删除它：

sed -e '/(2.6.29.6-217.2.7.fc11.x86_64)/,+3d' /boot/grub/menu.lst

p 命令仅打印当前行（不像在 vim 中，它意味着粘贴）。

您有什么想法如何自动将文件的这一部分移动到末尾吗？

原文

rpm automatically place a new installed kernel as the first option. However, I want to move it as the last one - to end of the file.

Grub configuration file looks like this:

default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.6-217.2.7.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-217.2.7.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-217.2.7.fc11.x86_64.img
title Fedora (2.6.29.6-217.2.3.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-217.2.3.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-217.2.3.fc11.x86_64.img
title Fedora (2.6.29.6-213.fc11.x86_64)
    root (hd0,0)
    kernel /vmlinuz-2.6.29.6-213.fc11.x86_64 ro root=/dev/mapper/main-root rhgb quiet
    initrd /initrd-2.6.29.6-213.fc11.x86_64.img

My goal is to move first option (217.2.3) to end. Now I figure out how to delete it:

sed -e '/(2.6.29.6-217.2.7.fc11.x86_64)/,+3d' /boot/grub/menu.lst

p command only prints current line (not as in vim, where it means paste).

Do you have any ideas how to automatically move this part of file to its end?

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゛时过境迁 2024-08-09 05:51:31

我必须自己回答。 :-)

sed '/\(2.6.18-157.el5\)/,+4 { H; d; }; $ { p; x; }' /boot/grub/menu.lst

如果您不熟悉 sed （我也不熟悉），还有更详细的版本

sed '
 /\(2.6.18-157.el5\)/,+3 { #Find line which contains version of our kernel in parentheses and took also 3 following lines
  H # Append this line into buffer
  d # Delete line
 }

 $ { # On the last line
 p # Print current line
 x # Change current line with buffer and vice versa
 # Afterwards sed print current line => in our case deleted line
 }' /boot/grub/menu.lst

I have to answer myself. :-)

sed '/\(2.6.18-157.el5\)/,+4 { H; d; }; $ { p; x; }' /boot/grub/menu.lst

If you are not fluent with sed (me neither), there is more verbose version

sed '
 /\(2.6.18-157.el5\)/,+3 { #Find line which contains version of our kernel in parentheses and took also 3 following lines
  H # Append this line into buffer
  d # Delete line
 }

 $ { # On the last line
 p # Print current line
 x # Change current line with buffer and vice versa
 # Afterwards sed print current line => in our case deleted line
 }' /boot/grub/menu.lst

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