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从 tty1 终端编辑文件

tag-icon • tag-icon command-line tty sane
从 tty1 终端编辑文件

我想将设置RUN为yes，/etc/default/saned如中所述这个答案。

以下是该文件的片段：

# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=no

# Set to the user saned should run as
RUN_AS_USER=saned

如何在 tty1 终端内编辑 saned 文件？

答案1

打开 TTY1 ( ++ Ctl)并运行此命令：Alt F1 sed

sed -i '/^RUN=no$/s/no$/yes/' /etc/default/saned

  • /^RUN=no$/将匹配行RUN=no

  • 在这一行中我们no用yess/no$/yes/

  • -i选项是就地编辑文件。

测试 ：

    $ sed '/^RUN=no$/s/no$/yes/' /etc/default/saned

    # Defaults for the saned initscript, from sane-utils

    # Set to yes to start saned
    RUN=yes

    # Set to the user saned should run as
    RUN_AS_USER=saned

答案2

Ctrl使用++切换到 tty1Alt并F1登录。

使用以下方式编辑文件

sudo nano /etc/default/saned

Ctrl+O保存，Ctrl+X离开编辑器。

或者使用下面的简短命令...

好的，@heemayl 我们有一个sed版本，因此我们也需要一个 perl 版本=）

sudo perl -i -pe 's/(^RUN=)no/$1yes/' /etc/default/saned

例子

  • 起始情况

    % cat /etc/default/saned
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=no

# Set to the user saned should run as
RUN_AS_USER=saned
aboettger-VirtualBox% perl -pe 's/(^RUN=)no/$1yes/' /etc/default/saned 
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=no

# Set to the user saned should run as
RUN_AS_USER=saned

  • 试运行

    % sudo perl -pe 's/(^RUN=)no/$1yes/' /etc/default/saned 
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=yes

# Set to the user saned should run as
RUN_AS_USER=saned
aboettger-VirtualBox% perl -pe 's/(^RUN=)no/$1yes/' /etc/default/saned 
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=yes

# Set to the user saned should run as
RUN_AS_USER=saned

  • 替代者

    % sudo perl -i -pe 's/(^RUN=)no/$1yes/' /etc/default/saned

  • 最后的情况

    % cat /etc/default/saned                                  
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=yes

# Set to the user saned should run as
RUN_AS_USER=saned
aboettger-VirtualBox% perl -pe 's/(^RUN=)no/$1yes/' /etc/default/saned 
# Defaults for the saned initscript, from sane-utils

# Set to yes to start saned
RUN=yes

# Set to the user saned should run as
RUN_AS_USER=saned

答案3

实际上，您只需要使用其中一个基于文本的编辑器，幸运的是，您可以找到许多默认安装的编辑器。

最知名/使用的基于文本的编辑器是：

  • 纳米（最简单的），学会使用
  • Vi（传统 Linux 编辑器），学会使用
  • pico（实际上它只是 nano 的符号链接）

当然，您还可以安装大量其他基于文本的编辑器。

现在要做您想做的事情，您只需用您的一个基于文本的编辑器打开文件 /etc/default/saned，然后编辑 RUn 为是，保存并关闭。

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