从 tty1 终端编辑文件

Question

我想设置RUN到yes中/etc/default/saned，在提到这个答案。

这是文件的片段：

# 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

如何从 tty1 终端内编辑 saned 文件？

Answer 1

打开TTY1（Ctl+ Alt+ F1 ）和运行这个sed命令：

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

• /^RUN=no$/ 将匹配该行 RUN=no

• 该行我们正在取代no与yes被s/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