sudo回声“某物" >> /etc/privilegedFile不起作用 [英] sudo echo "something" >> /etc/privilegedFile doesn't work

问题描述

这是一个非常简单的问题，至少看起来应该如此，关于Linux中的sudo权限.

很多时候，我只想将某些内容附加到/etc/hosts或类似文件中，但最终却无法执行，因为即使使用root，也不允许同时使用>和>>. >

是否有某种方法可以使此工作而不必su或sudo su进入根目录?

解决方案

使用tee --append或tee -a.

echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list

确保避免在引号内使用引号.

为避免将数据打印回控制台，请将输出重定向到/dev/null.

echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list > /dev/null

请记住(-a/--append)标志！ 只是tee的作用与>相同，并且会覆盖您的文件. tee -a的作用与>>相似，并将写在文件末尾.

This is a pretty simple question, at least it seems like it should be, about sudo permissions in Linux.

There are a lot of times when I just want to append something to /etc/hosts or a similar file but end up not being able to because both > and >> are not allowed, even with root.

Is there someway to make this work without having to su or sudo su into root?

解决方案

Use tee --append or tee -a.

echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list

Make sure to avoid quotes inside quotes.

To avoid printing data back to the console, redirect the output to /dev/null.

echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list > /dev/null

Remember about the (-a/--append) flag! Just tee works like > and will overwrite your file. tee -a works like >> and will write at the end of the file.

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