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Editor to share with you how to use the sudo command can not read environment variables, I believe that most people do not understand, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Use sudo-l to see the limitations of sudo:

$sudo-l

Matching Defaults entries for xxx on this host:

Env_reset, mail_badpass

Secure_path=/usr/local/sbin\: / usr/local/bin\: / usr/sbin\: / usr/bin\: / sbin\: / bin

User xxx may run the following commands on this host:

(ALL: ALL) NOPASSWD: ALL

Note that the option Defaults env_reset in the first line indicates that the environment variable will be reset by default, so that the variable you define will be invalidated in the sudo environment and will not be available.

In addition, some distributions have an option of Defaults env_keep= "" to keep some environment variables from being reset, and the variables that need to be retained are written in double quotes.

Resolve:

1. Add to .bashrc in the user's home directory:

Alias sudo='sudo env PATH=$PATH'

2 、 sudo visudo

# Defaults env_reset # comment out the original configuration

# Defaults env_keep= "…" # comment out the specified variable hold

Defaults! env_reset # modified to not reset the environment

The above is all the contents of the article "what to do if you can't read environment variables with the sudo command". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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