You are not logged in. Your edit will be placed in a queue until it is peer reviewed.
We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.
Required fields*
How to Edit
- Correct minor typos or mistakes
- Clarify meaning without changing it
- Add related resources or links
- Always respect the author’s intent
- Don’t use edits to reply to the author
How to Format
-
create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
- for linebreak add 2 spaces at end
- _italic_ or **bold**
- indent code by 4 spaces
- backtick escapes
`like _so_` - quote by placing > at start of line
- to make links (use https whenever possible)
<https://example.com>[example](https://example.com)<a href="https://example.com">example</a>
How to Tag
A tag is a keyword or label that categorizes your question with other, similar questions. Choose one or more (up to 5) tags that will help answerers to find and interpret your question.
- complete the sentence: my question is about...
- use tags that describe things or concepts that are essential, not incidental to your question
- favor using existing popular tags
- read the descriptions that appear below the tag
If your question is primarily about a topic for which you can't find a tag:
- combine multiple words into single-words with hyphens (e.g. shell-script), up to a maximum of 35 characters
- creating new tags is a privilege; if you can't yet create a tag you need, then post this question without it, then ask the community to create it for you
lang-bash
env_delete, but I agree the crux of the problem is that the default behavior of env_reset...causes commands to be executed with a new, minimal environment.We have a linux system with PAM, so according to the man page,The new environment contains the ... SHELL ... (variable). As you can see from my/etc/sudoersfile above, we do not allowSHELLin theenv_keep. SoSHELLshould not be preserved; we should have the root user'sSHELL.zabbix ALL=(root) NOPASSWD: /bin/env SHELL=/bin/sh /tmp/doit *to my/etc/sudoers/zabbixfile, and it has a proper shell. Thanks, I now have a workaround. The question is, why did I need to include it? It seems dangerous (and broken) to pass the caller's SHELL but I can find no place where sudo is set to modify it. I have runfind /etc/sudoers /etc/sysconfig -type f -exec grep env_ {} \;and I find no red flags;/etc/sudoerscontains the onlyenv_string. So I don't think there is a sudoers flag interfering...sudo bashshould start a bash shell as root and it MUST have the SHELL variable set to the value from /etc/password. You report that SHELL is being set to (or preserved as)/sbin/nologin. That is a security issue, the shell started by root must not be controlled by an environment variable set by an user. That is something you must investigate.zabbix ALL=(root) NOPASSWD: /bin/env SHELL=/bin/sh /tmp/doit *works for you, I would not waste more time on this. This is a safe way to set the environment variables.