On Sat, May 4, 2024 at 4:49 PM Carlos Rodriguez-Fernandez <carlosrodrifernandez@xxxxxxxxx> wrote:
The suggestion for one of the comments of using `/run/fail2ban(/.*)?`
instead of `/run/fail2ban.*` doesn't work?
I try to be very careful with making changes in SELinux and I don't know what the difference is between those two statements.
ChatGPT had the following to say:
In SELinux, these two statements represent regular expressions used in file context definitions. Let's break down each one:
1. `/run/fail2ban(/.*)?`:
- This regular _expression_ matches paths that start with `/run/fail2ban/` followed by zero or more characters (`.*`) and optionally followed by a forward slash and zero or more characters (`(/.*)?`). Essentially, it matches paths like `/run/fail2ban`, `/run/fail2ban/`, and any subdirectories and files within `/run/fail2ban`.
2. `/run/fail2ban.*`:
- This regular _expression_ matches paths that start with `/run/fail2ban` followed by zero or more characters (`.*`). It doesn't specify any specific structure beyond `/run/fail2ban`, so it matches paths like `/run/fail2ban`, `/run/fail2ban.log`, `/run/fail2ban/somefile`, etc. It doesn't specifically include subdirectories like the previous _expression_.
In summary, the first _expression_ is more specific, including subdirectories under `/run/fail2ban`, while the second _expression_ is more general, matching any path that starts with `/run/fail2ban`.
In SELinux, these two statements represent regular expressions used in file context definitions. Let's break down each one:
1. `/run/fail2ban(/.*)?`:
- This regular _expression_ matches paths that start with `/run/fail2ban/` followed by zero or more characters (`.*`) and optionally followed by a forward slash and zero or more characters (`(/.*)?`). Essentially, it matches paths like `/run/fail2ban`, `/run/fail2ban/`, and any subdirectories and files within `/run/fail2ban`.
2. `/run/fail2ban.*`:
- This regular _expression_ matches paths that start with `/run/fail2ban` followed by zero or more characters (`.*`). It doesn't specify any specific structure beyond `/run/fail2ban`, so it matches paths like `/run/fail2ban`, `/run/fail2ban.log`, `/run/fail2ban/somefile`, etc. It doesn't specifically include subdirectories like the previous _expression_.
In summary, the first _expression_ is more specific, including subdirectories under `/run/fail2ban`, while the second _expression_ is more general, matching any path that starts with `/run/fail2ban`.
---
It doesn't look like it would make a difference for the specific issue...
Thanks,
Richard
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