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[PROBLEM] How to uninstall fail2ban? it fails with errors. - Printable Version

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How to uninstall fail2ban? it fails with errors. - postcd - 2nd Jul, 2024 04:42 AM

I have installed fail2ban: http://forum.xbian.org/thread-4178-post-37899.html#pid37899 (now closed Sleepy)
But it can't uninstall now (as per the output)

Quote:dpkg: error processing package fail2ban (--remove):
installed fail2ban package pre-removal script subprocess returned error exit status 1

Running on BCM2711 with XBian 12.0 - Bullseye, kernel: Linux ARM 32-bit version 6.1.66+

Please what to try?

UPDATE:
I have prefixed three lines of the second "if" confition in /var/lib/dpkg/info/fail2ban.prerm by character "#" and then it removed the package without "pre-removal script" error. Thanks


RE: How to uninstall fail2ban? it fails with errors. - Nachteule - 17th Jul, 2024 06:23 PM

A bit late, but there are snapshots for such cases. Simply revert to the snapshot that was created before file2ban was installed.

Another alternative would be to comment out the command that produces the error in the maintenance script and try again. I have had to do this several times, Theese scripts are located in /var/lib/dpkg/info/, in your case files /var/lib/dpkg/info/fail2ban*

hth


RE: How to uninstall fail2ban? it fails with errors. - jamegreatjame - 23rd Jul, 2024 04:43 PM

(17th Jul, 2024 06:23 PM)Nachteule Wrote:  A bit late, but there are snapshots for such cases. Simply revert to the snapshot that was created before file2ban was installed.

Another alternative would be to comment out the command that produces the error in the maintenance script and try again. I have had to do this several times, Theese scripts are located in /var/lib/dpkg/info/, in your case files /var/lib/dpkg/info/fail2ban*

hth

Yes, It is really helpful, thank you for sharing this tip.


RE: How to uninstall fail2ban? it fails with errors. - sarausa0106 - 9th Oct, 2024 02:02 PM

If you already have other security measures in place (such as firewalls, VPNs, or other security software), you may feel that Fail2Ban is no longer necessary. Suika game


RE: How to uninstall fail2ban? it fails with errors. - asher - 3rd Dec, 2024 11:53 AM

(17th Jul, 2024 06:23 PM)Nachteule bitlife Wrote:  A bit late, but there are snapshots for such cases. Simply revert to the snapshot that was created before file2ban was installed.

Another alternative would be to comment out the command that produces the error in the maintenance script and try again. I have had to do this several times, Theese scripts are located in /var/lib/dpkg/info/, in your case files /var/lib/dpkg/info/fail2ban*

hth

Thanks for sharing the solution! The idea of ​​using snapshots and editing scripts is beneficial and practical in situations like this.


RE: How to uninstall fail2ban? it fails with errors. - Alice12 - 8th Mar, 2025 07:06 PM

If the uninstall fails with errors, you might need to manually remove Fail2Ban files
Love Pawsona


RE: How to uninstall fail2ban? it fails with errors. - oliviawilde168 - 21st Mar, 2025 12:31 PM

(17th Jul, 2024 06:23 PM)Nachteule Wrote:  A bit late, but there are snapshots for such cases. Simply revert to the snapshot that was created before file2ban was installed.

Another alternative would be to comment out the command that produces the error in the maintenance script and try again. I have had to do this several times, Theese scripts are located in /var/lib/dpkg/info/, in your case files /var/lib/dpkg/info/fail2ban* cookie clicker

hth
Before commenting out a command, try to understand its purpose. If it's crucial for the package's functionality, you'll need to find a proper solution, not just bypass the error.


RE: How to uninstall fail2ban? it fails with errors. - urielvalerie - 24th Mar, 2025 07:17 PM

(17th Jul, 2024 06:23 PM)Nachteule Geometry Dash Wrote:  A bit late, but there are snapshots for such cases. Simply revert to the snapshot that was created before file2ban was installed.

Another alternative would be to comment out the command that produces the error in the maintenance script and try again. I have had to do this several times, Theese scripts are located in /var/lib/dpkg/info/, in your case files /var/lib/dpkg/info/fail2ban*

hth

Try to figure out what a command is trying to do before commenting it out. You should not simply ignore the error if it is essential to the package's operation; instead, you should investigate possible solutions.