Thats better ... (the "-" was wrong in my previous posting )
HOSTNAME="${HOSTNAME//[^A-Za-z0-9_\-]/x}"
i attached a modified hostname.sh wich uses bash.
it can be startet manualy with
sudo /etc/init.d/hostname.sh start
The command should somehow run at startup ... but does not by default ?
** Attachment added: "hostname.sh"
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1507025/+attachment/4499613/+files/hostname.sh
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https://bugs.launchpad.net/bugs/1507025
Title:
Shell Command Injection with the hostname
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