Thank you, I've followed the tut. Here's what I got:
Warning: The command '/usr/sbin/adduser' has been replaced by a script: /usr/sbin/adduser: a /usr/bin/perl script, ASCII text executable
Warning: The command '/usr/bin/ldd' has been replaced by a script: /usr/bin/ldd: Bourne-Again shell script, ASCII text executable
Warning: The command '/usr/bin/lwp-request' has been replaced by a script: /usr/bin/lwp-request: a /usr/bin/perl -w script, ASCII text executable
Warning: The command '/bin/which' has been replaced by a script: /bin/which: POSIX shell script, ASCII text executable
Warning: The following processes are using deleted files:
Process: /usr/sbin/mysqld PID: 682 File: /tmp/ibah5HJE
Warning: Suspicious file types found in /dev:
/dev/.udev/rules.d/root.rules: ASCII text
Warning: Hidden directory found: /dev/.udev
Warning: Hidden file found: /dev/.initramfs: symbolic link to `/run/initramfs'
Looks like nothing is extremely wrong. Am I right?