Linux

If you have a LUKS2-encrypted partition and want to use a keyfile for automatic mounting, follow the steps below. This guide assumes your disk is already encrypted with LUKS2. 1. Create a Keyfile Start by generating a random keyfile. This file will be used to unlock the encrypted partition. sudo

This tutorial is intended for Fedora systems installed with the default btrfs disk configuration. After performing these steps, you will be able to see and access snapshots via GRUB, but /boot partition will not be included in the snapshots because it is in EXT4 format by default in Fedora. Protect

With auditd you can get logs of changes in files and folders at Linux system. Since everything is a file in Linux, you can create logs of user creation, password change, etc. Install auditd: apt install auditd Edit rules file and add desired rules: nano /etc/audit/rules.d/audit.

If you forgot your root password you can reset the password with this instructions: * Reboot your Server/PC and press Shift or Esc depending toyour system. * Press "e" from keyboard at the GRUP screen. * Go to the line that begins with "linux" and delete the rest

With this command you can see the proccesses that uses swap: find /proc -maxdepth 2 -path "/proc/[0-9]*/status" -readable -exec awk -v FS=":" '{process[$1]=$2;sub(/^[ \t]+/,"",process[$1]);} END {if(process["VmSwap"] && process["VmSwap"

You can test your SYSLOG forwarding with this commands at the receiving server. tcpdump -vv -i eth1 port 514 | grep 10.1.5.115 or ngrep -d any host 10.1.5.115 and port 514 Change the IP address and network interface according to your use case.

If you encountered a "access denied" error while performing task while using WinSCP use this modification in settings: * Edit your WinSCP profile * Click Advanced and go to Envronment > SFTP * Write the following command as SFTP server: sudo su -c /usr/lib/sftp-server * Save and connect