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Latest — Oct 8, 2024

Using a Keyfile for Automatic Mounting of LUKS2 Encrypted Partitions

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

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Displaying Snapshots in the Grub Menu on Fedora using Btrfs-Assistant and Grub-Btrfs

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

Docker Volume Backup Tutorial

To back up a Docker volume, we can run a temporary container that mounts the volume you want to back up and uses the tar command to create a compressed archive of the volume contents. docker run --rm \ -v "$VOLUME_NAME":/backup-volume \ -v "$(pwd)":/backup \ busybox

Creating and viewing auditd rules

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.

Updating timeout duration of elasticsearch service

If you encounter the "Job for elasticsearch.service failed because a timeout was exceeded" message after trying the start the elasticsearch service add this line to your ovverride.conf file: nano /etc/systemd/system/elasticsearch.service.d/override.conf [Service] TimeoutStartSec=180 Reload the daemon: systemctl daemon-reload And

Export extended Exchange Admin Audit Logs to a csv file

Create a powershell script file and save it as C:\ExchangeLogs\Exchange.PS1 For daily logs: $a = Search-AdminAuditLog -StartDate (Get-Date).AddDays(-1) $a | select CmdletName,ObjectModified,CmdletParameters,ModifiedProperties,Caller,ExternalAccess,Succeeded,Error,RunDate | Export-Csv "C:\ExchangeLogs\ExtendedAuditLogs_$(get-date -f yyyy-MM-dd).csv" -NoTypeInformation For hourly logs: $a = Search-AdminAuditLog -StartDate

Open ports in Oracle Cloud instances

Ports other than 22 are closed in Oracle Cloud OS images in default. You need to open ports in IPTABLES. If you want to open 80 and 443: * Edit the /etc/iptables/rules.v4 nano /etc/iptables/rules.v4 * Add this line below the line that opens the port 22:

Accessing to recovery and changing root password on Ubuntu

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

Checking the processes that uses swap memory in Linux

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"

Listing and changing Windows audits from command line

Quickly list and manipulate audit settings from command line: auditpol /get /category:* Lists all audit settings. auditpol /set /category:* /success:enable /failure:enable Enables all audits. auditpol /set /subcategory:"Logon" /success:enable /failure:enable Enables specified categories.