Blank Screen on Ubuntu Server

- by mahmood

Blank screen after idle: setterm --blank 1 (the number is the timeout in minutes)

Blank screen immediately: setterm --blank force

To turn the screen back on, run setterm --blank poke

Permanent Solution (Automatic on Boot)

sudo nano /etc/systemd/system/setterm-blank.service
[Unit]
Description=Blank screen after 1 minute idle
After=multi-user.target

[Service]
Type=oneshot
Environment="TERM=linux"
ExecStart=/usr/bin/setterm --blank 1 --term linux
StandardOutput=tty
TTYPath=/dev/tty0

[Install]
WantedBy=multi-user.target
sudo systemctl enable setterm-blank.service
sudo systemctl start setterm-blank.service

Or

sudo nano /etc/default/grub

Find the line GRUB_CMDLINE_LINUX_DEFAULT and add consoleblank=60 (60 = seconds before blanking):

GRUB_CMDLINE_LINUX_DEFAULT="quiet consoleblank=60"
sudo update-grub
sudo reboot

 

Install Chocolatey on Windows

- by mahmood 
Set-ExecutionPolicy Bypass
Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))

 

Capture All Traffic to and from a Specific IP Address in Wireshark

- by mahmood 
ip.addr == 104.19.230.21

  • ip.addr matches packets where the source OR destination IP is 104.19.230.21.

  • It works for both IPv4 and IPv6 (though here it’s IPv4).

You could also use:

ip.src == 104.19.230.21 or ip.dst == 104.19.230.21

  • If you want to see only traffic from that IP (responses to you), use ip.src == 104.19.230.21.

  • If you want only traffic to that IP (your requests), use ip.dst == 104.19.230.21.

Single WordPress Instance with Multiple Domains

- by mahmood

Add the following code to your wp-config.php file, right before the line that says /* That's all, stop editing! Happy publishing. */

$domain = array("domain1.com", "www.domain1.com", "domain2.com", "www.domain2.com");
if (in_array($_SERVER['HTTP_HOST'], $domain)) {
    define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST']);
    define('WP_HOME', 'http://' . $_SERVER['HTTP_HOST']);
}

This code dynamically sets the site URL based on how a visitor accesses the site, ensuring both domains work correctly.

Important Considerations:

  • Allow All Domains: If you want to allow any domain pointing to your server, replace the if (in_array(...)) block with just the two define lines, though using the domain array is safer to prevent unwanted access.

  • HTTPS Support: If your site uses HTTPS, change 'http://' to 'https://' in both define statements.

  • Subdirectory Installations: If WordPress is in a subdirectory (e.g., /wp), modify the code accordingly: define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST'] . '/wp');.

  • Avoid Plugin Conflicts: When testing, temporarily deactivate plugins to check for conflicts.