Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-youtube-lyte domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/wordpress/wp-includes/functions.php on line 6114

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wordpress-seo domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/wordpress/wp-includes/functions.php on line 6114
Linux How-Tos Archives - Page 2 of 2 - The Grok Shop

Linux How-Tos


Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/wordpress/wp-includes/kses.php on line 1805

Linux Kernel – Check Installed and Switch Boot Kernel

Leave a Comment / Linux How-Tos, System Administration /

See Installed Kernels In Debian & Ubuntu, we can see the installed kernels with: % dpkg –list | grep linux-image ii linux-image-3.16.0-4-amd64 3.16.51-3 amd64 Linux 3.16 for 64-bit PCs ii linux-image-3.16.0-6-amd64 3.16.56-1+deb8u1 amd64 Linux 3.16 for 64-bit PCs ii linux-image-4.9.0-11-amd64 4.9.189-3 amd64 Linux 4.9 for 64-bit PCs ii linux-image-amd64 In Fedora / CentOS / RedHat […]

Linux Kernel – Check Installed and Switch Boot Kernel Read More »

Debugging and Tracing In Postfix

Leave a Comment / Linux How-Tos, Postfix, System Administration /

Turn up logging for individual clients A really nice feature Postfix has is this ability to debug individually-specified hosts and this is how you do that.  Just add this to your main.cf: # Debug individually-specified hosts debug_peer_level=3 debug_peer_list=regexp:/etc/postfix/debug_peers In this case I have set the debug level to 3.  The default level is 2.  Also

Debugging and Tracing In Postfix Read More »

Postfix Mail Server Install, Configure & Forward to Gmail

1 Comment / Linux How-Tos, System Administration /

Video Description The Postfix Mail Server (aka Mail Transfer Agent (MTA)) is installed, configured and set up to forward emails to a private email (Gmail in this case, but could be any external SMTP server) on a fresh Debian 9 system. The Blog Variant Installation We’ll start by opening a terminal from an non-root account

Postfix Mail Server Install, Configure & Forward to Gmail Read More »

Linux – Switching to zsh

Leave a Comment / Linux How-Tos, Software Engineering, System Administration /

zsh (“zee shell”) is awesome.  Alas, its still not installed by default in most Linux distributions.  Here’s how to install & configure zsh on Debian 9: grokman@li598-26:~$ sudo apt-get update [sudo] password for grokman: Ign:1 http://mirrors.linode.com/debian stretch InRelease Get:2 http://mirrors.linode.com/debian-security stretch/updates InRelease [94.3 kB] Get:3 http://mirrors.linode.com/debian stretch-updates InRelease [91.0 kB] Hit:4 http://mirrors.linode.com/debian stretch Release Fetched

Linux – Switching to zsh Read More »

Linux – How To Create a Sudo User

Leave a Comment / Linux How-Tos, Software Engineering, Website Creation /

For admin work, using a non-root user with super-user privileges is good practice.  This user has to be created.  Let’s see how its done with an example on Debian 9: First we SSH into our target machine: $ ssh root@grokshop.tv Enter passphrase for key '/c/Users/[user]/.ssh/id_rsa': Linux li598-26.members.linode.com 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1 (2019-04-12) x86_64 The

Linux – How To Create a Sudo User Read More »