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Troubleshooting Solution

How do I trace email to configure postfix?

I am trying to set up an email server and I am having some issues. Postfix seems to be configured …

Building portable Data Science Home Lab under an Hour.

In my work in the IT industry, which spans over 20 years, data has always fascinated me. How we …
Troubleshooting Solution

vmware/redhat vm : how to fix  IP of Redhat Linux  guest VM connected to internet

I am doing personal, student lab setup in my laptop, to practice some softwares.

env details : vmware …
Troubleshooting Solution

linux - how to configure the bash session timeout

Red Hat Linux version 8.3 - In a bash terminal session, it's annoying after every few minutes when I …
Troubleshooting Solution

How can I connect from Windows 10 to Virtual Box VM with RedHat 8.4?


I purchased a book and hoping to learn Red Hat Linux.  Per the book have installed Oracle Virtual

Troubleshooting Solution

Redhat Decision Mgr hardening & cyber considerations


We're deploying Redhat Decision Manager:

a) is there a hardening guide for it & where to obtain?


Troubleshooting Solution

How do I extend an xfs partition across multiple disks in Redhat 8 / RockyLinux 8?


I need help extending a partition across 2 physical disks in a RockyLinux / Redhat 8 VM.  I have a

Troubleshooting Solution

Permission issue

What to adjust, due to the error below?

[smb01@28-218-217-172-on-nets samba]$ cp …
Troubleshooting Solution

shell script to create partitions on linux


I want to partition Amazon Linux 2 (similar to RHEL 7 or CentOS 7) server using shell script. I also

Troubleshooting Solution

"Sysprep" Linux

Hello Guys,

Has anybody have any similar tool to " sysprep" a Linux Machine? (Deb / REHL)

Troubleshooting Solution

SPF Records.  "spf1" has quite a few entries and has reached character limit.

I have a TXT line in my DNS domain zone file.

TXT   "v=spf1 ip4:x.x.x.x/21 ip4:x.x.x.x/24 …
Troubleshooting Solution

Seeking Sendmail Salvation! Please help me solve "unable to qualify my own domain name".


I have setup a LAMP Stack in AWS using Amazon Linux 2 (essentially Redhat). In doing so I setup

Troubleshooting Solution

Is it possible to install minikube (k8s) on redhat (VM) archi s390x (LinuxONE - IBM) ?



I'm trying to install minikube k8s (Kubernetes) on linux redhat 8 distribution. The VM is on

Troubleshooting Solution

Automatically take the output of my non-partitioned disks.

Hello Experts,

How can I automatically take the output of my non partitioned disks? (it will be …
Troubleshooting Solution

Apache's www-data user equivalent on Redhat

Hi, this is a simple question. When we worked with Debian/Ubuntu, the installation of Apache from …
Troubleshooting Solution

OpenSSL library not found

Hi, I need your help to fix this issue. I have installed OpenSSL-1.1.0g which is required by
Troubleshooting Solution

How to get DB0407 Red Hat automation with Ansible training at very low cost

I can't afford the 2+k it costs for formal training on DB0407 Red Hat automation with Ansible

Troubleshooting Solution

Removing DES and 3DES ciphers in linux RedHat 6.8

Hi, I need help removing block cipher algorithms with block size of 64 bits like (DES and 3DES) …
Troubleshooting Solution

Issue to Ubuntu

What should be corrected, due to attached screenshot after having started Ubuntu Version 20.04?

Troubleshooting Solution

Linux group


I'm not Linux expert and just try to understand how the OS works.

What is the difference between …

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