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Category Archives: Centos 8

Set runlevel on startup on Rocky Linux/Centos/Redhat

Software Effect Enterprises, Inc Posted on February 10, 2022 by SEEIAugust 30, 2022

The following applies to version 7 and higher To have your system start up in text mode systemctl set-default multi-user.target To have your system start up as a graphical target systemctl set-default graphical.target Start in Single User systemctl set-default rescue.target … Continue reading →

Posted in Centos 7, Centos 8, Rocky Linux | Tagged graphical, run level, target, text

How to mount raw images (.img) images on Linux

Software Effect Enterprises, Inc Posted on April 7, 2021 by SEEIApril 7, 2021

If you have a few .img files coming as disk images from devices like floppies, CDs, DVDs, SD cards, etc, you will realize that you cannot mount the in Linux, because they contain a file system that has to be … Continue reading →

Posted in Centos, Centos 7, Centos 8, Linux | Tagged file, image, linux, mount

Could not apply stored configuration to monitors

Software Effect Enterprises, Inc Posted on December 6, 2020 by SEEIDecember 6, 2020

You log onto your linux system and you get the message “Could not apply the sotred configuration to monitors” Start a bash prompt cd ~/.config mv monitors.xml monitors.xml.zzz Log off and log back on again  

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Posted in Centos, Centos 6, Centos 7, Centos 8, Fedora, Mate | Tagged apply, centos, configuragtion, fedora, monitors, redhat

Set Time Zone From ISC DHCP Server

Software Effect Enterprises, Inc Posted on November 5, 2020 by SEEINovember 5, 2020

Hand out the time zone from your ISC DHCP Server Add the following lines to the top of your dhcpd.conf file option PCode code 100 = text; option TCode code 101 = text; option PCode “EST5EDT4,M3.2.0/02:00,M11.1.0/02:00”; option TCode “America/NewYork”;   … Continue reading →

Posted in Centos 7, Centos 8, DHCP

Mate on Centos 8

Software Effect Enterprises, Inc Posted on October 29, 2019 by SEEIMarch 10, 2020

  I wanted to get Mate installed on my Centos 8 system. I had to dig around a bit but I found the info I needed. Keep in mind this is an “unofficial” Centos 8 repository and if you have … Continue reading →

Posted in Centos 8, Mate | Tagged centos 8, mate

Recover lost root password on Centos / Redhat version 7 or 8 systems

Software Effect Enterprises, Inc Posted on February 27, 2020 by SEEIFebruary 27, 2020

  You will need console access – either a physical keyboard and monitor locally, or using the Virtual Machine remote console. You will need to be able to control the boot process. Reboot the machine. When the bootloader selection screen … Continue reading →

Posted in Centos 7, Centos 8 | Tagged centos, lost, password, redhat, root

Show available wifi networks

Software Effect Enterprises, Inc Posted on November 18, 2019 by SEEINovember 18, 2019

nmcli dev wifi nmcli -f ALL dev wifi For more information see here

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Posted in Centos, Centos 7, Centos 8 | Tagged network, wifi
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