• troubleshooting Fixing NMTUI Not Working on CentOS 7
    Linux

    Troubleshooting: Fixing NMTUI Not Working on CentOS 7

    November 11, 2024 - By 

    If you’re using CentOS 7 and are having trouble getting NMTUI (NetworkManager Text User Interface) to work properly, you’re not alone. This issue can arise for various reasons, but often, it’s due to improper installation or configuration of the NetworkManager service. In this article, we’ll walk you through the steps to resolve issues where nmtui doesn’t work, using some basic commands to install and configure NetworkManager on CentOS 7. What is NMTUI? Before diving into the troubleshooting steps, let’s clarify what NMTUI is. NMTUI is a text-based user interface for managing network connections on Linux systems using NetworkManager. It’s useful…

  • Linux

    How to schedule a command on linux

    December 20, 2022 - By 

    How to schedule a command on linux You can edit the crontab file to execute the command on scheduled time. Below are the examples of crontab . Linux Crontab Format MIN HOUR DOM MON DOW CMD Table: Crontab Fields and Allowed Ranges (Linux Crontab Syntax) Field Description Allowed Value MIN Minute field 0 to 59 HOUR Hour field 0 to 23 DOM Day of Month 1-31 MON Month field 1-12 DOW Day Of Week 0-6 CMD Command Any command to be executed.

  • Linux

    How to access Centos 7 with windows RDP

    February 12, 2022 - By 

    How to access Centos 7 with windows RDP If you want to access your Centos 7 server with windows RDP same as you are accessing windows machine . Then you need the following packege to install xRDP 1- Add epel reposetry # yum install -y epel-release 2- Install xRDP # yum install -y xrdp

  • Linux

    Peer cert cannot be verified or peer cert invalid

    February 12, 2022 - By 

    Peer cert cannot be verified or peer cert invalid while using yum If you are getting above error then perform the following to resolve the yum error. 1- check and correct the date and time of the server. 2- Check /etc/hosts file for any false DNS resolutions of servers. 3-Disable SSL verification by adding    sslverify=false in /etc/yum.conf 4- Check repo file is using http or https and verify url.

  • Linux

    How to access data after booting with Sysrcd rescue system

    February 12, 2022 - By 

    How to access data after booting with Sysrcd rescue system If you have servers in cloud or rented server on data center . some time its currepted or you need to get databack or edit and currect files. you are booting with Sysrcd rescue system           After booting get ssh access and login create a folder to mount your data or partition mkdir  /backup

  • Linux

    centos 5.11 yum repository

    April 2, 2021 - By 

    centos 5.11 yum repository It is now EOD no updates available. but we require yum repo to install old applications . go to and run cd /etc/yum.repos.d for i in $(ls *.repo); do mv $i $i.orig; done copy the below code and save as  CentOS-Base.repo # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If…

  • Linux

    How to check Internet Speed on Centos CLI

    March 5, 2021 - By 

    How to check Internet Speed on Centos CLI Speedtest-cli is Python script  its works on Python program. you must have Python installed. check if have installed . python –version python3 –version lsb_release -a if you have not install then install it by # yum install python Download the script #wget -O speedtest-cli https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py #chmod +x speedtest-cli Now check the internet speed #./speedtest-cli or #python speedtest-cli Source link 

  • Linux

    Centos 6.x repository not working

    February 25, 2021 - By 

    Centos 6.4 repository not working just rename     /etc/yum.repos.d/CentOS-Base.repo cd  /etc/yum.repos.d/ mv  CentOS-Base.repo  CentOS-Base.repo.old copy and paste below code on command prompt they try to use yum . cat <<-'EOF' > /etc/yum.repos.d/CentOS-Base.repo [C6.4-base] name=CentOS-6.4 - Base baseurl=http://vault.centos.org/6.4/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=1 metadata_expire=never [C6.4-updates] name=CentOS-6.4 - Updates baseurl=http://vault.centos.org/6.4/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=1 metadata_expire=never [C6.4-extras] name=CentOS-6.4 - Extras baseurl=http://vault.centos.org/6.4/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=1 metadata_expire=never [C6.4-contrib] name=CentOS-6.4 - Contrib baseurl=http://vault.centos.org/6.4/contrib/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=0 metadata_expire=never [C6.4-centosplus] name=CentOS-6.4 - CentOSPlus baseurl=http://vault.centos.org/6.4/centosplus/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=0 metadata_expire=never EOF  

  • Linux

    Centos 7 Setup command not found

    January 25, 2021 - By 

    yum install setuptool -y yum install system-config-network* -y yum install system-config-firewall* -y yum install system-config-securitylevel-tui -y yum install system-config-keyboard -y yum install ntsysv -y yum install NetworkManager-tui nmtui