How to restrict direct root user password login on Linux ?
In this post, we will see how to restrict direct root login via password, and only allow login via keys. To achieve this, we need to change below setting in...
Author: Saket Jain
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How to set timezone on RHEL Linux Host from RHEL 7 onwards ?
Lets see how to set timezone on Redhat Linux from RHEL 7 onwards. Earlier we used to link the timezone files. However now we can do it via a command...
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Solved: root is not allowed to run sudo on ngelinux. This incident will be reported.
In this post, we will see one of the common error while using sudo and how to fix that. I. Problem [root@ngelinux bin]# sudo -u mysqld sh /monitor/mysqld/scripts/mysqld_NGEL.sh root is...
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How to reinstall an installed package using YUM/DNF in linux ?
In this post, we will see how to reinstall any installed package in Linux using Yum or dnf. 1. Check out the package and version available to install/reinstall. [ngeroot@ngelinux01 grub2]#...
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How to remove a directory “-p” in Linux ?
In this post, lets see how to remove a file or directory starting with “-“. This is bit tricky as you can’t remove it directly. Lets check this out. 1....
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How to extract private key- encrypted or decrypted from PFX certificate file ?
Today in this post, we will see how to extract the private key from PFX certificate file. We will first extract the encrypted key and then we will extract the...
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Solved: ndo2db: Could not bind socket: Address already in use.
In this post, we will see one of the common error message of ndo2db and its solution. I. Error Message [root@ngelinux01 ~]# /usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg -f Could not bind socket:...