Linux – sudo file
The sudo command allows you to run programs with the security privileges of another user. Usually this command is used to run command as a superuser. The configuration files are : /etc/sudoers /etc/sudoers.d/* Instead of…
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Redhat – Generating SoS report
The SoS report command is a tool that collects various details from a Redhat Linux server. These details include configuration details, system information and diagnostic information such as the running kernel version, loaded modules, and…
Redhat – Configuring network interfaces – nmcli
NetworkManager Command Line Interface – The nmcli is a command-line utility which is used for controlling NetworkManager and reporting network status. View status of physical network device attached to a system [root@centos9vm ~]# nmcli device…
Redhat – Basic network troubleshooting commands
The way to configure network settings have drastically changes in versions after RHEL 7. The earlier method can be found in the below link: Check the available network links, the devices connected and…
SELINUX
SELinux is a set of security rules using which we can control the processes that can access specific files, folders and ports. These processes, files, folders and ports has a special security label called SELinux…
SSH : Password-less authentication
Post updated on Jan 2024 At times, for example if a server has a script that needs to copy a file to a client via SSH, it will be good if the server can SSH…