Changing User Accounts in Linux – Chage Command
The chage (change age) command allows you to modify user accounts for their expiration. Linux allows you to configure your...
Gpasswd command – modifying some group features in Linux
The gpasswd command is the equivalent of the passwd command for groups. This command provides the ability to modify some...
GroupAdd and GroupMod commands
Groupadd command – adding groups to Linux The groupadd command provides the ability to add a new group to Linux....
How to change your forgotten root password on CentOS 7
I’m not used to forget things, especially important ones, such as passwords. But unfortunately, such things can happen to anyone...
Linux Documentation: Locating, Accessing, and Using it
We often have to find a solution to a Linux problem quickly – if we do not have access to...
Linux files: changing the attributes with the chattr command
Linux file systems support some additional attributes for files, attributes that can be assigned or changed using the chattr command....
Managing Links in Linux – ln Command
In Linux, a link is a way to assign multiple identities to a file, similar to Windows shortcuts. There are...
Manipulate files in Linux: rm command
The rm command (abridged from remove) deletes a file or a directory. The syntax of this command is simple: rm...
Useradd command – adding users to Linux
How often we add new users to a Linux system depends on the nature of the system we use: it...
Userdel command – deleting accounts in Linux
Deleting Linux user accounts is easy. Use the userdel command to delete that user’s entry from the /etc/passwd and /etc/shadow...
Installing and setting up Grafana in CentOS 7
Grafana is a time series analytics tool to measure and visualize a whole array of metrics. The most common usage...
How to install Prometheus in CentOS 7
Prometheus is a server monitoring service. It collects metrics (values) from configured target servers at certain preset intervals, evaluates certain...
