Linux, Ubuntu, Debian, Mint, CentOS Tutorials
The cron or crontab are a command and service used to run scheduled commands and scripts in Linux operating systems. The cron is used to set scheduled commands and execute them at specified times or intervals. This operation is error prone where we may need to check if the specified cron job is executed properly. … Read more
Linux and Unix operating systems provide the mount command in order to attach file systems, disks, partitions, USB drive, cdrom, and even network shares into the local system. As a dynamic operation, we may also use the umount command in order to detach mounted devices. List Mounted Devices/File Systems Before mounting some devices or file … Read more
The egrep command is an extended version of the grep command. The egrep name comes from the Extended Global Regular Expression Print . The egrep command simply searches single or multiple specified files for a specific pattern which can be also a Regular Expression. The egrep command is the grep -E implementation where the -E … Read more
Linux provides different privileges for different account types. The user is a regular user who has normal user privileges. The root is a specific user account which is the administrator or super admin of the Linux system. A regular user can not accomplish all tasks as it has limited privileges and permissions. In order to … Read more
Linux users are assigned to different groups to get different permissions. A single user may have single or multiple groups. In this tutorial, we examine how to change user groups in Linux operating system. Linux Group Types There are two types of Linux Groups. First is the primary group which is generally the same as … Read more
Linux distributions stores different information about the user accounts. The User Full Name is also stored for the users and located inside the /etc/passwd file. The user’s full name is requested during user account creation. But it can be changed later in different ways. The user’s full name can be changed via a command-line interface … Read more
Linux is a multiuser operating system where a single computer can be used by multiple users with multiple accounts. A user can change the current user into another user or root user via a command-line interface or GUI. In this tutorial, we examine different ways to change users in Linux. Change User Using su Command … Read more
Containers are an easy way to run some applications in a lightweight way. A lot of containers are created in daily usage and we may need to remove these containers. In this tutorial, we examine how to remove all containers. List All Containers Before removing all containers we can list all containers by using the … Read more
Linux is a multi tasking and multi user operating system which can be run multiple processes at the same time. In order to accomplish these Linux can run multiple processes at the same time with different purposes, features, owners etc. The ps command is used to list processes in different ways. the ps command can … Read more
Linux alias is used to create an alias for the Linux commands with their options or parameters. The alias is generally used for a single command but there is no restriction on the command count. We can use the Linux alias to create an alias for two or more commands or simply multiple commands. Create … Read more