Description : The who command is used to get information about currently logged in user on to system.
What is use of who command in Linux?
The Linux “who” command lets you display the users currently logged in to your UNIX or Linux operating system. Whenever a user needs to know about how many users are using or are logged-in into a particular Linux-based operating system, he/she can use the “who” command to get that information.
What is the work of who command?
The standard Unix command who displays a list of users who are currently logged into the computer. The who command is related to the command w , which provides the same information but also displays additional data and statistics.
What is output of who command?
Explanation: who command output the details of the users who are currently logged in to the system. The output includes username, terminal name (on which they are logged in), date and time of their login etc. 11.
What is the Sudo command?
sudo allows a permitted user to execute a command as the superuser or another user, as specified by the security policy. … If a command is specified, it is passed to the shell for execution via the shell’s -c option. If no command is specified, an interactive shell is executed.
What is Linux time?
time command in Linux is used to execute a command and prints a summary of real-time, user CPU time and system CPU time spent by executing a command when it terminates.
How do you use su?
The Linux command ‘su’ is used to switch from one account to another. User will be prompted for the password of the user switching to. Users can also use it to switch to root account. If user types only ‘su’ without any option then It will be considered as root and user will be prompted to enter root user password.
What is the purpose of in Unix?
Unix is an operating system. It supports multitasking and multi-user functionality. Unix is most widely used in all forms of computing systems such as desktop, laptop, and servers. On Unix, there is a Graphical user interface similar to windows that support easy navigation and support environment.
What are features of Unix?
The UNIX operating system supports the following features and capabilities:
- Multitasking and multiuser.
- Programming interface.
- Use of files as abstractions of devices and other objects.
- Built-in networking (TCP/IP is standard)
- Persistent system service processes called “daemons” and managed by init or inet.