A Linux user reports that an application will not open and gives the error.
Only one instance of the application may run at one time.
A root administrator logs on to the device and opens a terminal.
Which of the following pairs of tools will be needed to ensure no other instances of the software are currently running?
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A. B. C. D. E.D.
The correct answer is D. ps and kill.
In this scenario, the Linux user is trying to open an application but is receiving an error that states "Only one instance of the application may run at one time." This suggests that another instance of the same application may already be running on the device.
To ensure that no other instances of the software are currently running, the root administrator can use two tools:
ps: This command is used to display information about the currently running processes on the Linux system. By using the "ps" command with the appropriate flags and options, the administrator can search for any instances of the application that may be running.
kill: This command is used to terminate a running process on the Linux system. By using the "kill" command followed by the appropriate process ID (PID) of the running instance of the application, the administrator can forcefully terminate the running instance, allowing the user to open the application again.
Therefore, the correct pair of tools needed to ensure no other instances of the software are currently running is "ps" and "kill".
Option A: pad and chmod are not relevant to this scenario, as they are used to modify file permissions and access control on Linux systems.
Option B: sudo and vi are not relevant to this scenario, as "sudo" is a command used to execute commands with administrative privileges, and "vi" is a text editor for Linux systems.
Option C: ls and chown are not relevant to this scenario, as "ls" is a command used to list the contents of a directory, and "chown" is used to change the ownership of files and directories.
Option E: cp and rm are not relevant to this scenario, as "cp" is used to copy files and directories, and "rm" is used to remove files and directories.