What does the fg command do in UNIX?
a) Brings a background process to the foreground
b) Pauses a process
c) Terminates a background process
d) Lists active processes
Answer:
a) Brings a background process to the foreground
Explanation:
The fg command in UNIX is used to bring a background process to the foreground. When a process is running in the background, fg allows you to resume control of it in the foreground, so you can interact with it directly.
For example, if a background process is running with job number %1, you can run fg %1 to bring it to the foreground. This is useful when you need to interact with a previously backgrounded process, such as terminating it or providing input.
Knowing how to use the fg command is essential for process control in UNIX. It provides flexibility for switching between background and foreground tasks, enabling more efficient multitasking in the terminal.