Question
In Unix/Linux operating systems, which of the following
commands is used to send a process to the background, allowing the terminal to continue accepting commands while the process runs?ΒSolution
The ampersand (&) is used to send a process to the background in Unix/Linux systems, allowing the terminal to remain available for other commands while the process continues running in the background. When a command is followed by &, the shell executes the command as a background process, freeing the terminal for additional input. This is particularly useful when running long-running processes or tasks that do not require constant interaction with the terminal. Why Other Options are Incorrect: A) fg: fg brings a background process to the foreground, the opposite of what is required in this scenario. B) kill: kill terminates a process rather than sending it to the background. C) bg: bg resumes a suspended job in the background but does not initiate a background process. D) nohup: nohup allows a command to continue running after the user has logged out, but it does not send a process to the background directly like & does.Bottom of Form
Pipe C alone can empty a tank in 21 hours. Pipes A and B alone can fill the same tank in 7 hours and 14 hours, respectively. If pipes A and C are opened...
Pipe 'A' alone takes 16 minutes to fill half of the empty tank. Pipe 'B' is thrice as efficient as pipe 'A'. Find the percentage of the tank filled by ...
An inlet pipe can fill an empty tank in 36 minutes whereas an outlet pipe can empty the fully filled tank in 54 minutes. Find the time taken by both the...
An inlet pipe can fill an empty tank in 24 minutes whereas an outlet pipe can empty the fully filled tank in 36 minutes. Find the time taken by both the...
Time taken by pipe 'A' to fill a tank is 45 minutes. When both pipes 'A' and 'B' are opened together, the tank gets filled in 18 minutes. Find the time ...
Pipes A and B can fill a tank in 43.2 minutes and 108 minutes, respectively. Pipe C can empty it at 3 litres/minute. When all the three pipes are opened...
Pipe βXβ alone can fill a tank in 20 hours. When pipe βXβ and βYβ are opened together, they can fill 60% of the same tank in 6 hours. Find t...
Pipe βAβ can fill a 120-litre tank in 15 hours. If pipe βAβ is 25% more efficient than pipe βCβ whereas pipe βBβ is 50% more efficient t...
Pipes βAβ and βBβ can fill a tank in 6 hours and 9 hours, respectively. If pipe βCβ is opened along with pipes βAβ and βBβ, then the...
Pipe A can fill a tank in 45 minutes while pipe B can fill it in ____ minutes. Thereβs a leak in the tank which can empty it in _____minutes. When bot...