Multiple choice technology operating systems

CTRL-R is used for?

  1. run a executable in current directory

  2. To search the commands.

  3. To find list of users logged in

  4. List all the process currently running
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

B is correct because CTRL+R initiates reverse-i-search in bash, enabling interactive search through command history - as you type, it shows matching commands from history. A is wrong - './filename' executes binaries. C is wrong - 'who' or 'w' lists logged-in users. D is wrong - 'ps' or 'top' lists processes.

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