Display local time as YYYY-MM-DD HH:MM:SS.
Which command is appropriate?
date +FORMAT accepts %F for the date and %T for time with seconds.
Detailed explanation
date '+%F %T'Correct. %F expands to the date and %T to the time with seconds.
date '+%Z %z'Incorrect. %Z and %z display timezone information.
date '+%s'Incorrect. %s displays epoch seconds.
hwclock --showIncorrect. hwclock reads the RTC rather than formatting date output as requested.
Try it yourself
An example you can run in a temporary verification environment.
date '+%F %T'Expected result
実行時点のYYYY-MM-DD HH:MM:SSKey points
- +FORMAT
- %F is date
- %T is time
Notes
- Environment: GNU date / 読取のみ
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.