Using the date Command to Check/Update System Time
Using the date Command to Check/Update System Time |
|
Do NOT change the time while a pass is being tracked! |
|
You can use the date command to check and reset the system time. |
|||
| 1. |
Display the system time in GMT: |
||
| % date -u | |||
|
The GMT date and time for the moment at which you press the Return key will be displayed. |
|||
| 2. |
Check the time against an external clock to determine its accuracy. |
||
| 3. | SUPERUSER If the time is off by less than a few minutes, reset the system clock as follows: | ||
| a. | Run the date command, using the -a option to adjust the system clock by a specified number of seconds. For example: | ||
| # date -a 5 | (increment the system clock by 5 seconds) | ||
| # date -a -135 | (decrement the system clock by 2 minutes 15 seconds) | ||
| b. | Recheck the clock: | ||
| # date | |||
| c. | If necessary, continue adjusting the time in increments until the system time is correct. | ||
| 4. | SUPERUSER If the time is off by more than a few minutes, reset the clock to a specific time. For example: | ||
| # date -u 1234.56 | |||
| This will set the system time to: | |||
| 12:34:56 GMT | |||
| For more information about the date command, type man date at the UNIX command prompt (%). | |||
Last Update: $Date: 2001/05/17 18:59:23 $