date +”%T. %6N” returns the current time with nanoseconds rounded to the first 6 digits, which is microseconds. date +”%T. %3N” returns the current time with nanoseconds rounded to the first 3 digits, which is milliseconds.

How do you get to milliseconds?

To convert a second measurement to a millisecond measurement, multiply the time by the conversion ratio. The time in milliseconds is equal to the seconds multiplied by 1,000.

How do I get Unix bash time?

Obtain UNIX epoch time using bash

Obtaining the UNIX epoch time using bash is easy. Use the build-in date command and instruct it to output the number of seconds since 1970-01-01 00:00:00 UTC. You can do this by passing a format string as parameter to the date command. The format string for UNIX epoch time is ‘%s’.