unitproc/bktemp-timeEpochNS

   1 #!/bin/bash
   2 # Desc: Get timestamp in nanoseconds
   3
   4 timeEpochNS() {
   5     # Desc: Get epoch nanoseconds
   6     # Usage: timeEpochNS
   7     # Version 0.1.2
   8     # Input: (none)
   9     # Output: Nanoseconds since 1970-01-01
  10     # Depends: date 8
  11     local currentTime epochSeconds fracNanosec epochNanosec
  12     currentTime="$(date +%s.%N)";
  13     epochSeconds="$(echo "$currentTime" | cut -d. -f1)";
  14     fracNanosec="$(echo "$currentTime" | cut -d. -f2)";
  15     epochNanosec="$(( ("$epochSeconds" * 1000000000) + ("$fracNanosec") ))";
  16     echo "$epochNanosec";
  17 } # Nanoseconds since 1970-01-01
  18
  19 #==BEGIN sample code==
  20 echo "It's been $(timeEpochNS) nanoseconds since 1970-01-01.";
  21 #==END sample code==
  22
  23 # Author: Steven Baltakatei Sandoval
  24 # License: GPLv3+