Display time stamp in dd/mm/yyyy_hh:mm:ss:ms in Unix or Linux

Question

I need help to display date and time in desired format in Unix/ Linux. My desired format is: dd/mm/yyyy hh:mm:ss:ms in Unix or Linux. I got close using the following command:

echo $(date +%x_%r)

This returns:

08/20/2012_02:26:14 PM

Any suggestions?

Answer 1

date +%x_%H:%M:%S:%N

if you need to print only two first nums as ms:

date +%x_%H:%M:%S:%N | sed 's/\(:[0-9][0-9]\)[0-9]*$/\1/'

to store it in the var:

VAR=$(date +%x_%H:%M:%S:%N | sed 's/\(:[0-9][0-9]\)[0-9]*$/\1/')

Answer 2

man date

date +"%d/%m/%Y_%H:%M:%S:%N"

More useful reading:
How to format date for display or to use in a shell script

Answer 3

Something like this

date +'%d/%m/%Y_%H:%M:%S:%N'

Used %N for nanoseconds (000000000..999999999) since I did not find milliseconds right now