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Can somebody please tell me how to do string value conversion to epoch time in ksh shell (HP-UX). My string value is of format "20170610 08:18:30". I was able to do this in bash using date -d"$stringdate $stringtime" +%s. Also date +%s doesn't work in ksh, I have used perl -e "print time" to get epoch time but I am unable to convert my string to epoch value.

ArturFH
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Deepak Mohan
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  • Please run `type date` either in bash as in ksh and check, if results are the same. What happens when you run `date +%s` in ksh? – ArturFH Jun 10 '17 at 16:47
  • Running this command in Ksh gives error. It says " bad format character - s". I think date command option '+%s' is not supported in Ksh. Perl or mathematical formula should be used instead. – Deepak Mohan Jun 10 '17 at 17:06
  • What about `type date` results? Did you check that? – ArturFH Jun 10 '17 at 17:50
  • type date in bash gives output :- date is a tracked alias for /bin/date. Same command in ksh shell gives output :- date is a tracked alias for /usr/bin/date. Also, I am using different server for bash and ksh. – Deepak Mohan Jun 10 '17 at 18:24
  • type date in bash gives:- date is tracked alias for /bin/date and same command in ksh gives output:- date is a tracked alias for /usr/bin/date – Deepak Mohan Jun 10 '17 at 18:28
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    So, it has nothing to do with the shell, but with the date implementation on those machines. – ArturFH Jun 10 '17 at 18:58
  • Thanks for the information Artur. But then how do I make the conversion on that machine? I searched everywhere but couldn't find any. I need to get epoch value from the string. Is their any other way to do this conversion. – Deepak Mohan Jun 10 '17 at 19:34
  • Check the BSD section from [this answer](https://stackoverflow.com/a/14805690/2989411). If it won't help, google for: "how to convert data string to epoch in ". – ArturFH Jun 10 '17 at 19:37
  • what version of ksh are you using? – pynexj Jun 12 '17 at 09:47
  • I am using HP-UX B.11.11 U 9000/800 – Deepak Mohan Jun 12 '17 at 18:47

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