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The  $_ in  localtime $_ is not optional: without it, the function returns current local time; likewise gmtime().

The  -l (that's a small ell) command line switch may be useful: it will automatically  chomp the input record separator (IRS) on input and append the ORS on output. (IRS and ORS are both a newline by default.) As mentioned, not so important on input, but on output this gives you your converted time strings each on a separate line rather than as one (very long) line.

>cat utimes 1111111 22222222 333333333 >perl -wMstrict -lne "print scalar localtime $_" < utimes > ltimes >perl -wMstrict -lne "print scalar gmtime $_" < utimes > gmtimes >cat ltimes Tue Jan 13 15:38:31 1970 Mon Sep 14 23:50:22 1970 Thu Jul 24 19:35:33 1980 >cat gmtimes Tue Jan 13 20:38:31 1970 Tue Sep 15 04:50:22 1970 Fri Jul 25 00:35:33 1980
Example without  -l command line switch:
>perl -wMstrict -ne "print scalar localtime $_" < utimes > ltimes >cat ltimes Tue Jan 13 15:38:31 1970Mon Sep 14 23:50:22 1970Thu Jul 24 19:35:33 19 +80

In reply to Re^6: changing date format in and out by AnomalousMonk
in thread changing date format in and out by gio001

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