Re^2: changing date format in and out

Thanks,
well I understand and I agree that I will have to execute in a loop, what I am trying to learn is a way to create the while loop inside the perl world and not issue thousands of invocations to perl from a straight unix ksh loop, if you understand what I mean.
So can you please illustrate for me how can I structure an invocation statement(s) to perl with an incoming file name, an output file name and the real while loop as the core of what I will ask perl to execute for me?
Thanks !

Comment on Re^2: changing date format in and out

Replies are listed 'Best First'.
Re^3: changing date format in and out by McDarren (Abbot) on Feb 14, 2009 at 02:12 UTC
The example that was given to you is the guts of what you are asking for. Take the code that was given to you by mr_mischief, and save it in a file (lets call it foo.pl). Then just pass your input file through that, ie: `perl foo.pl < infile > outfile` [download] Although, you will probably want to change the line: `print (gmtime $_);` [download] to read: `print scalar gmtime($_);` [download] Or alternatively, if you want your output in local time, then: `print scalar localtime($_);` [download] Hope this helps, Darren	[reply] [d/l] [select]
Re^4: changing date format in and out by gio001 (Acolyte) on Feb 14, 2009 at 03:46 UTC
Great, thanks a lot! I hope not to impose on you for a very last favor, how would it be possible to consolidate this logic into a single perl line command (a one liner)? I hope you can show me, thanks again!	[reply]
Re^5: changing date format in and out by McDarren (Abbot) on Feb 14, 2009 at 03:53 UTC
`perl -ne 'print scalar localtime' < infile > outfile` [download] Notes: - the "-n" switch, causes perl to assume a "while <>" loop (see perldoc perlrun) - the $_ can be dropped, because it is implicit - there is no need to chomp, as you probably want the newline anyway Cheers, Darren :)	[reply] [d/l]
Re^6: changing date format in and out by AnomalousMonk (Archbishop) on Feb 14, 2009 at 05:57 UTC
Re^7: changing date format in and out by gio001 (Acolyte) on Mar 23, 2011 at 17:55 UTC
Re^3: changing date format in and out by Anonymous Monk on Feb 14, 2009 at 01:08 UTC
Abandon KSH	[reply]