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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
scp in perl5(unix)  most urgent

Posted by reyazan (reyazan), 11 June 2005
i want to copy files from to
my system ( .but only those files
which we have not copied previously.

we should use scp in perl

Posted by admin (Graham Ellis), 11 June 2005
Hello.   Can you describe the problems that you're having in trying to write this script - perhaps post up some code so that we can give you some specific advise?  Have a look at our Posting FAQ which gives you suggestions in how to make the best use of resources here.

You have marked your post "most urgent".  I see all questions posted here within 24 hours, and respond as soon as is practical for me.  I don't have infinite resources for this service so I tend to put more time into questions that follow the FAQ - that's far more efficient for all concerned.  Posting out of the blue something marked as urgent is something the FAQ explicity asks you not to do (it explains why), and it won't get better or quicker answers I'm afraid.

Posted by John_Moylan (jfp), 13 June 2005
You sound like your in need of 'rsync'
      rsync is a program that behaves in much the same way that rcp does, but
      has many more options and uses  the  rsync  remote-update  protocol  to
      greatly  speed  up  file  transfers  when  the destination file already

      The rsync remote-update protocol allows rsync to transfer just the dif-
      ferences between two sets of files across the network connection, using
      an efficient  checksum-search  algorithm  described  in  the  technical
      report that accompanies this package.

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