Shell Programming and Scripting

Hi ,
i have a requirement in which i have to ftp files to unix from windows and vice versa.
I have to encrypt files in windows which will then be decrypted in unix and vice versa.
Now the process needs to be automated ..therefore when windows server or unix server recieves the files a shell script or a batch files should set off encrypting the file.
Could anybody help me out with this?i have heard of some polling mechanism..but have no idea

You don't have to do the polling in the script, just place the script in the crontab and cron will call it at regular intervals for you. (see "man cron" for details on how to do this.)

It is possible to get a list of files sorted by timestamp ("ls -rt" or "ls -t"), therefore the only thing you have to remember between runs of the script is the last file you have processed.

I hope this helps.

bakunin

Look at the tools like putty, puttygen, psftp on windows and ssh, scp, sftp on unix.

you can transfer the file from 'server a' to 'server b' and then 'server a' can remotely kick a script on 'server b' when the transfer completes. it will work in either direction. you could make one server both push and pull as well, rather than setting up redundant processes on both machines.

Obv. don't know all your requirements, but if possible, it makes more sense to encrypt before xfer, lest anyone intercept. The use of scp or sftp reduces this risk as conversation will be encrypted. Nonetheless...

Sry, I read the question wrong... deleted previous rubish :-)

However, I have a simuliar situation. I have a Windows batchfile that moves backup files to a certain share that is accessible via https. On my BSD box a cron runs to fetch/wget that file on a weekly base. Its quite easy.

Hi necron,
How do u check for new files?

I have a script on my BSD box that runs via crontab every 5 mins.
If you want I can paste the script here? It's a bash script.