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Top Forums Shell Programming and Scripting Compare Last Modified Time across Time Zone Post 302286324 by python on Tuesday 10th of February 2009 09:54:07 PM
Old 02-10-2009
Compare Last Modified Time across Time Zone

Hi,

I'm new to shell script programming, I only have Java programming background.

I'm writing a shell script to do file synchronization between 2 machines that located at different time zone area. Both machine were set its time zone according to its geographical location (Eg: server is at GMT, and client is at GMT+5). I need to do file synchronization between this 2 machines, taking the latest updated file from server, and scp it to client.

The problem I face is both machines are in different time zone, so that the last modified time doesnt not reflect the actual different.
Eg: for file /tmp/test.txt in both machines
Server: last modified time is Jan 01, 2009 02:00:00 (at GMT 0)
Client: last modified time is Jan 01, 2009 06:00:00 (at GMT +5)
From the surface, it looks like the file in Client is the latest. But when you consider it with time zone, you will find that the file in Server is the latest version.
After manually fine tuned both file with GMT0:
Server: last modified time is Jan 01, 2009 02:00:00 (at GMT 0)
Client: last modified time is Jan 01, 2009 01:00:00 (at GMT 0)

So, anyone help me to solve this issue?

Thank you!
 

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shell(1F)							   FMLI Commands							 shell(1F)

NAME
shell - run a command using shell SYNOPSIS
shell command [command] ... DESCRIPTION
The shell function concatenate its arguments, separating each by a space, and passes this string to the shell ($SHELL if set, otherwise /usr/bin/sh). EXAMPLES
Example 1: A sample output of shell command. Since the Form and Menu Language does not directly support background processing, the shell function can be used instead. `shell "build prog > /dev/null &"` If you want the user to continue to be able to interact with the application while the background job is running, the output of an exe- cutable run by shell in the background must be redirected: to a file if you want to save the output, or to /dev/null if you don't want to save it (or if there is no output), otherwise your application may appear to be hung until the background job finishes processing. shell can also be used to execute a command that has the same name as an FMLI built-in function. NOTES
The arguments to shell will be concatenate using spaces, which may or may not do what is expected. The variables set in local environments will not be expanded by the shell because "local" means "local to the current process." ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), attributes(5) SunOS 5.10 5 Jul 1990 shell(1F)
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