How do I make a timed script Post: 302368335

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Top Forums Shell Programming and Scripting How do I make a timed script Post 302368335 by amcrisan on Wednesday 4th of November 2009 04:12:00 PM

11-04-2009

Registered User

How do I make a timed script

Hello,

I would like to make a script, ideally in perl since I am most familair with it, that does the following:

automatically starts up at 9 pm, searches through a specified directory for any new files, finds those new files and starts to run them through a pipeline. I have most of it worked out, but here are somethings I am not sure how to do:

1) How do I make it start automatically at 9pm? I could put it sleep and tell it to wait for 9pm, but the truth is that sometimes, when a lot of new data comes, it realistically can take 24 hours or more to run an initial instance of script. I feel it might get confused if I just band-aid it with a sleep command, however if that's the only solution then that's what I will have to do.

2) How do I get time stamps for the files in the directory?

Ideally I don't want to use to too many non-standard modules, because it can make it less portable since other users will also have to download all those modules to use my little scripts (assuming it works out, other people here would like to use it...).

Thanks!

amcrisan

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LEARN ABOUT LINUX

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
       directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script,  service  passes  COMMAND and OPTIONS it to the init script unmodified.  All scripts should support at least the start and
       stop commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the  start
       command.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)

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