Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

Re^3: Check multiple file names exist in directory and create another trigger file after existing files processed

by SuicideJunkie (Vicar)
on Nov 21, 2017 at 23:02 UTC ( #1203965=note: print w/replies, xml ) Need Help??


in reply to Re^2: Check multiple file names exist in directory and create another trigger file after existing files processed
in thread Check multiple file names exist in directory and create another trigger file after existing files processed

What I've done that covers many of my use cases, is:

  1. Watch & wait for the first type of file to appear.
  2. Sleep for a few seconds to a few minutes depending on the task
  3. Proceed to verify the other matching files exist, and carry on with the task, else loop back to 1

Sometimes the verification is a check to see if the file has grown larger; if so, then it goes back to sleep repeatedly until the download/copy is finished.

For checking the names, you may want to use a regex to capture the relevant part of the filename, and then look for specifically named files using that.

For example,

if ($file =~ /alphat_(.*)\.zip) { my $key = $1; # whatever was between alphat_ and the .zip bits. if (-f "numerict_${key}.zip && -f "updatet_${key}.zip") { print "Caught 'em all!\n"; } }

  • Comment on Re^3: Check multiple file names exist in directory and create another trigger file after existing files processed
  • Download Code

Replies are listed 'Best First'.
Re^4: Check multiple file names exist in directory and create another trigger file after existing files processed
by vickycanada (Novice) on Nov 22, 2017 at 17:16 UTC
    Hi, Thank you for the advise. I did make some changes and posted an update. Could you please take a look as well. Appreciate your help!

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1203965]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (5)
As of 2021-03-01 09:20 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?