Determine the number of records in a file

I want to analyse record types from a large input file and so far have managed to extract different groups and created the relevant files. All I want to do now is count the number of records in each file so I can produce a report showing the different types but cannot figure out how to do this, I know it will be simple but I cannot get any command to accomplish this, help please!

in applescript, there are a few ways to count patterned text.  if (as jeffrey suggests) each record is a separate line, then you can use the following:
set textContents to read "/path/to/file.txt"
count of paragraphs of textContents
if records are determined by some other process (such as a special delimiting character or phrase) you can use text items (replace the @ sign with the special character or phrase):
set textContents to read "/path/to/file.txt"
set {oldTID, my text item delimiters} to {my text item delimiters, "@"}
set theCount to count of text items of textContents
set my text item delimiters to oldTID

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    set_item_property('dept.dname',visible,property_false);
    set_item_property('dept.loc',visible,property_false);
    Regards,
    Monica

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