I'm not sure what you want to get out of this.

You show a printf format string of "%06d\n", but all of the data you show in your examples show a zero-filled four decimal digit string; not six decimal digits. Do you want four digits or six digits?

The last printf format that you show:

Code:

printf("%-40s%2s%-80s%2s%4s\n",FILENAME,"  ",$0,"  ",n-1)

does not match the output you say you want to see:

Code:

0001 - name_date_0001_ID0.log    “2nd line after the pattern is found” “number of “%” signs”

because the leading four decimal digit sequence and the following " - " are not in the printf format string. Do you want the output to match the format string you gave, or do you want the output to match the example shown?

You code has an underlying assumption that the pattern you're looking for will appear on the same line in every file. (The assumption is hidden by the fact that the array c is not cleared when you start reading a new file.) Do you always want to display a specific line number in each file, or do you want to display the 2nd line after a line that matches a given pattern?

If the pattern appears more than one line in a file, do you want the second line after each match and the count of %s on that line to be printed for each match, or only for the first match in each file?

Will you guarantee that each filename matched by *.log contains exactly three underscore characters? Is the error message that you want to be printed supposed to be a check that the characters between the 3rd underscore and the .log at the end of the filename is ID followed by a single decimal digit, or is it intended to verify that there are exactly three underscores, exactly four (or six) decimal digits between the 2nd and 3rd underscore and ID followed by a single decimal digit followed by .log after the 3rd underscore?

Please give us a sample of the start of the content of one of your log files (in CODE tags) and show us the pattern you want to match.