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Top Forums Shell Programming and Scripting How to pattern match on digits and then increment? Post 80770 by sdutto01 on Thursday 11th of August 2005 11:59:47 AM
Old 08-11-2005
How to pattern match on digits and then increment?

I have a log file that ends in a ".xxx" where xxx are digits but I don't necessarily know what digits they are. The log file rotates automatically and is auto-incrementing - starting at .001.

So the example would be:

file-name.005

If the file ends in .005 and the log rotates, it logically rotates to "file-name.006". But, not knowing the original number it could be auto-incrementing to any number.
So I am hoping someone can tell me what tools to use and how to 'know' that the log file ends in 005 and from this pattern, know that the next log file must end in 006 (vs. just the digit 6).

Thanks in advance!
 

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

NAME
scanlogs - summarize INN log files. SYNOPSIS
scanlogs [ norotate ] [ nonn ] DESCRIPTION
Scanlogs summarizes the information recorded in the INN log files (see newslog(5)). By default, it also rotates and cleans out the logs. It is normally invoked by the news.daily(8) script. KEYWORDS
The following keywords are accepted: norotate Using this keyword disables the rotating and cleaning aspect of the log processing: the logs files are only scanned for information and no contents are altered. nonn Normally the nn log file is scanned and rotated. Using this keyword disables this function. If scanlogs is invoked more than once a day, the ``norotate'' keyword should be used to prevent premature log cleaning. HISTORY
Written by Landon Curt Noll <chongo@toad.com> and Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.1, dated 1996/10/29. SEE ALSO
innd(8) newslog(5), news.daily(8), nnrpd(8). SCANLOGS(8)
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