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detecting consecutive filenames

 
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Old 11-10-2009
detecting consecutive filenames
I have a series of filenames of the format junk_x_###.txt where x and ### are numbers. I need to detect when at least 30 consecutive files (e.g. junk_1_001.txt, junk_1_002.txt.....) are in the directory. There are sets of files with similar names that need to be grouped together and counted separately (e.g. junk_2_001.txt..., junk_3_001.txt....) and whichever cluster has more than 30 selected. I also need to allow for the consecutive filenames not beginning at 001 (e.g. junk_1_100.txt, junk_1_101.txt.....).

In essence I need to identify 30 consecutive files with identical filenames as far as junk_x_
What is the best strategy to take here? I'm trying to cluster the root of each filename, list them and then pipe to wc -l to count them but not getting the initial clustering to work well. Any suggestions for this step?
thanks
 
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LEARN ABOUT CENTOS

binfmt.d

BINFMT.D(5)							     binfmt.d							       BINFMT.D(5)

NAME

       binfmt.d - Configure additional binary formats for executables at boot

SYNOPSIS

       /etc/binfmt.d/*.conf

       /run/binfmt.d/*.conf

       /usr/lib/binfmt.d/*.conf

DESCRIPTION

       At boot, systemd-binfmt.service(8) reads configuration files from the above directories to register in the kernel additional binary formats
       for executables.

CONFIGURATION FORMAT

       Each file contains a list of binfmt_misc kernel binary format rules. Consult binfmt_misc.txt[1] for more information on registration of
       additional binary formats and how to write rules.

       Empty lines and lines beginning with ; and # are ignored. Note that this means you may not use ; and # as delimiter in binary format rules.

       Each configuration file shall be named in the style of program.conf. Files in /etc/ override files with the same name in /usr/lib/ and
       /run/. Files in /run/ override files with the same name in /usr/lib/. Packages should install their configuration files in /usr/lib/, files
       in /etc/ are reserved for the local administrator, who may use this logic to override the configuration files installed from vendor
       packages. All files are sorted by their filename in lexicographic order, regardless of which of the directories they reside in. If multiple
       files specify the same binary type name, the entry in the file with the lexicographically latest name will be applied.

       If the administrator wants to disable a configuration file supplied by the vendor, the recommended way is to place a symlink to /dev/null
       in /etc/binfmt.d/ bearing the same filename.

EXAMPLE

       Example 1. /etc/binfmt.d/wine.conf example:

	   # Start WINE on Windows executables
	   :DOSWin:M::MZ::/usr/bin/wine:

SEE ALSO

       systemd(1), systemd-binfmt.service(8), systemd-delta(1), wine(8)

NOTES

	1. binfmt_misc.txt
	   https://www.kernel.org/doc/Documentation/binfmt_misc.txt

systemd 208															       BINFMT.D(5)