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Full Discussion: find formatted filename with date time
Top Forums UNIX for Advanced & Expert Users find formatted filename with date time Post 302160356 by dpath2o on Monday 21st of January 2008 06:39:26 PM
Old 01-21-2008
find formatted filename with date time
Hi,

I operate and use HF radars along the California coast for ocean surface currents. The devices use Mac OS as the control and logging software. The software generates thousands of files a week and while I've used PERL in the past to solve the problems of finding files I come to realize some inherent inefficiencies with this type of search method. Ultimately I'd like to find files using the unix find command, however, my knowledge of regular expressions is in its infancy and I'm learning. So in my pursuit of this knowledge I'm turning to this forum to hopefully give me some hints.

The files fortunately are all fairly standardize -- i.e. the filename format is:

TYPE_SITE_[YY|YYYY]_MO_MD_[HHMM|HHMMSS].[xx|xxx]

where,
TYPE is a three or four character string depicting the type of data (CSS, CSQ, RDLi, STAT, etc.)
SITE is a four character string depicting the name of the radar site (GCYN, NPGS, BML1, etc.)
YYYY is a two or four digit year
MO is a two digit month
MD is a two digit month day
HH is a two digit hour
MM is a two digit minute
SS is a two digit second
xxx is a two or three character string for a file extension

The main difficulty I have is in crossing years -- i.e. if I wanted to say find CSS files for site BML1 between Dec 29th 2007 and Jan. 2nd 2008. Any advice / pointers on how to attack this using the find or grep or egrep commands would be greatly appreciated.

Thanks,
dpath2o
 

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LEARN ABOUT OSX

vfs_shadow_copy

VFS_SHADOW_COPY(8)														VFS_SHADOW_COPY(8)

NAME

       vfs_shadow_copy - Make a Samba share read only for a specified time period

SYNOPSIS

       vfs objects = shadow_copy

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       The vfs_shadow_copy VFS module functionality that is similar to Microsoft Shadow Copy services. When setup properly, this module allows Mi-
       crosoft Shadow Copy clients to browse "shadow copies" on Samba shares.

       This module is stackable.

CONFIGURATION

       vfs_shadow_copy relies on a filesystem snapshot implementation. Many common filesystems have native support for this.

       Filesystem snapshots must be mounted on specially named directories in order to be recognized by vfs_shadow_copy. The snapshot mount points
       must be immediate children of a the directory being shared.

       The snapshot naming convention is @GMT-YYYY.MM.DD-hh.mm.ss, where:

       o  YYYY is the 4 digit year

       o  MM is the 2 digit month

       o  DD is the 2 digit day

       o  hh is the 2 digit hour

       o  mm is the 2 digit minute

       o  ss is the 2 digit second.

       The vfs_shadow_copy snapshot naming convention can be produced with the following date(1) command:

	    TZ=GMT date +@GMT-%Y.%m.%d-%H.%M.%S

EXAMPLES

       Add shadow copy support to user home directories:

	       [homes]
	    vfs objects = shadow_copy

CAVEATS

       This is not a backup, archival, or version control solution.

       With  Samba  or	Windows  servers,  vfs_shadow_copy is designed to be an end-user tool only. It does not replace or enhance your backup and
       archival solutions and should in no way be considered as such. Additionally, if you need version control, implement a version control  sys-
       tem.

VERSION

       This man page is correct for version 3.0.25 of the Samba suite.

AUTHOR

       The  original  Samba  software  and  related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

																VFS_SHADOW_COPY(8)
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