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Full Discussion: Globbing slash Wildcarding Question
Top Forums Shell Programming and Scripting Globbing slash Wildcarding Question Post 302105463 by Glenn Arndt on Thursday 1st of February 2007 11:10:01 PM
Old 02-02-2007
MySQL
I don't disagree with anything you have said, however...
Quote:
Originally Posted by sb008
Based on the fact that was stated that the format of the files is:
filename<date>.dat
the regular expression would be strict enough, since it's fair to assume that whatever program produces these output files produces them with a valid date in the file name.
If you're going to assume that whatever program produces these output files produces them with a valid date in the file name, 1) you've made your regular expression unnecessarily strict; that is, you could have just as easily used filename[0-9][0-9][0-9][0-9][0-9][0-9].dat (although less reasonable, it's certainly easier to type), and 2) you're assuming the original poster's request is irrelevant, since his requirement was to "match the filenames like so, ls filename[01-12][01-31][00-99].dat thus guaranteeing [his] date format".
Quote:
Originally Posted by sb008
If other files are around with a similar format, your regular expression, even though it's more strict, would be as useless as mine. Unless ofcourse you promote the filosophy that a statement is better if it has a smaller chance on producing errors.
In most cases here on unix.com, I do promote that philosophy.
Quote:
Originally Posted by sb008
The only valid option, if files with similar patterns are around, is to isolate the date part from the filename and use e.g. a date conversion command/tool on that pattern and test for the return code.
I agree, and that is something I have considered. However, I don't know of one offhand, and although I could write one, unless you can suggest an existing one to me, I can not offer it.
 

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LEARN ABOUT HPUX

unknown

UNKNOWN(1)						      General Commands Manual							UNKNOWN(1)

NAME

       unknown - identify possible genotypes for unknowns

SYNOPSIS

       A program to rapidly identify which genotypes are possible for individuals typed as unknowns in the input pedigree.

       unknown [ -cl ]

DESCRIPTION

       unknown infers possible genotypes and mating combinations for parents with unknown genotypes for ilink(1), mlink(1) and linkmap(1).

OPTIONS

       -c     Use conditional allele frequencies.

       -l     Choose a good set of loop breakers automatically.

RETURN VALUE

       0     Successful completion

ERRORS

       10    File not found
       255   Failure

EXAMPLES

       Normally, unknown(1) is run immediately prior to its sister programs, ilink(1), mlink(1) and linkmap(1), like this:

       unknown
       mlink

FILES

       unknown(1) reads the two files pedfile.dat and datafile.dat as its own input and produces various temporary files that are used as input to
       the next program. These temporary files are ipedfile.dat, upedfile.dat, speedfile.dat and newspeedfile.dat.

NOTES

       unknown(1) is part of the FASTLINK package, which is a re-implementation of the LINKAGE suite  of  computer  tools  that  help  investigate
       genetic linkage as first proposed G.M. Lathrop, J.M. Lalouel, C. Julier, and J. Ott.

AUTHORS

       Dylan Cooper, Alejandro Schaffer, and Tony Schurtz based on work originally by Jurg Ott, Ph.D, et. al.

       This manual page was written by Elizabeth Barham <lizzy@soggytrousers.net> for the Debian GNU/Linux system (but may be used by others).

WORD-WIDE-WEB
       http://www.ncbi.nlm.nih.gov/CBBResearch/Schaffer/fastlink.html

SEE ALSO

       ilink(1), linkmap(1), lodscore(1), mlink(1).

								  April 15, 2003							UNKNOWN(1)
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