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Full Discussion: Selecting the middle date!
Top Forums UNIX for Dummies Questions & Answers Selecting the middle date! Post 45650 by google on Sunday 28th of December 2003 05:52:19 PM
Old 12-28-2003
What system are you running? What shell? Also, can you elaborate just a bit more as to how the data looks? Is this date line in every record, or just a header or trailer record of a file? Does the example line you posted represent a complete line?

You can skin this cat in several ways. This assumes the date line is in every record within a file. Here is one:

Code:
FILE_DATE=$(cut -c 9-15 data_file | head -1)
TODAYS_DATE=$(date +'%d%m%Y')

if [ ${FILE_DATE} != ${TODAYS_DATE} ]
 then
   echo "Dates Dont Match"
fi

 

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LEARN ABOUT CENTOS

tartdates

tartdates(5)						      LinuxTaRT Special Dates						      tartdates(5)

NAME

       tartdates - Special date configuration for LinuxTaRT

DESCRIPTION

       LinuxTaRT uses a configuration file called specialdates to enable the user to display a specific tagline on certain special dates. The name
       and location of this file is specified in the LinuxTaRT configuration file ~/.tartrc, but is usually:

       ~/.tartdates

PARAMETERS

       Each line of the special date file consists of a day of the year expressed as a two digit month, a forward-slash (/), a two digit  date,  a
       colon (:) and a line of text.

       mm/dd:tagline text

       Any line that does not conform to this specification will be treated as a comment.  Comments may also be specified by prefixing text with a
       # symbol. Using this method, you can place a comment behind a date line.

EXAMPLES

       01/01:Happy New Year!!

       Will use "Happy New Year!!" as the tagline when the date is January 1st.

       12/25:Merry Christmas to all!

       Displays "Merry Christmas to all!" as your tagline on Christmas day.

FILES

       ~/.tartdates

SEE ALSO

       tart(1) tartrc(5) tart-custom(5)

Mark Veinot							       1.0.0							      tartdates(5)
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