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Top Forums Shell Programming and Scripting Replace Date field in Unix File Post 302438534 by varunrbs on Tuesday 20th of July 2010 04:13:27 AM
Old 07-20-2010
File ouput and problem further explained

The file looks like this-
Code:
2010-04-29-00.00.00TSCN00000171585               *         **   ADDR
2010-04-27-00.00.00TSCN00000171585               *         **   ADDR
2010-04-25-00.00.00TSCN00000171585               *         **   ADDR
2010-04-21-00.00.00TSCN00000171585               *         **   ADDR
2010-04-11-00.00.00TSCN00000171585               *         **   ADDR

The First 19 characters are the date field.

My program has got 3 possible valid dates. In the above file I want that if the date is not in

2010-04-29-00.00.00
2010-04-28-00.00.00
2010-04-27-00.00.00

it should be replaced with

2010-04-29-00.00.00


So the last 3 dates (first 19 characters in file) should be changed to
2010-04-29-00.00.00

and file should look like this

Code:
2010-04-29-00.00.00TSCN00000171585               *         **   ADDR
2010-04-27-00.00.00TSCN00000171585               *         **   ADDR
2010-04-29-00.00.00TSCN00000171585               *         **   ADDR
2010-04-29-00.00.00TSCN00000171585               *         **   ADDR
2010-04-19-00.00.00TSCN00000171585               *         **   ADDR

 

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PX_DATE2STRING(3)														 PX_DATE2STRING(3)

px_date2string - Converts a date into a string.

SYNOPSIS
string px_date2string (resource $pxdoc, int $value, string $format) DESCRIPTION
Turns a date as it stored in the paradox file into human readable format. Paradox dates are the number of days since 1.1.0000. This func- tion is just for convenience. It can be easily replaced by some math and the calendar functions as demonstrated in the example below. PARAMETERS
o $pxdoc - Resource identifier of the paradox database as returned by px_new(3). o $value - Value as stored in paradox database field of type PX_FIELD_DATE. o $format - String format similar to the format used by date(3). The placeholders support by this function is a subset of those supported by date(3) (Y, y, m, n, d, j, L). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Turn a paradox date into a human readable form <?php $px = px_new(); /* make up a date as it could be stored in */ /* a date field of a paradox db. */ /* 700000 days since 1.1.0000. */ $days = 700000; /* Use the calendar functions to print a */ /* human readable format of the date */ echo jdtogregorian($days+1721425)." "; /* px_date2string() outputs the same */ echo px_date2string($px, $days, "n/d/Y")." "; px_delete($px); ?> The above example will output: 7/15/1917 7/15/1917 SEE ALSO
px_timestamp2string(3), jdtogregorian(3). PHP Documentation Group PX_DATE2STRING(3)
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