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Full Discussion: File search variables
Top Forums Shell Programming and Scripting File search variables Post 302152486 by summer_cherry on Thursday 20th of December 2007 01:16:18 AM
Old 12-20-2007
sort

Hi,
This one is a little difficult. But should work for you.

1> find . -name Daily_Generated_File_\*
---> find all the related file in current directory
2> sed 's/\(Daily_Generated_File_\)\([0-9][0-9]\)\(-[0-9][0-9]-\)\([0-9][0-9]\)\(.txt\)/\1\4\3\2\5/'
---> since the file is in MM-DD-YY format, change it to YY-MM-DD format
3> sort -t -
---> sort the result with '-' as delimite
4> tail -1
---> get the last one which is the latest according to the date
5> sed 's/\(Daily_Generated_File_\)\([0-9][0-9]\)\(-[0-9][0-9]-\)\([0-9][0-9]\)\(.txt\)/\1\4\3\2\5/'
---> change from 'YY-MM-DD' back to 'MM-DD-YY'

code:
Code:
find . -name Daily_Generated_File_\* |sed 's/\(Daily_Generated_File_\)\([0-9][0-9]\)\(-[0-9][0-9]-\)\([0-9][0-9]\)\(.txt\)/\1\4\3\2\5/' |sort -t - | tail -1 |sed 's/\(Daily_Generated_File_\)\([0-9][0-9]\)\(-[0-9][0-9]-\)\([0-9][0-9]\)\(.txt\)/\1\4\3\2\5/'

 

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FPRINTF(3)								 1								FPRINTF(3)

fprintf - Write a formatted string to a stream

SYNOPSIS
int fprintf (resource $handle, string $format, [mixed $args], [mixed $...]) DESCRIPTION
Write a string produced according to $format to the stream resource specified by $handle. PARAMETERS
o $handle -A file system pointer resource that is typically created using fopen(3). o $format - See sprintf(3) for a description of $format. o $args - o $... - RETURN VALUES
Returns the length of the string written. EXAMPLES
Example #1 fprintf(3): zero-padded integers <?php if (!($fp = fopen('date.txt', 'w'))) { return; } fprintf($fp, "%04d-%02d-%02d", $year, $month, $day); // will write the formatted ISO date to date.txt ?> Example #2 fprintf(3): formatting currency <?php if (!($fp = fopen('currency.txt', 'w'))) { return; } $money1 = 68.75; $money2 = 54.35; $money = $money1 + $money2; // echo $money will output "123.1"; $len = fprintf($fp, '%01.2f', $money); // will write "123.10" to currency.txt echo "wrote $len bytes to currency.txt"; // use the return value of fprintf to determine how many bytes we wrote ?> SEE ALSO
printf(3), sprintf(3), sscanf(3), fscanf(3), vsprintf(3), number_format(3). PHP Documentation Group FPRINTF(3)
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