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Top Forums Shell Programming and Scripting Merge different files into the original file Post 302881852 by rbatte1 on Thursday 2nd of January 2014 09:20:14 AM
Old 01-02-2014
Is there a suitable date/time as part of the data? If it is YYYYMMDDHHMMSS format, then you can:-
Code:
sort -n A[1-3].txt>A0.txt && mv A0.txt A2.txt

Of course, if you repeat this, you will start getting duplicate data in A2.txt unless A1.txt & A3.txt are cleared down.

Of course, you need to be sure that no new data is being written to them between when you read them and when you clear them. Perhaps this would help, but add some error checking:-
Code:
mv A1.txt A1T.txt
mv A2.txt A2T.txt
mv A3.txt A3T.txt

sort -n A[1-3]T.txt > A2.txt
rm A[1-3]T.txt



Robin
 

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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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