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Top Forums Shell Programming and Scripting Need Help on date subtraction Post 302732513 by complex.invoke on Sunday 18th of November 2012 07:14:03 AM
Old 11-18-2012
or Gnu sed/awk
Code:
[root@node3 ~]# cat get_date 
sed -r 's!(....)(..)(..)(..)(..)(..)!echo -n "& ";date -d "\1-\2\-\3 \4:\5:\6" +%s!eg' ${1} | \
awk 'NR!=1{printf("%s %s %02d:%02d:%02d", p,$1,($2-q)/3600,($2-q)%3600/60,($2-q)%3600%60);printf("\n")}{p=$1;q=$2}'
[root@node3 ~]# bash get_date infile 
20121029135649 20121029135721 00:00:32
20121029135721 20121030091540 19:18:19
20121030091540 20121030093420 00:18:40
20121030093420 20121030094340 00:09:20
20121030094340 20121030095427 00:10:47
20121030095427 20121030095856 00:04:29
20121030095856 20121030100104 00:02:08
20121030100104 20121030100251 00:01:47

 

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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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