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Full Discussion: Converting date +%j into integer
Top Forums Shell Programming and Scripting Converting date +%j into integer Post 302883021 by Corona688 on Friday 10th of January 2014 12:16:37 PM
Old 01-10-2014
This is not a bug -- the leading 0 causes the shell to think the number is octal. 010 would be 8 in octal.

You can do string operations to strip off leading 0's, but I tend to take the easy way, slapping a '1' on the front to make it look decimal. Subtract 1000 as part of your math operations.
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LEARN ABOUT HPUX

strtoumax

strtoimax(3C)															     strtoimax(3C)

NAME

       strtoimax(), strtoumax() - convert string to integer

SYNOPSIS

DESCRIPTION

       or  converts  the  character  string pointed to by str to or representation, respectively.  The string is scanned up to the first character
       inconsistent with the base.  Leading ``white-space'' characters (as defined by in ctype(3C)) are ignored.  If no conversion can take place,
       zero is returned.

       If base is greater than or equal to 2 and less than or equal to 36, it is used as the base for conversion.  After an optional leading sign,
       leading zeros are ignored, and or is ignored if base is 16.

       If base is zero, the string itself determines the base as follows: after an optional leading sign, a leading zero indicates  octal  conver-
       sion; a leading or indicates hexadecimal conversion.  Otherwise, decimal conversion is used.

       If  the	value  of ptr is not a pointer to the character terminating the scan is returned in the location pointed to by ptr.  If no integer
       can be formed, the location pointed to by ptr is set to str, and zero is returned.

RETURN VALUE

       Upon successful completion, all functions return the converted value, if any.

       If the correct value would cause overflow:

	      returns		or (according to the sign of the value), and sets to

	      returns		and sets to

       For all other errors, zero is returned and is set to indicate the error.

ERRORS

       and fail and is set, if any of the following conditions are encountered:

	      The value of   base is not supported.

	      The value to be returned would have caused overflow.

AUTHOR

       and were developed by HP.

SEE ALSO

       ctype(3C), strtod(3C), strtol(3C), scanf(3S), thread_safety(5).

STANDARDS CONFORMANCE

																     strtoimax(3C)
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