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Full Discussion: Running external script
Top Forums Shell Programming and Scripting Running external script Post 302339934 by cfajohnson on Friday 31st of July 2009 10:17:56 PM
Old 07-31-2009
Quote:
Originally Posted by raghunsi
Code:
while [ true ]


That works, but probably not for the reason you think it does. It is true because 'true' is a non-empty string; it doesn't run the command 'true'. For that, use:

Code:
while true
do

Quote:
Code:
do
hour=`date +%H`
minute=`date +%M`
second=`date +%S`


Not only is three calls to date inefficient, but it will give you the wrong results if a time boundary is passed between calls.

Use eval and a single date command:

Code:
eval "$( date "+hour=%H minute=%M second=%S")"

 

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DATE_PARSE_FROM_FORMAT(3)						 1						 DATE_PARSE_FROM_FORMAT(3)

date_parse_from_format - Get info about given date formatted according to the specified format

SYNOPSIS
array date_parse_from_format (string $format, string $date) DESCRIPTION
Returns associative array with detailed info about given date. PARAMETERS
o $format - Format accepted by DateTime.createFromFormat(3). o $date - String representing the date. RETURN VALUES
Returns associative array with detailed info about given date. EXAMPLES
Example #1 date_parse_from_format(3) example <?php $date = "6.1.2009 13:00+01:00"; print_r(date_parse_from_format("j.n.Y H:iP", $date)); ?> The above example will output: Array ( [year] => 2009 [month] => 1 [day] => 6 [hour] => 13 [minute] => 0 [second] => 0 [fraction] => [warning_count] => 0 [warnings] => Array ( ) [error_count] => 0 [errors] => Array ( ) [is_localtime] => 1 [zone_type] => 1 [zone] => -60 [is_dst] => ) SEE ALSO
DateTime.createFromFormat(3), checkdate(3). PHP Documentation Group DATE_PARSE_FROM_FORMAT(3)
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