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Top Forums UNIX for Dummies Questions & Answers crontab every 2 minutes, 24 hours and once a week Post 302117945 by Shell_Life on Thursday 17th of May 2007 09:57:32 AM
Old 05-17-2007
Ok, assuming this is not a homework, here is the format of "crontab":
Code:
minute  hour  day_of_month  month  day_of_week  <command>

Specifying "*" means every occurence.
You can separate multiple values by comma, example:
if you enter: 1,3,5 in the "hour" parameter, it means you want your
job to run at 1:00, 3:00 and 5:00 o'clock.
You can also enter ranges using "-" (dash) in between numbers:
7-12 means all acceptable values between 7 and 12, including both.

Last edited by Shell_Life; 05-17-2007 at 11:04 AM..
 

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PX_TIMESTAMP2STRING(3)					     Library Functions Manual					    PX_TIMESTAMP2STRING(3)

NAME
PX_timestamp2string -- Convert paradox timestamp into formated string SYNOPSIS
#include <paradox.h> char * PX_timestamp2string(pxdoc_t *pxdoc, double timestamp, const char *format) DESCRIPTION
Creates a string representation of a paradox timestamp as specified in the parameter format. The timestamp must be either retrieved with PX_get_data_double(3) after calling PX_get_record(3) or by simply using the double value in the pxval_t struct as returned by PX_retrieve_record(3). A timestamp contains both time and date information. The format string contains chars which stand for certain values of the date/time. The following table lists all available characters with a meaning. All other characters are being copied unmodified to the output string. If a special character shall not be interpreted it must be preceded with a backslash. Characters and their meaning in date/time format string Character Meaning Y year, numeric, 4 digits y year, numeric, 2 digits m month, numeric n month, numeric, no leading zeroes d day of the month, numeric j T{ day of the month, numeric, no leading zeros T} H hour, numeric, 24 hour format h hour, numeric, 12 hour format G T{ hour, numeric, 24 hour format, no leading zeroes T} g T{ hour, numeric, 12 hour format, no leading zeroes T} i minutes, numeric s seconds, numeric A AM/PM a am/pm L boolean for leap year RETURN VALUE
Returns pointer to string on success and NULL on failure. SEE ALSO
PX_time2string(3), PX_date2string(3) AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx. PX_TIMESTAMP2STRING(3)
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