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Top Forums UNIX for Dummies Questions & Answers how to execute a while loop for 20 minutes? Post 302125370 by ennstate on Thursday 5th of July 2007 02:54:29 AM
Old 07-05-2007
Quote:
Originally Posted by subhotech
It works if u r sure that 1 complete execution of the loop takes exactly 1 second. if the no. of statement is more then it may take more than a second to execute the loop once.

It doesnot depend on the number of statements that are executed in the while loop.But it depends on the number of SECONDS spend since the shell invocation.

man ksh says,
Quote:
SECONDS
Each time this variable is referenced, the number of seconds since shell invocation is returned. If this variable is assigned a value, then the value returned upon reference will be the value that was assigned plus the number of seconds since the assignment.
Thanks
Nagarajan G
 

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sttime(3)                                                   ShapeTools Toolkit Library                                                   sttime(3)

NAME
stMktime, stWriteTime - date and time handling SYNOPSIS
#include <config.h> #include <sttk.h.h> time_tstMktime (char *string); char*stWriteTime (time_t date); DESCRIPTION
stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is a list of all valid formats, optional parts in brackets. [Tue] Jan 5[,] [19]93 This includes the standard asctime(3) format. Jan 5 With no year given, the year defaults to the current year. [19]93/01/05 This notation requires month and day represented by exactly two digits. 5.1.[19]93 This is the usual German notation. 5.1. German notation referencing the current year. A certain time, given together with the date must always have the following form. hours:minutes[:seconds] Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values below 10 may be written as one digit numbers. The time value may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white- space may be given between a field of the time value and the separating colon. The time is always considered to be local time. stWriteTime generates a time string similar to asctime(3) from its date argument. SEE ALSO
asctime(3) BUGS
Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure. sttk-1.7 Thu Jun 24 17:43:35 1993 sttime(3)
All times are GMT -4. The time now is 02:48 PM.
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