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Full Discussion: Converting seconds to time
Top Forums Shell Programming and Scripting Converting seconds to time Post 303013560 by RudiC on Friday 23rd of February 2018 07:46:25 AM
Old 02-23-2018
Why not
Code:
printf "%02d:%02d:%02d\n" $((25793 / 3600)) $((25793 % 3600 / 60 )) $((25793 % 3600 % 60))
07:09:53

Please be aware that bashcan do integer calculations only! If you need fractions of seconds, try
Code:
printf "%02d:%02d:%02d%s\n" $((${ftm%.*} / 3600)) $((${ftm%.*} % 3600 / 60 )) $((${ftm%.*} % 3600 % 60)) ${ftm#${ftm%.*}}
07:09:53.5


Last edited by RudiC; 02-23-2018 at 08:58 AM..
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TIME(2) 						     Linux Programmer's Manual							   TIME(2)

NAME
time - get time in seconds SYNOPSIS
#include <time.h> time_t time(time_t *t); DESCRIPTION
time() returns the time as the number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). If t is non-NULL, the return value is also stored in the memory pointed to by t. RETURN VALUE
On success, the value of time in seconds since the Epoch is returned. On error, ((time_t) -1) is returned, and errno is set appropriately. ERRORS
EFAULT t points outside your accessible address space. CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001. POSIX does not specify any error conditions. NOTES
POSIX.1 defines seconds since the Epoch as a value to be interpreted as the number of seconds between a specified time and the Epoch, according to a formula for conversion from UTC equivalent to conversion on the naive basis that leap seconds are ignored and all years divisible by 4 are leap years. This value is not the same as the actual number of seconds between the time and the Epoch, because of leap seconds and because clocks are not required to be synchronized to a standard reference. The intention is that the interpretation of sec- onds since the Epoch values be consistent; see POSIX.1 Annex B 2.2.2 for further rationale. SEE ALSO
date(1), gettimeofday(2), ctime(3), ftime(3), time(7) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2010-02-25 TIME(2)
All times are GMT -4. The time now is 05:54 PM.
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