#6744: [with patch, positive review] install script stores start time of build
-------------------------------+--------------------------------------------
Reporter: schilly | Owner: tbd
Type: enhancement | Status: closed
Priority: trivial | Milestone: sage-4.1.2
Component: distribution | Resolution: fixed
Keywords: | Author: Harald Schilly
Upstream: N/A | Reviewer: Tim Dumol
Merged: Sage 4.1.2.alpha0 | Work_issues:
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Changes (by drkirkby):
* upstream: => N/A
Comment:
Although this is marked as fixed, it should be noted that it makes use of
a non-portable option to the {{{date}}} command so fails on some systems.
See
http://www.opengroup.org/onlinepubs/009695399/utilities/date.html
for a list of portable options.
Since the file created is not actually used by anything it's not a big
problem, but if anyone tried using it on a Unix system, it would likely
fail. A better method is:
{{{
# Compute seconds since the Epoch.
# Call 'date'. Note that
# %Y = year including century
# %j = day number (1-365)
# %H = hour (0-23)
# %M = minute (0-59)
# %S = seconds (0-59)
if type env >/dev/null 2>&1 ; then
set -- `env LC_ALL=C LC_TIME=C LANG=C date -u '+%Y %j %H %M %S'`
else
set -- `date -u '+%Y %j %H %M %S'`
fi
# $1 = year including century
# $2 = day number (1-365)
# $3 = hour (0-23)
# $4 = minute (0-59)
# $5 = seconds (0-59)
if [ $? -ne 0 ] || [ $# -lt 5 ] ; then
TIME="Error computing seconds since the Epoch"
fi
DAYS=`expr 365 \* \( $1 - 1970 \) + \( $1 - 1969 \) / 4 + $2 - 1`
TIME=`expr $5 + 60 \* \( $4 + 60 \* \( $3 + 24 \* $DAYS \) \)`
echo $TIME
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6744#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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