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help with expr command in script

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# 8  
Old 03-01-2010
Hi All,
Thanks for so many suggestions.
Removing echo, does not work as it still gives syntax error.

Removing the leading zero also does not work. This gives an error as *60 not found. Since * is used as wild card.

I am using ksh, so I guess date -d won't work in ksh.
If i use the printf command, the date is not calculated. The error is thrown as
The output is like below.
1-Mar-10 03:56:51
START_TIME=()T
END_TIME=()T
()T-()T: syntax error

I tried using it this way.
Code:
function get_elapsed_time
{
export PROPS_FILE=/apps/taskman/scripts/dailyreports/temp_file.properties
export CURRENT_TIME=`date '+%e-%h-%y %T'`
export PREVIOUS_TIME=`grep ABC $REPORT_PROPS_FILE |cut -d= -f2`
echo $PREVIOUS_TIME
START_TIME=$(printf '%(%s)T' "$PREVIOUS_TIME")
echo $START_TIME
END_TIME=$(printf '%(%s)T' "$CURRENT_TIME")
echo $END_TIME
DIFF=$(($END_TIME-$START_TIME))
echo $DIFF
SECS=$(($DIFF % 60))
echo $SECS
MINS=$(($DIFF % (60 * 60) / 60 ))
echo $MINS
}

Its still not working. Smilie Is there some other way to use printf command in unix?

---------- Post updated 1st Mar 2010 at 12:09 AM ---------- Previous update was 28th Feb 2010 at 11:42 PM ----------

I think the version is ksh88. I tried to print the SECONDS variable and its an integer value. So it should be a ksh88 rt?

---------- Post updated at 12:16 AM ---------- Previous update was at 12:09 AM ----------

Hi All,

Its working now!! Smilie

I am using the same original code and just modified the export command. Yes, removing echo does help.

Code:
function get_elapsed_time
{
export PROPS_FILE=temp.properties
export CURRENT_TIME=`date '+%T'`
export PREVIOUS_TIME=`grep ABC $PROPS_FILE |cut -c15-22`
echo $PREVIOUS_TIME
START_HR=`echo "$PREVIOUS_TIME" | awk '{print substr($0,1,2)}'`
echo $START_HR
END_HR=`echo "$CURRENT_TIME" | awk '{print substr($0,1,2)}'`
echo $END_HR
START_MINS=`expr $START_HR \* 60`
echo $START_MINS
}

Thanks a lot!!
# 9  
Old 03-01-2010
substr is a test ksh88/ksh93.
Code:
a="0123456"
echo ${a:2:3}   # output is 234

date is not builtin command, it's in command in your system. -d option is in gnu date, not ex. in bsd date.

printf is builtin command in ksh93. So man ksh93 include documentation to use printf.

You don't need export in your code. Local variables is enough. Environment variables (export variable) are needed if you call subprocess and subprocess need those variables value also.

If you like to use ksh93, check download. Maybe your system is still supported.
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