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Full Discussion: Shell script question on variables
Top Forums UNIX for Dummies Questions & Answers Shell script question on variables Post 302303957 by vidyadhar85 on Saturday 4th of April 2009 04:13:26 AM
Old 04-04-2009
if its not bash don't use set command
try this
Code:
#!/bin/sh

# set endtime and print elapsed time
starttime=`date +%s`
echo "Value of starttime: " $starttime
sleep 1
endtime=`date +%s`
echo "Value of endtime: " $endtime
elapsedtime=$(($endtime - $starttime))
printf "Script took %02d:%02d:%02d to complete\n" $((elapsedtime/3600)) $((elapsedtime/60%60)) $((elapsedtime%60))

or try this also

Code:
awk -v start_time=$1 -v end_time=$2 'BEGIN{
if ( start_time !~ /^[0-9]/ || end_time !~ /^[0-9]/ )
usage(start_time,end_time)
split(start_time,T2,":")
split(end_time,T1,":")
start_seconds=T1[1]*60*60+T1[2]*60+T1[3]
end_seconds=T2[1]*60*60+T2[2]*60+T2[3]
if ( start_seconds > 86401 || end_seconds > 86401)
usage("out_off_range","")
elapsed_seconds=start_seconds-end_seconds
if( elapsed_seconds < 0 )
{elapsed_seconds=elapsed_seconds*-1
calculate(end_time,start_time,elapsed_seconds)}
else
calculate(start_time,end_time,elapsed_seconds)}
function calculate(start_time,end_time,elapsed_seconds){
HH=elapsed_seconds / 3600
MM=(elapsed_seconds % 3600) / 60
SS=elapsed_seconds % 60
printf  "TIME DIFFERENCE BETWEEN "start_time"(START TIME)-"end_time"(END TIME)--> +%02d:%02d:%02d\n",HH,MM,SS }
function usage(start_time,end_time){
if( start_time=="out_off_range" )
printf "TIME OUT OFF RANGE\n"
else
printf "INVALID TIME FORMAT "start_time" "end_time"\n"
printf "USAGE : time_diff.sh <HH:MM[:SS]> <HH:MM[:SS]>\n"
exit}'

 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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