Problem with date in conjunction with cut? Post: 302570197

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Top Forums Shell Programming and Scripting Problem with date in conjunction with cut? Post 302570197 by DuskFall on Wednesday 2nd of November 2011 03:10:11 PM

11-02-2011

Registered User

This is the body of the code i use (been updated with the '((' that you recomended)

Code:

ALARMHOUR=`echo "$ALARMTIME" | cut -d : -f 1 `
ALARMMINUTE=`echo "$ALARMTIME" | cut -d : -f 2 `
ALARMSECOND=`echo "$ALARMTIME" | cut -d : -f 3 `

for (( ;; )) do
  clear
  TIME=`date "+%H:%M:%S"`

read HOUR MINUTE SECOND <<<$(date +"%H %M %S")

  SECONDDIFF=$((SECOND-ALARMSECOND))
  SECONDDIFF=$((60-SECONDDIFF))

  if [ $SECONDDIFF -lt 10 ]; then
    SECONDDIFF="0$SECONDDIFF"
  fi

  MINUTEDIFF=$(($MINUTE-$ALARMMINUTE))
  MINUTEDIFF=$((59-MINUTEDIFF))

  if [ $MINUTEDIFF -lt 10 ]; then
    MINUTEDIFF ="0$MINUTEDIFF"
  fi

  HOURDIFF=$(($HOUR-$ALARMHOUR))
  if [ $HOURDIFF -lt 0 ]; then
    HOURDIFF=$((HOURDIFF-HOURDIFF-HOURDIFF))
  elif [ $HOURDIFF -gt 0 ]; then
    HOURDIFF=$((24-HOURDIFF))
  fi

  if [ $HOURDIFF -lt 10 ]; then
    HOURDIFF="0$HOURDIFF"
  fi

  echo "Current time : $HOUR:$MINUTE:$SECOND"
  echo ""
  echo "  Alarm time : $ALARMTIME"
  echo ""
  echo "  Difference : $HOURDIFF:$MINUTEDIFF:$SECONDDIFF"
  ...
  sleep 1
done

It cycles through that, updating every second, but when SECONDS reaches 08, it exits with the following error :
/bin/TermTime (unstable): line 33: 08: value too great for base (error token is "08")

I have tried setting the SECONDS variable in the form :

if [ $SECONDS = 8 ]; then
SECONDS=8
fi

Didn't expect it to work and it didn't, but i thought i would try it
The strange thing is that i don't think it does this with MINUTES or HOURS, just SECONDS...

What do you suggest?

DuskFall

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LEARN ABOUT OPENSOLARIS

echo

echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME

       echo - echo arguments to standard output

SYNOPSIS

       /usr/ucb/echo [-n] [argument]

DESCRIPTION

       echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.

       echo  is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
       ronment variables.

       For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:

	   o	  echo your current-working-directory's full pathname

	   o	  pipe the output through tr to translate the path's embedded slash-characters into space-characters

	   o	  pipe that output through wc -w for a count of the names in your path.

		    example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"

       See tr(1) and wc(1) for their functionality.

       The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be  invoked	if
       the  user  calls  echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
       characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the  black-slashed  escape  characters,	and  ksh's
       echo() also understands a as the audible bell character; however, these commands do not have an -n option.

OPTIONS

       -n    Do not add the NEWLINE to the output.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)

NOTES

       The -n option is a transition aid for BSD applications, and may not be supported in future  releases.

SunOS 5.11							    3 Aug 1994								  echo(1B)

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