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Old 12-08-2006, 12:38 AM   #1
newbie_adm
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Registered: Jun 2006
Posts: 40

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date errors


Hi, Just wanted to ask why is my script is not runnng correctly, but it used to work before. I have used the script for almost 2 months now. Just this day that it recieved an error. My script will get the yesterdays date and cdrfiles.

cdr_cal23 --> script name. This will the next day.And it wet get yesterdays data.

TIME parameters
YEAR1=`date '+%Y'`
DAY1=`date '+%d'`
(( DAY1 = DAY1-1 ))
if (( DAY1 < 10))
then DAY1="0"$DAY1
fi

I having errors on (( DAY1 = DAY1-1)) and on the if statement.

The errors are : "bash: ((: 08: value too great for base (error token is "08")"

What would I do with this, it used to work before without problems.

Please help.

Thanks
 
Old 12-08-2006, 01:00 AM   #2
matthewg42
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Registered: Oct 2003
Location: UK
Distribution: Kubuntu 12.10 (using awesome wm though)
Posts: 3,530

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You're close. Integer arithmatic can be done like this:
Code:
day=6
result=$(( $day - 1 ))
 
Old 12-08-2006, 01:08 AM   #3
newbie_adm
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Registered: Jun 2006
Posts: 40

Original Poster
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I tried doing that thing. but resulted with the same errors. Please help. I tried running it on a HP-ux platform and it worked properly. I just wondering why it did not run successfully today. Please help.

Thanks
 
Old 12-08-2006, 01:12 AM   #4
matthewg42
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Registered: Oct 2003
Location: UK
Distribution: Kubuntu 12.10 (using awesome wm though)
Posts: 3,530

Rep: Reputation: 63
Looks like your script is written for C style shells. linux uses bash (a borne style shell) by default, which uses different syntax.

You could install tcsh, and then have the first lilne of your script as:
Code:
#!/bin/tcsh
However, consider not using c shells - they're horrible to code in. Learn the borne style shell syntax - you'll never look back.
 
Old 12-08-2006, 03:37 AM   #5
AnanthaP
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Registered: Jul 2004
Location: Chennai, India
Distribution: UBUNTU 5.10 since Jul-18,2006 on Intel 820 DC
Posts: 813

Rep: Reputation: 195Reputation: 195
I think "expr" will help.

For example: (have to check it out)
DAY1=`expr $DAY1 - "1"`

if [ DAY1 -lt `expr "10"` ]
then
DAY1=`echo 0$DAY1
fi
 
  


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