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Help within a for loop!!!

 
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# 1  
Old 03-29-2007
Help within a for loop!!!
Hi,,

I have two files which come on daily basis.Somthing like

BB_1002985_100
BB_1002985_101

and the nextday,it will come with incremental values,Something like

BB_1002985_102
BB_1002985_103 and so on....

I want this to be put inside a loop,with the values changing dynamically and with a max value of 1000 and once it reaches,it should start from 001 and so on..

Your help is really appreciated,
Thanks,
Kumar
# 2  
Old 03-29-2007
FileName Generation
Hi,
If i got your question hope this could be a solution,

PHP Code:
#!/bin/ksh
 IDX_HOLD=/tmp/LastIndex.hold
 let MAX=10
 let INI=0
 let PREV_INDEX

if [[ ! -e $IDX_HOLD ]] ; then
    touch $IDX_HOLD
    PREV_INDEX=$INI
else
   PREV_INDEX=$(tail -1 $IDX_HOLD)
   if [[ PREV_INDEX -ge MAX ]] ; then
         INI=PREV_INDEX=0
   else
        INI=$PREV_INDEX
    fi
fi

while [[ INI -le MAX ]] ; do
       touch /tmp/a_file_${INI}
       ((INI++))
       touch /tmp/b_file_${INI}
       ((INI++))
       break
done

PREV_INDEX=$INI

echo "The Last file created has the index of $PREV_INDEX"

echo "$INI" > $IDX_HOLD 
Note:
Here the MAX value is set to 10.Also the IDX_FILE for holding the index of the last created file is saved in /tmp folder,incase if you use this script choose another directory ,so that IDX_FILE file is not deleted the next day.

Please let us know if this answers your question.Experts comment on this approach.

Thanks,
Nagarajan Ganesan.
# 3  
Old 03-30-2007
Quote:
Originally Posted by ennstate
Hi,
If i got your question hope this could be a solution,

PHP Code:
#!/bin/ksh
 IDX_HOLD=/tmp/ss/LastIndex.hold
 let MAX=10
 let INI=0
 let PREV_INDEX

if [[ ! -e $IDX_HOLD ]] ; then
    touch $IDX_HOLD
    PREV_INDEX=$INI
else
   PREV_INDEX=$(tail -1 $IDX_HOLD)
   if [[ PREV_INDEX -ge MAX ]] ; then
         INI=PREV_INDEX=0
   else
        INI=$PREV_INDEX
    fi
fi

while [[ INI -le MAX ]] ; do
       touch /tmp/ss/a_file_${INI}
       ((INI++))
       touch /tmp/ss/b_file_${INI}
       ((INI++))
       break
done

PREV_INDEX=$INI

echo "The Last file created has the index of $PREV_INDEX"

echo "$INI" > $IDX_HOLD 
Note:
Here the MAX value is set to 10.Also the IDX_FILE for holding the index of the last created file is saved in /tmp folder,incase if you use this script choose another directory ,so that IDX_FILE file is not deleted the next day.

Please let us know if this answers your question.Experts comment on this approach.

Thanks,
Nagarajan Ganesan.
When i execute the above code,it says....

> ./bx.sh
./bx.sh[21]: INI++: more tokens expected
>
# 4  
Old 03-30-2007
I guess you have other shell as home shell instead of ksh(korn shell)
invoke the script with
Code:
ksh scriptname

# 5  
Old 03-30-2007
Quote:
Originally Posted by Dhruva
I guess you have other shell as home shell instead of ksh(korn shell)
invoke the script with
Code:
ksh scriptname

I have mentioned in the script itself right,i mean on which shell the program as to execute.I did try your suggestion,but still the same mesg..
> ksh bx.sh
bx.sh[21]: INI++: more tokens expected
>
# 6  
Old 03-30-2007
replace while loop with
Code:
while [[ INI -le MAX ]] ; do 
       touch a_file_${INI} 
       INI=$((INI+1)) 
       touch b_file_${INI} 
       INI=$((INI+1)) 
       break 
done

# 7  
Old 03-30-2007
Quote:
Originally Posted by Dhruva
replace while loop with
Code:
while [[ INI -le MAX ]] ; do 
       touch a_file_${INI} 
       INI=$((INI+1)) 
       touch b_file_${INI} 
       INI=$((INI+1)) 
       break 
done


Thanks a lot Dhruva....It is working fine now....I did see your reponse to the sendmail posts....I'm stuck with a mail script myself....The script isnt throwing any errors...but it isnt sending any mails too..

can you please take a look at this thread....

http://unix.com/showthread.php?t=36544

Thanks again,
Kumar
 
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