:integer expression expected


 
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# 1  
Old 10-20-2010
:integer expression expected

Hi,


Code:
echo $i

until [ "$NUM" -gt "0" ] || [ "$NUM" -le "$i" ]
do
read NUM
      if [ "$NUM" -lt "1" ] && [ "$NUM" -gt "$i" ] ; then
      printf "$FBOLD\nInvalid number, please enter valid backup number: $FREG"
      fi
done


Getting below error :

./import_location.sh: line 234: [: : integer expression expected
./import_location.sh: line 234: [: : integer expression expected
./import_location.sh: line 237: [: : integer expression expected
./import_location.sh: line 234: [: : integer expression expected
./import_location.sh: line 234: [: : integer expression expected

where mistake is done ?

With Regards
# 2  
Old 10-20-2010
What value doesn $NUM have?
# 3  
Old 10-20-2010
As the error says, it is expecting at
Code:
... [ "$NUM" ...

an integer.

Maybe echo $NUM to check what it currently is or add a set -x and a set +x to enable and disable debugging.
# 4  
Old 10-20-2010
What Shell are you using?
What is a sample value for $i , and what does it signify?
What is a sample value for $NUM?
What is a valid range for $NUM ?
# 5  
Old 10-20-2010
Which shell are you using ?
try to
double the bracket [[ ]]
initialize your variable
gather the contitions into one bracket [[ || ]] instead of [[ ]] || [[ ]]
remove the double quote inside condition brackets (should be the last thing to try)
... and see if a miracle happen Smilie

what about this statement :
Code:
printf "$FBOLD\nInvalid number, please enter valid backup number: $FREG"

shouldn't it be smthg like
Code:
printf "%s \nInvalid number, please enter valid backup number:  " $FBOLD 
read FREG

or whatever format should $FBOLD fit

I think your printf syntax may need to be checked

Last edited by ctsgnb; 10-20-2010 at 02:01 PM..
# 6  
Old 10-20-2010
Try this:

Code:
echo $i

while true
do
    read NUM
    if [ $NUM -gt 0 -a $NUM -le $i ] 2> /dev/null; then
        break
    fi
    printf "$FBOLD\nInvalid number, please enter valid backup number: $FREG"
done

Also handles any non numeric NUM values: test will fail so break isn't executed, redirect stderr to /dev/null to hide shell error message.

Last edited by Chubler_XL; 10-20-2010 at 03:35 PM..
This User Gave Thanks to Chubler_XL For This Post:
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