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need help on "if else" issue

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# 1  
Old 10-08-2012
need help on "if else" issue
Hi,
I am trying to read lines from a file and check if the length is correct. But the test condition in if has some issues and I am not able to figure out, what the problem is?
Kindly help me with this issue.

I am using bash shell.
Code:
 while read line
  do
   len=${#line}

  if[ [ "$len" -ne 53 ] ];then
     echo "wrong"
     exit 1
   else
     echo "Perfect"
   fi
  done <"$filename"

# 2  
Old 10-08-2012
Quote:
Originally Posted by babom

Code:
 while read line
  do
   len=${#line}

  if [[ "$len" -ne 53 ]];then
     echo "wrong"
     exit 1
   else
     echo "Perfect"
   fi
  done <"$filename"

Space not required between square brackets..
try now..
# 3  
Old 10-08-2012
I still have issues even after the spaces where removed.
# 4  
Old 10-08-2012
Try this :

Code:
$: cat text.txt | while read line
> do
> len=${#line}
> if [ "$len" -ne 53 ]; then
> echo "wrong"
> exit 1
> else
> echo "Perfect"
> fi
> done
wrong
$:

It surely works. In your original code you may have 2 mistakes :
1) you do not need double square brackets "[["
2) you need a space between "if" and "["

However it would be useful to post also the error you encounter.
Obviously text.txt will be replaced with your file (and its respective absolute path if necessary)
This User Gave Thanks to black_fender For This Post:
babom
# 5  
Old 10-08-2012
It worked after I added a space after if.

Thanks a lot.
# 6  
Old 10-08-2012
Quote:
Originally Posted by babom
I still have issues even after the spaces where removed.
Actually in my previous post itself i have already edited your code and posted there. But i think you have not tried that. See post 2. Copy and then execute the code.Smilie
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