Error while checking file existance


 
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# 1  
Old 11-21-2012
Error while checking file existance

Kindly help on below script:
Code:
<<

i='find ...'

if [ -f $i ] then
 echo 'File Exists'
else
  echo 'File Does Not Exist'

>>

If i has some file name then it runs properly but if i has nothing ( blank value) then it throws an error. I dont exactly remember right now but error seems like: "test:..parameter..."

To me it looks like if variablei does not have any file name if statements gets fail.

Could you please suggest me the right way to check if i has some file name and existence of file.

Thanks in advance

Moderator's Comments:
Mod Comment Please use code tags next time for your code and data.

Last edited by vbe; 11-21-2012 at 01:22 PM..
# 2  
Old 11-21-2012
Check if variable is not empty and then proceed to avoid error:-
Code:
if [ ! -z "$i" ]
then
        if [ -f "$i" ]
        then
                echo "File exists"
        else
                echo "File doesn't exists"
        fi
fi

# 3  
Old 11-21-2012
Quote:
Originally Posted by bipinajith
Check if variable is not empty and then proceed to avoid error
Not necessary. A [ -f "$i" ] is enough.
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