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what is use of -d , -a option in if condition

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Top Forums Shell Programming and Scripting what is use of -d , -a option in if condition
# 1  
Old 01-11-2012
Java what is use of -d , -a option in if condition
Below is the code i got from forum. can any one help me on this.

use of -d , -a option in if loop.
Code:
test_function()
{
     echo "converting test files in $1 to ascii"
      if [ -d $1 ] || [ -f $1 ]
     then
                            echo "sucessfully converted"
      else
                            echo "pls check the path"
      exit FAILED
     fi
}

# 2  
Old 01-11-2012
Man test
# 3  
Old 01-11-2012
-d ==>checks whether $1 is a directory or not
-f ==>checks whether $1 is a file or not

thanks,
venkat
# 4  
Old 01-11-2012
Source : Chapter 7. Conditional statements
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