Creating script error messages

[Guest_imported]

Hi, just a quick newbie question,

I'm writing a script which takes a filename as a parameter and I'm writing the error messages such as -

if [ -d $file ] then echo "$file is a directory"

but how do I create one that is returned when there is a particular character or string in the name of the file ?

many thanks

 

[MoshiachNow]

if [ -d $file ];then
if echo $file | grep <string>
then echo &quot;$file is a directory&quot;
fi
fi

&quot;Long live king Moshiach !&quot;

 

[Guest_imported]

Perfect, thankyou.