Shell Programming and Scripting

I do find this on the prompt ..( it doesnt throw any error message )
unix > ls
a.sh abc.txt
b.sh prod.tar
c.sh leon.exe

after this I am using .............

unix > ls -l | grep *.sh
unix >

( only prompt is returned ...no error message nothing )
( I have relogged the unix box ... but this simple command doesn't work )

should have anything corrupted ?
or has executing any other command has disabled grep command ...No clue

Have you tryed everything I suggested? One more thing to add to the list:
* echo $?
just after the command.

Without all that info, I'm afraid I won't be able to help you...

ls -l
echo $?
whoami ..all are giving proper output

if i use
whoami | grep "mar" ( it gives proper o/p )

but when I use ls -l | grep *.sh .............its not working

Try

Code:

ls | grep ".sh"

I created files by that name and got the output

* is a special character for grep(used in regular expressions)

Thanks Vish ....
It has worked .....

but why it happens ...
If I use * ... then it should consider it as 0 or more occurances of a character ...

I just wanted to see it... OK, I give up: I will believe in what you say and this is my conclusion:
- The grep command si working perfectly.

From what I know * is 0 or more occurrence of the previous character. Since there is no previous character in expression *.sh , it fails. Not sure which character it assumes there.

Try

Code:

 grep .*\.sh

it works. This checks for any character(s) followed by .sh