Shell Programming and Scripting

Frenz,

I have a file with certain columns from ls -lR which looks something like:

file stemp
----------
lrwxrwxrwx ./temp/s1 -> 2.ksh
lrwxrwxrwx ./temp/s2 -> 3.ksh
lrwxrwxrwx ./temp/subtemp/s3 -> 1.ksh
lrwxrwxrwx ./temp/subtemp/s4 -> 2.ksh
lrwxrwxrwx ./temp/s5 -> nonksh
lrwxrwxrwx ./temp/subtemp/s6 -> nonksh

I'm trying to extract only those lines from this file which are links to files of .ksh extension.

My expression is:
grep "^l*.ksh\>" stemp but this gives me a null output.

Any corrections on the pattern or any more ideas?

I'd like to do it with sed but have no idea how. Can anyone please help?

Thanks a lot,
Sirisha

Code:

[/tmp]$ echo "lrwxrwxrwx ./temp/s1 -> 2.ksh
> lrwxrwxrwx ./temp/s2 -> 3.ksh
> lrwxrwxrwx ./temp/subtemp/s3 -> 1.ksh
> lrwxrwxrwx ./temp/subtemp/s4 -> 2.ksh
> lrwxrwxrwx ./temp/s5 -> nonksh
> lrwxrwxrwx ./temp/subtemp/s6 -> nonksh" | grep "\.ksh$"
lrwxrwxrwx ./temp/s1 -> 2.ksh
lrwxrwxrwx ./temp/s2 -> 3.ksh
lrwxrwxrwx ./temp/subtemp/s3 -> 1.ksh
lrwxrwxrwx ./temp/subtemp/s4 -> 2.ksh

Thanks Vino!
Even grep "\.ksh$" stemp worked fine.

Also, can you please tell me how to do the same for multiple extensions.. say i want to extract only those lines of .ksh, .sql and .ini. How can the expression be?

Yet, any idea of why my original expression wouldn't work?

Thanks again!
Sirisha

The . in *. means any character, including . itself. If you want to capture the . in its entirety, you need to escape it, like \.

Another thing .* means any character followed by 0 or more characters. So l* means 0 or more occurences of l followed by a single character followed by ksh

In other words your pattern would have caught

Code:

l.ksh
.ksh
ll.ksh
llllllllll.ksh
2ksh
lmksh

Another question!

How can the expression be if I have to do the same for multiple file extensions.. say i want to extract only those lines of .ksh, .sql and .ini. ??

Would this work?
grep "[\.ksh][\.ini][\.sql]$" stemp

Please correct me if I am wrong...

Appreciating ur help,
Sirisha

Try this.

Code:

grep -e "\.ksh" -e "\.sql" -e "\.ini" stemp

If you want to condense those into a single statement, look into egrep or "grep -E" option.

Wonderful Vino,

It really helped solve my problem, and that too in a jiffy. Thank you so much!