Shell Programming and Scripting

Hi,

I would like to see the file list which contains the data.

Ex : - When I enter the "ls -ltr" command it will show all the files which are exists in the directory, But I want only those files list which are non zero byte by using only ls command.

I knew that I can write a script with "-s" option through script but I want the list through ls command...

For better understanding I am posting with example : -

$ls -ltr
-rw-r--r-- 1 userID MyGroup 0 Mar 2 10:27 a.txt
-rw-r--r-- 1 userID MyGroup 0 Mar 2 10:27 b.txt
-rw-r--r-- 1 userID MyGroup 50 Mar 2 10:27 c.txt
-rw-r--r-- 1 userID MyGroup 0 Mar 2 10:27 d.txt
-rw-r--r-- 1 userID MyGroup 200 Mar 2 11:24 e.txt
-rw-r--r-- 1 userID MyGroup 0 Mar 4 03:14 f.txt
-rw-r--r-- 1 userID MyGroup 100 Mar 4 03:14 g.txt
-rw-r--r-- 1 userID MyGroup 0 Mar 4 03:14 h.txt
-rw-r--r-- 1 userID MyGroup 0 Mar 4 03:14 i.txt

I want to see only c.txt, e.txt and g.txt from the above list, not all.

Please advice me how to solve this.

---------- Post updated at 05:17 AM ---------- Previous update was at 05:15 AM ----------

I don't want to delete the 0 byte files, I want to list out only those files which caontains data.

Try this,

Code:

ls -lrt | sed -r "s/(.+\s+.+\s+.+\s+.+\s+0\s+.+)//g"

When I try the below command.....I am getting the "illegal option" meesage.

Code:

$  ls -lrt | sed -r "s/(.+\s+.+\s+.+\s+.+\s+0\s+.+)//g"
sed: illegal option -- r
$

I am working in linux system which has the version 2.6.26-2-686.The '-r' option in sed is available in this .

See the following command.

Code:

ls -lrt | egrep -v "(.*) (.*) (.*) 0 (.*) (.*) (.*)"

or

Code:

ls -lrt | egrep -v "(.*?) (.*?) (.*?) 0 (.*?) (.*?) (.*?)"

Thank you, I am getting the results what I am looking for.

But Could you please explain me how it works....It would be very great....

egrep is equal to grep -E

Using regular expression I matched the pattern.
-v option is used to invert match options.

( ) = grouping in regular expression.

For More information refer the following link.
Regular Expressions in grep