I have noticed that some of my files have an asterisk at end.

Does the asterisk at the end have any particular significance? I think they are mostly executable and displayed in green by the ls command.

You will see that ./bkmp* and ./bkmp0* have an asterisk at the end. They are executable bash scripts.

Here's my output:

drwxr-xr-x 7 username username  4096 Oct  2 18:28 ./
drwxr-xr-x 8 root     root      4096 Oct  2 09:25 ../
-rw-r--r-- 1 username username  3724 Sep 22 03:06 .bashrc
-rwxr--r-- 1 username username   319 Sep 22 03:42 .bkmp*
-rwxr--r-- 1 username username   324 Sep 29 23:30 .bkmp0*
drwx------ 2 username username  4096 Sep 17 13:52 .cache/
-rw-r--r-- 1 username username   675 Sep 17 13:37 .profile
drwx------ 2 username username  4096 Sep 22 10:10 .ssh/
drwx------ 2 username username  4096 Sep 24 19:49 .ssh.local/
drwxr-xr-x 2 username username  4096 Sep 22 04:10 archives/
drwxr-xr-x 3 username username  4096 Sep 24 19:51 home/
-rw-r--r-- 1 username username 27511 Sep 24 19:51 username_backup.20120924_1908.tar.gz