Question

I am storing bash scripts onto a CentOS server from PHP over SSH2; I know it is complicated, but just bear with me.

When I open up the file (on the server):

vi myScript

I see:

ls -al^M
free -m

So, when I try an execute it with:

bash myScript

The output throws an error:

ls: invalid option -- 
Try `ls --help' for more information.
         total       used       free     shared    buffers     cached
Mem:           676        642         34          0         33        313
-/+ buffers/cache:        295        380
Swap:          767          1        766

What is the ^M and any idea where it is coming from? The bash script should to be able to support newlines and tabs.

Thanks.

Answer 1

^M is end of line coming from Windows. The file was created in Windows initially. You may do in vi something like :1,$ s/^v^M//g to delete those.

Also you can use dos2unix command on the entire file to clean it in one shot. You can do it before execution of script.