Not able to execute a .sh file: /bin/bash^M: bad interpreter

I wanted to execute a shell script:

-rwxr-x--x 1 root root   17234 Jun  6 18:31 create_mgw_3shelf_6xIPNI1P.sh

I tried to do a standard procedure, but I got this error:

./create_mgw_3shelf_6xIPNI1P.sh 
localhost 389 -l /opt/fews/sessions/AMGWM19/log/2013-06-06-143637_CLA-0 
DEBUG   cd/etc/opt/ldapfiles/ldif_in ;
./create_mgw_3shelf_6xIPNI1P.sh 
localhost 389 -l /opt/fews/sessions/AMGWM19/log/2013-06-06-143637_CLA-0
**ERROR  sh: ./create_mgw_3shelf_6xIPNI1P.sh: /bin/bash^M: bad interpreter: No such file or directory**

What does it mean? I was doing this as the root user under the root group.

Does it mean that the file does not have the correct permission for the root user?

Solution 1:

This isn't a permission issue, you aren't getting a message about permissions

/bin/bash^M: bad interpreter: No such file or directory

The script indicates that it must be executed by a shell located at /bin/bash^M. There is no such file: it's called /bin/bash.

The ^M is a carriage return character. Linux uses the line feed character to mark the end of a line, whereas Windows uses the two-character sequence CR LF. Your file has Windows line endings, which is confusing Linux.

Remove the spurious CR characters. You can do it with the following command:

sed -i -e 's/\r$//' create_mgw_3shelf_6xIPNI1P.sh

Solution 2:

In vim you could also use :set ff=unix and then save the file, or :set ff=dos to get DOS formatting again.