Bash script not understood by Ubuntu Bash

Question

I am new to Bash Script. I run the following simple script in Ubuntu like this:

sudo bash -x Script.sh

Output:

+ $'\r'
: command not found
+ $'\r'
: command not found
+ $'\r'
: command not found
+ adminEmail=$'[email protected]\r'
+ $'\r'
: command not found
' echo 'database name:
database name:
+ read $'dbname\r'

The actual script:

#!/bin/bash

# Installation script for latest Wordpress website on Ubuntu
# 
# Kave
# December 27, 2011


adminEmail="[email protected]"

echo "database name:"
read dbname

What are all these '\r' error messages coming up? Even the comments seem not to be understood...

Answer 1

Simply do

dos2unix scriptname

and execute your script.

If you don't have the tool you can do the following to install it.

sudo apt-get install dos2unix

OR

Do the following command line hacks to convert the file.

tr -d '\015' < scriptname > scriptname.new

OR

sed -i 's/\x0D$//' scriptname

Answer 2

You downloaded the file via a Windows machine, and you have CRLF line endings (that's \r\n in C and related languages).

Remove the DOS line endings. For example, edit the file in vim and change the format with :set fileformat=unix (plus Return) and then write the file back out. Alternative techniques could use the tr command, or dos2unix or dtou, depending on what's available.