unix - How to remove carriage return from a variable in shell script

Question

I am new to shell script. I am sourcing a file, which is created in Windows and has carriage returns, using the source command. After I source when I append some characters to it, it always comes to the start of the line.

test.dat (which has carriage return at end):

testVar=value123

testScript.sh (sources above file):

source test.dat
echo $testVar got it

The output I get is

got it23

How can I remove the ' ' from the variable?

Answer 1

yet another solution uses tr:

echo $testVar | tr -d '
'
cat myscript | tr -d '
'

the option -d stands for delete.