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 '\r' from the variable?

Answer 1

yet another solution uses tr:

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

the option -d stands for delete.