Solving Error: “syntax error near unexpected token”

Detail Error:

: command not found

: command not found

'/build.sh: line 3: syntax error near unexpected token `{

'/build.sh: line 3: `function stop_channels(){

was thrown when I run

./build.sh

The issue was I opened the .sh (shell script) in Windows OS and Windows changed the end of the line to CRLF

I found this out by running

cat --show-nonprinting filename.extension

E.g.

cat --show-nonprinting test.sh

Or open the file in Notepad++ and click on the button circled in the figure below.

Then, I converted it using

dos2unix filename.extension

[Install dos2unix if required]

E.g.

dos2unix myfile.txt

dos2unix myshell.sh