How do I run dna.sh from cygwin?

Question

I downloaded a dna.sh off of Github, and I can't seem to get it to work on cygwin. When I use the command,

sh dna.sh

, I get the error,

 : No such file or directory
dna.sh: line 7: $'\r': command not found 
dan.sh: line 9: syntax error near unexpected token `$'do\r' '
'na.sh: line 9: `for j in f b; do

The contents of the dna.sh are here: https://github.com/jaykru/colorscripts/blob/master/dna.sh

Search [with this](http://stackoverflow.com/search?q=%22%24%27%5Cr%27%3A+command+not+found%22+is%3Aquestion) for other similar cases. — Mat, Sep 15 '13 at 19:10
Are you sure you have copied the content right way.. because it works for me. — user1502952, Sep 15 '13 at 20:10
I wonder how much money the extra `\r` in Windows line endings has cost the IT industry? — cdarke, Sep 15 '13 at 21:42
have you tried `bash dna.sh` or just `./dna.sh`? maybe `sh` in cygwin is not linked to `bash` like it is on linux systems? — Red Cricket, Sep 16 '13 at 00:54

score 2 · Accepted Answer · answered Sep 16 '13 at 02:02

Did you write your file in Windows and now are executing it in Cygwin? Please, don't tell me you used Notepad.exe.

dope slap!

Your problem is that Windows puts a Carriage Return and a Line Feed character at the end of each line \r\n. However, Unix (and Cygwin) insist that the correct line ending combination is a mere Linefeed \n.

Use a real program editor to write your programs. Don't use Notepad. Download Notepad++ and set it to use LF (Unix line endings) on all your shell scripts. Or, learn to edit your files in Cygwin. You can use VIM or gmacs (gmacs is a great operating system. Too bad there's no editor with it. //old Editor war joke//).

Actually, there are a variety of GUI editors on Cygwin too, but you have to get X11 working.

You can try dos2unix on Cygwin -- if you've installed it.

Thank you so much! You were right. I knew I shouldn't use Notepad.exe, but I didn't know I had to set Notepad++ to LF. — Caleb Van Tassel, Sep 16 '13 at 02:17

How do I run dna.sh from cygwin?

1 Answers1