Can't do inplace edit without backup

[varsha21]

Hi,

I am writing a command line perl program to convert a file in dos format to unix format.

I know that the following instruction executes successfully on one of the unix machine. I am trying to execute it through cygwin.

perl -pi -e 's/\r\n/\n/;' InputAndOutputFile.sh

But I get following error.
Can't do inplace edit without backup

I tried to run:
perl -pi 'junk.bak' -e 's/\r\n/\n/;' InputAndOutputFile.sh

It gives me
Can't open -e: No such file or directory.
Can't open s/\r\n/\n/;: No such file or directory.
Can't do inplace edit without backup.

error.

Any Idea how can this be resoled?

Thanks,
Varsha

[KevinADC]

try:

perl -pi.bak -e 's/\r\n/\n/;' InputAndOutputFile.sh 

or:

perl -pi.bak -e "s/\r\n/\n/;" InputAndOutputFile.sh