compatibility cygwin / with dos-path

when i run in dos for example:
C: ls /temp
ls: cannot access /temp: No such file or directory

but when i run
C: ls \temp
windriver backup remotebackup
also when i run
C: ls temp
windriver backup remotebackup
The problems that i have all developpers scripts was written first like this example ls /dir1 or cp /dir2 , we canno't change all scripts.
So i want to solve this problems to get these scripts running

please do you have any advices or suggestions for this problem ,

Thanks for your help,