I have a shell script which uses SCP command to transfer the files from one server to another server. The files are getting transferred successfully, but the problem is the files transferred to the destination server didnot have the permissions as that of the files on the source server.

Command used: scp file_name username@servername:/dest_directory/

Files permissions on Source server : -rw-r--r--
Files permissions on Destn server : -rw-------

I cannot use "scp -p" or any other variations since there are 40 shell scripts already running daily in the production server(source server)

Please help me to resolve the issue.

Did you try scp with the '-p' option?

-p preserves the file mode - or permssions

I cannot use "scp -p" or any other variations since there are 40 shell scripts already running daily in the production server(source server),Since I need to change all of the scripts

Earlier scp without -p option worked fine. We are facing this problem after the OS upgrade on destination server.

You mean an sshd upgrade as well. That is your problem.

I am assuming something that conforms to openSSH.

The destination node (server) sets the permissions. SFTP_UMASK is an environment variable that you can add to the sshd process on the server. It does what you think - changes permissions for sftp operations. ssh_config may have a SftpUmask setting as well. I DO NOT KNOW if this affects scp.

1. try changing ssh_config to see if it impacts what you need. Every sshd node needs this change.
2. switch to sftp, SFTP_UMASK ....I know it is a code change.
3. use scp -p ... this is a code change too.

Without getting help from your OS provider, 1, 2, 3 are pretty much your choices. The only one I know above that works is scp -p.

Maybe someone else knows a workaround.

Your choice.

in your profile, you could set an alias for scp to be the scp -p command. This would work as long as you didn't do an absolute patch for scp.