equivalent of ftp put and append in scp

Question

I have a legacy script which I am not able to understand.

The script is to transfer 4 files (2 ebcdic format files and 2 pdf files) in unix to mainframes through ftp.

Answer 1

scp can not append (ssh can, but it is not always an option). You can copy remote file, append it locally and then put it back.

Answer 2

Put is just the normal scp

scp /path/to/source user@host:/path/to/target

Append only works with a little hack (and not with scp directly)

cat source | ssh user@host "cat >> /path/to/target"