问题
So, I have a bit of a problem:
Originally I was using scp to copy a file from a local machine to a remote machine before I realized that scp overwrites instead of appends. But I need it to append. So I did some Googling and this alternative using cat and ssh popped up instead:
cat localfile | ssh user@remoteserver "cat >> remotefile"
Problem is, I get this interesting error whenever I use that method:
bash: cat: command not found
When I normally ssh into my remote machine, I can cat just fine, so I'm looking for either help fixing this problem or finding a way to append using only commands from my local host.
回答1:
Your $PATH may be different when running through ssh.
Anyway, you can run which cat to find where cat is actually placed on the remote machine and hard code the path in the command invocation. For instance
ssh user@remoteserver "/sbin/cat >>remotefile" <localfile
(BTW, you don't really need the local cat).
Another option would be to use a SFTP client with support for appending.
来源：https://stackoverflow.com/questions/13650312/copy-and-append-files-to-a-remote-machine-cat-error