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Or, if you have restricted access for sftp only, I think you can still do this:
diff /path/to/localfile <(scp user@host:/path/to/remotefile >(cat))
There are 4 alternatives - vote for the best!
Useful for checking if there are differences between local and remote files.
A little messy, but functional. Requires vim >= 7.x.
This method does not transfer the contents of the entire file, instead it computes a md5 sum of the file on each end so that large files can be compared without transferring them across the net.
If you can do better, submit your command here.
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