The OP mentioned SCP, so here's that.
As others have pointed out, SFTP is a confusing since the upload syntax is completely different from the download syntax. It gets marginally easier to remember if you use the same form:
echo 'put LOCALPATH REMOTEPATH' | sftp USER@HOST
echo 'get REMOTEPATH LOCALPATH' | sftp USER@HOST
In reality, this is still a mess, and is why people still use "outdated" commands such as SCP:
scp USER@HOST:REMOTEPATH LOCALPATH
scp LOCALPATH USER@HOST:REMOTEPATH
SCP is secure but dated. It has some bugs that will never be fixed, namely crashing if the server's .bash_profile
emits a message. However, in terms of usability, the devs were years ahead.