How to respond to password prompt when using SCP in a shell script?

Question

First of all, I am well aware of that there are many of questions regarding this topic. I have read them, but still could figure out an appropriate answer for my situation.<

Answer 1

Once you set up ssh-keygen as explained here, you can do

scp -i ~/.ssh/id_rsa /local/path/to/file remote@ip.com:/path/in/remote/server/

where id_rsa is the local key generated in the ssh-keygen setup.

If you want to lessen typing each time, you can modify your .bash_profile file and put

alias remote_scp='scp -i ~/.ssh/id_rsa /local/path/to/file remote@ip.com:/path/in/remote/server/

Then from your terminal do source ~/.bash_profile. Afterwards if you type remote_scp in your terminal it should run the scp command without password.