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sshpass: Login To SSH Server / Provide SSH Password Using A Shell Script

in BASH Shell, CentOS, Debian / Ubuntu, Fedora Linux, FreeBSD, Linux, Networking, OpenBSD, Security, Security Through Obscurity, UNIX last updated January 13, 2017

How do I login over ssh without using password less RSA / DSA public keys? How do I use ssh in a shell script? How do I login non-interactivly performing password authentication with SSH and shell scripts?