fish from shells:fish:beta:3 project

For Debian 9.0 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/shells:/fish:/beta:/3/Debian_9.0/ /' | sudo tee /etc/apt/sources.list.d/shells:fish:beta:3.list
curl -fsSL https://download.opensuse.org/repositories/shells:fish:beta:3/Debian_9.0/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/shells_fish_beta_3.gpg > /dev/null
sudo apt update
sudo apt install fish

For Debian 8.0 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/shells:/fish:/beta:/3/Debian_8.0/ /' | sudo tee /etc/apt/sources.list.d/shells:fish:beta:3.list
curl -fsSL https://download.opensuse.org/repositories/shells:fish:beta:3/Debian_8.0/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/shells_fish_beta_3.gpg > /dev/null
sudo apt update
sudo apt install fish

For openSUSE Leap 42.3 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/shells:fish:beta:3/openSUSE_Leap_42.3/shells:fish:beta:3.repo
zypper refresh
zypper install fish

For RedHat RHEL-6 run the following as root:

cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/shells:fish:beta:3/RedHat_RHEL-6/shells:fish:beta:3.repo
yum install fish

For RHEL 7 run the following as root:

cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/shells:fish:beta:3/RHEL_7/shells:fish:beta:3.repo
yum install fish