Install Seamonkey on CentOS 8

1. Download the compiled tar file from:
https://www.seamonkey-project.org/

For example, download it from:

https://archive.mozilla.org/pub/seamonkey/releases/2.49.5/linux-x86_64/en-US/seamonkey-2.49.5.tar.bz2

2. As user root, move it to /usr/local and untar it:
sudo -i
mv seamonkey-2.49.5.tar.bz2 /usr/local
cd /usr/local
tar xvfj seamonkey-2.49.5.tar.bz2

3. Erase the tar file:
rm -f seamonkey-2.49.5.tar.bz2

4. Create the necessary links:
ln -s /usr/local/seamonkey/seamonkey /usr/local/bin/seamonkey 

(Optional):
ln -s /usr/local/seamonkey/chrome/icons/default/seamonkey.png /usr/share/icons/hicolor/128x128/apps/seamonkey.png

5. Test as normal user:
seamonkey &

6. Create a menu entry in the Applications menu for all the users:


cat<<EOF_DESKTOP>/usr/share/applications/seamonkey.desktop
[Desktop Entry]
Name=Seamonkey
GenericName=Web Browser
Comment=Lightly browse the Web
Exec=/usr/local/bin/seamonkey
Icon=seamonkey
Terminal=false
Type=Application
Categories=Network;WebBrowser;
Keywords=web;browser;internet;
EOF_DESKTOP