Generic Linux binaries for x86 can be downloaded. This will get you a compressed tar.gz archive that will have a name similar to julia-1.0-linux-x86_64.tar.gz, for example, in your ~/Downloads directory in Ubuntu. Open up a Terminal window and navigate to the Downloads directory using cd Downloads. Move the tar.gz file to a directory of your choice, and then extract the tar.gz file using the tar -zxvf julia-1.0-linux-x86_64.tar.gz command. A directory with the extracted contents will be generated in the same parent directory as the compressed archive with a name similar to julia-n.m.p, where n.m.p is Julia's version number.
This is the directory from which Julia will be run; no further installation is needed. To run it, simply ...