root> sudo ./atlassian-confluence-7.3.4-x64.bin
WARNING: Please make sure fontconfig is installed in your Linux distribution for Confluence installation.
Visit KB article for more information. https://confluence.atlassian.com/x/JP06OQ
gzip: sfx_archive.tar.gz: not in gzip format
I am sorry, but the installer file seems to be corrupted.
If you downloaded that file please try it again. If you
transfer that file with ftp please make sure that you are
using binary mode.
I downloaded again, same issue