Hello Phyllis, I had been running Mint and had cin Installed. Switched to Ubuntu Studio douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ Sudo https://cinelerra-gg.org/download/pkgs/mint19 bionic main Command 'Sudo' not found, did you mean: command 'ludo' from snap ludo (0.11.0) command 'udo' from deb udo (6.4.1-4) command 'sudo' from deb sudo (1.8.27-1ubuntu4.1) command 'sudo' from deb sudo-ldap (1.8.27-1ubuntu4.1) See 'snap info <snapname>' for additional versions. douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ sudo deb [trusted=yes] https://cinelerra-gg.org/download/pkgs/mint19 bionic main [sudo] password for douglas: sudo: deb: command not found douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ deb [trusted=yes] https://cinelerra-gg.org/download/pkgs/mint19 bionic main Command 'deb' not found, did you mean: command 'dub' from snap dub (1.19.0) command 'den' from snap den (1.2.0-0) command 'dep' from deb go-dep (0.5.4-2) command 'dex' from deb dex (0.8.0-2) command 'debi' from deb devscripts (2.19.6ubuntu1) command 'dab' from deb bsdgames (2.17-28) command 'debc' from deb devscripts (2.19.6ubuntu1) command 'deb3' from deb quilt (0.65-3) command 'edb' from deb edb-debugger (1.0.0-1build2) command 'dub' from deb dub (1.16.0-1build1) command 'derb' from deb icu-devtools (63.2-2ubuntu0.1) command 'xdeb' from deb xdeb (0.6.7) See 'snap info <snapname>' for additional versions. douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ https://cinelerra-gg.org/download/pkgs/mint19 bionic main bash: https://cinelerra-gg.org/download/pkgs/mint19: No such file or directory douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ apt update Reading package lists... Done E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied) E: Unable to lock directory /var/lib/apt/lists/ W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (13: Permission denied) W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin - RemoveCaches (13: Permission denied) douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ apt install cin E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root? douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ sudo apt install cin Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package cin douglas@douglas-HP-Pavilion-Gaming-Desktop-690-00xx:~$ I have had a struggle getting Cinelerra GG installed before. I guess I just don't understand this process . Thanks for any help that will help me get cin installed, Douglas