$ cat /etc/issue

Ubuntu 18.04 LTS 

 l



$ sudo apt-get update

Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease

Hit:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease

Hit:3 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease

Reading package lists... Done



$ sudo apt-get install clang-14

Reading package lists... Done

Building dependency tree

Reading state information... Done

E: Unable to locate package clang-14



$ clang++ -v

clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)

Target: x86_64-pc-linux-gnu

Thread model: posix

InstalledDir: /usr/bin

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/5

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/5.5.0

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0

Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.5.0

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0

Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8

Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0

Candidate multilib: .;@m64

Selected multilib: .;@m64