p7zip software package provides 7z file archiver with high compression ratio, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install p7zip
p7zip is installed in your system.
Make ensure the p7zip package were installed using the commands given below,
$ sudo dpkg-query -l | grep p7zip *
You will get with p7zip package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | p7zip |
| Version | 9.20.1~dfsg.1-4+deb7u2build0.1 |
| Description | 7z file archiver with high compression ratio |
| Sub Section | Utils |