[quote=“ggoodluck47”]Salut,
L’orthographe a une certaine importance, il ne s’agirait pas plutôt de “unrar”
[/quote]
Non, c’est “unar” 
user@pc:~$ apt-cache show unar
Package: unar
Version: 1.1-2
Installed-Size: 3941
Maintainer: Matt Kraai <kraai@debian.org>
Architecture: amd64
Replaces: theunarchiver
Provides: theunarchiver
Depends: gnustep-base-runtime (>= 1.22.1), libbz2-1.0, libc6 (>= 2.7), libgcc1 (>= 1:4.1.1), libgnustep-base1.22 (>= 1.22.1), libicu48 (>= 4.8-1), libobjc4 (>= 4.2.1), libssl1.0.0 (>= 1.0.0), libstdc++6 (>= 4.1.1), libwavpack1 (>= 4.40.0), zlib1g (>= 1:1.2.0)
Pre-Depends: dpkg (>= 1.15.6~)
Conflicts: theunarchiver
Description-en: Unarchiver for a variety of file formats
The Unarchiver is an archive unpacker program with support for the popular
zip, RAR, 7z, tar, gzip, bzip2, LZMA, XZ, CAB, MSI, NSIS, EXE, ISO, BIN, and
split file formats, as well as the old Stuffit, Stuffit X, DiskDouble, Compact
Pro, Packit, cpio, compress (.Z), ARJ, ARC, PAK, ACE, ZOO, LZH, ADF, DMS, LZX,
PowerPacker, LBR, Squeeze, Crunch, and other old formats.
.
This package contains the lsar tool which lists the contents of archives and
the unar tool which extracts those contents.
Homepage: http://wakaba.c3.cx/s/apps/unarchiver.html
Description-md5: 37d65eb2eb69dfafae7ecf5471c75313
Tag: implemented-in::c++, implemented-in::objc, interface::commandline,
role::program, scope::utility, use::compressing, works-with::archive,
works-with::file
Section: utils
Priority: optional
Filename: pool/main/u/unar/unar_1.1-2_amd64.deb
Size: 977414
MD5sum: 1469d939f88af3e2f2f0a1c595311c7b
SHA1: fab274341ab8375012d2e327b122bc3e0cbf9d60
SHA256: bfdf720a6252232cd73ffbceb895705af5b7c2e5a097a0c2a6df90ffa360dfca