我下载了档案，解压，切换到父目录并执行：
./install-tl。我选择了选项 D，指定了目录/home/jerzy/texlive并继续安装。安装结束时我得到了以下输出：
Installing [4248/4248, time/total: 02:04:06/02:23:29]: zztex [147k]
Retrying to install: arphic-ttf [12380k]
Retrying to install: asymptote-manual-zh-cn [878k]
Retrying to install: bibtexu.x86_64-linux [5533k]
Retrying to install: cbfonts [64879k]
Retrying to install: charissil [1306k]
Retrying to install: comprehensive [29211k]
Retrying to install: cstex [3871k]
Retrying to install: dnaseq [209k]
Retrying to install: einfart [553k]
Retrying to install: emf [320k]
Retrying to install: ethiop-t1 [5071k]
Retrying to install: fandol [21089k]
Retrying to install: featpost [17579k]
Retrying to install: fonts-tlwg [12364k]
TeXLive::TLUtils::check_file_and_remove: checksums differ for /tmp/qhxNvn9TmC/amCBC97TSi/fonts-tlwg.tar.xz:
TeXLive::TLUtils::check_file_and_remove: tlchecksum=b939062b365e252f7e3a21cbec2841fae7ed100ecbc800bef27a82491f920ab97ca4267f170047250c0afb2042a25bd38a21f128c47056baee91b69cc2e2d388, arg=7239ecb9ffb0dea42d339b1f758c3c4c11f18b6850b5265296c04027922d5ec882d7ee2b6eaf4abb0d2e702ff349833adedc36dd18eac492e191f43da267fdc9
TeXLive::TLUtils::check_file_and_remove: backtrace:
-> tlpkg/TeXLive/TLUtils.pm:2399: TeXLive::TLUtils::check_file_and_remove
-> tlpkg/TeXLive/TLPDB.pm:1978: TeXLive::TLUtils::unpack
-> tlpkg/TeXLive/TLPDB.pm:1813: TeXLive::TLPDB::_install_data
-> tlpkg/TeXLive/TLPDB.pm:1729: TeXLive::TLPDB::not_virtual_install_package
-> tlpkg/TeXLive/TLUtils.pm:1633: TeXLive::TLPDB::install_package
-> ./install-tl:2135: TeXLive::TLUtils::install_packages
-> ./install-tl:946: main::do_install_packages
-> ./install-tl:700: main::do_installation
TeXLive::TLUtils::check_file_and_remove: removing /tmp/qhxNvn9TmC/amCBC97TSi/fonts-tlwg.tar.xz, but saving copy in /tmp/9_P5A9pp2R
TLPDB::_install_data: downloading did not succeed (check_file_and_remove failed) for https://ctan.math.utah.edu/ctan/tex-archive/systems/texlive/tlnet/archive/fonts-tlwg.tar.xz
Installation failed.
Rerunning the installer will try to restart the installation.
Or you can restart by running the installer with:
install-tl --profile installation.profile [YOUR-EXTRA-ARGS]
./install-tl: Writing log in current directory: /home/jerzy/install-tl-20210831/install-tl.log
我再次尝试并得到了类似的输出，但这次校验和不同knuth-pdf：
Installing [4248/4248, time/total: 01:57:16/02:07:08]: zztex [147k]
Retrying to install: aesupp [4394k]
Retrying to install: arabxetex [511k]
Retrying to install: arphic [26908k]
Retrying to install: bgteubner [2527k]
Retrying to install: braids [676k]
Retrying to install: cabin [2877k]
Retrying to install: ccool [812k]
Retrying to install: context [101788k]
Retrying to install: filemod [275k]
Retrying to install: fourier [557k]
Retrying to install: geschichtsfrkl [657k]
Retrying to install: glossaries-portuges [166k]
Retrying to install: gost [1811k]
Retrying to install: iodhbwm [3041k]
Retrying to install: knuth-pdf [44416k]
TeXLive::TLUtils::check_file_and_remove: checksums differ for /tmp/4v3Rm1wO6E/prdZGCoH4W/knuth-pdf.doc.tar.xz:
TeXLive::TLUtils::check_file_and_remove: tlchecksum=f30e79aabb76db7ed9ef8e130408bf140627d71d0d6fcee2b60043e6129fbc4b76a1cf83785bc414d6f6a30d79b8b3d1a784681e94ce4a9f204a315e8e5e5c42, arg=b6bb93794b064466c8bf7f79425a55a111a276a9888b720b7780756b5dbab86c6a573dedcd3946e4f7aa661b6bc6eecbc5f92068a50c0f17a3676e4077acfe0b
TeXLive::TLUtils::check_file_and_remove: backtrace:
-> tlpkg/TeXLive/TLUtils.pm:2399: TeXLive::TLUtils::check_file_and_remove
-> tlpkg/TeXLive/TLPDB.pm:1978: TeXLive::TLUtils::unpack
-> tlpkg/TeXLive/TLPDB.pm:1849: TeXLive::TLPDB::_install_data
-> tlpkg/TeXLive/TLPDB.pm:1729: TeXLive::TLPDB::not_virtual_install_package
-> tlpkg/TeXLive/TLUtils.pm:1633: TeXLive::TLPDB::install_package
-> ./install-tl:2135: TeXLive::TLUtils::install_packages
-> ./install-tl:946: main::do_install_packages
-> ./install-tl:700: main::do_installation
TeXLive::TLUtils::check_file_and_remove: removing /tmp/4v3Rm1wO6E/prdZGCoH4W/knuth-pdf.doc.tar.xz, but saving copy in /tmp/iTbWkWrE1P
TLPDB::_install_data: downloading did not succeed (check_file_and_remove failed) for https://ctan.math.illinois.edu/systems/texlive/tlnet/archive/knuth-pdf.doc.tar.xz
Installation failed.
我的环境：x86_64，Ubuntu Desktop 20.04 LTS。我该怎么做才能成功安装？