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On Ubuntu 14.04 LTS (Trusty Tahr), tidy is very old:

$ tidy --version
HTML Tidy for Linux released on 25 March 2009
$

What's the easiest way to get tidy-html5 installed?

Have I somehow overlooked the package for it?

serv-inc
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Tom Hale
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4 Answers4

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You can install the latest html-tidy from source using the instruction given on its github page.

But the easiest way to install the latest version of html-tidy5 would be downloading the latest binary from this page http://binaries.html-tidy.org/

If you're using 64bit Ubuntu, you'd do basically these commands

wget https://github.com/htacg/tidy-html5/releases/download/5.4.0/tidy-5.4.0-64bit.deb
sudo dpkg -i tidy-5.4.0-64bit.deb

It should be installed fine.

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Anwar
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1. Summary

Method from official documentation.

If you need the latest CLI version, run in terminal:

$ sudo apt-get install xsltproc
$ git clone https://github.com/htacg/tidy-html5.git
$ cd tidy-html5
$ cd build/cmake
$ cmake ../.. -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIB:BOOL=OFF
$ make
$ sudo make install

2. Relevance

This answer is relevant for April 2018. In the future, the data of this answer may be obsolete.

3. Demonstration

On Travis CI environment.

4. Limitations

Else you need custom HTML Tidy things, you can need another options. Some citations of HTML Tidy contributor:

If you are just going to use the console app tidy, which by default is linked with the static library libtidys.a, then not building and installing the shared library, libtidy.so, that is -DBUILD_SHARED_LIB:BOOL=OFF, is fine, but this is unusual in unix/linux…

There are even some in the unix/linux community that prefer to build the console app tidy linking only with the shared library. See the cmake -DTIDY_CONSOLE_SHARED:BOOL=ON option, and see issue #326…

And that also means to try to be consistent with the install location, like using -DCMAKE_INSTALL_PREFIX[:PATH]=/usr, but as stated in most cases the cmake default is also fine… and usually does not represent a problem…

5. Additional links

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Саша Черных
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From source

Follow the instructions at the GitHub page. For the prerequisites, I needed to:

sudo apt-get install -y cmake xsltproc

Package install

Here's what I did to move from the current apt-get install tidy to the latest version.

  1. Find the URL of the latest version to download at: http://binaries.html-tidy.org.

    Try the linux 64-bit DEB first if you're not sure which to pick.

  2. Download it:

    wget <LATEST URL>

  3. Remove unneeded tidy-lib package. tidy-lib is included in the .deb you just downloaded.

    sudo apt-get -y autoremove tidy

  4. Install the .deb you just downloaded: 

    sudo dpkg -i tidy-5.2.0-64bit.deb

  5. Clean up:

    rm tidy-*.deb

Thanks to @Anwar for pointing me in this direction.

Troubleshooting

I needed to do hash -d tidy to get bash to run the new version from /usr/local after I installed from source. You also may need to do this if you chose to keep the previous package of tidy.

Tom Hale
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  • If you install a latest version, older one will be automatically replaced. you don't need to remove it – Anwar Sep 10 '16 at 13:52
  • If I don't remove first I get dpkg: error processing archive tidy-5.2.0-64bit.deb (--install): trying to overwrite '/usr/lib/libtidy.so', which is also in package libtidy-0.99-0 20091223cvs-1.2ubuntu1.1 – Tom Hale Sep 18 '16 at 07:13
  • You accepted my answer, then wrote your own answer saying it didn't work in Linux mint, unaccepted after some days, then again accepted. Again unaccepted. Why? – Anwar Sep 18 '16 at 07:18
  • Sorry - I don't know why it was unaccepted twice. I didn't intentionally unaccept it in the last 2 days if that's what you're asking. Perhaps it was part of the edit process I did just now. I'm accepting this answer over yours because deals with overwrite '/usr/lib/libtidy.so' and shows where to get the latest version. – Tom Hale Sep 18 '16 at 07:28
  • Tom Hale, first link in your answer is dead and I can't find archive copy of it in Internet Archive and archive.is. Thanks. – Саша Черных Apr 22 '18 at 07:30
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    @СашаЧерных Updated. – Tom Hale Apr 22 '18 at 12:41
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  1. On the latest Ubuntus (Zesty, 17.04, and Artful, 17.10), it is updated to version 5.2.

  2. There is a backports ppa for Trusty (14.04) and Xenial (16.04): ppa:jonathonf/backports

  3. You could also use the nodejs package html-validator-cli as a workaround

    sudo -H npm install -g html-validator-cli
html-validator --filename=path/to/file

    but it needs an internet connection.

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