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Full Discussion: How do we change the default font on Linux system?
Operating Systems Linux How do we change the default font on Linux system? Post 303042404 by mohtashims on Monday 23rd of December 2019 09:15:33 PM
Old 12-23-2019
Quote:
Originally Posted by Neo
lsb_release has little to do with fonts, as you know.

So, if "you messed your default fonts up", I don't think it was because you decided to installing lsb_release.

On the other hand, using apt, I have never installed with apt using a wildcard (*) like you show in your post .

Was that a typo in your reply?

Anyway, you are running CentOS.

So, for CentOS, I think you can change the default system font by adding the <prefer> directive to your fonts.conf file.

You might want to investigate that. I saw on the net where many people change their default system fonts on CentOS using the <prefer> or <default> directive:



Frankly, I don't change system fonts on my servers; and when I login remotely (everyday), I change the console fonts using the terminal program (I use Roboto and Anonymous Pro fonts) not with the system fonts.

Anyway, I not really very helpful on this, so I think you can easily Google around about how to change the default system font in CentOS and make good progress.

In closing, I would like to caution you about saying "changing fonts on Linux system" (as in the title of this discussion you posted).

Linux, defines only the kernel. The operating environment is defined by the distribution (in your case CentOS). Linux is the kernel, everything else falls under the actual distribution.

Your issue changing system fonts is a CentOS issue, not a Linux issue, per se. Linux is the kernel, not the "distribution".

Hope this helps.
Moving ahead with the suggestion i seek help from this article: How To Set Default Fonts and Font Aliases on Linux

Created the config file ~/.config/fontconfig/fonts.conf

Code:
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>

<!-- Set preferred serif, sans serif, and monospace fonts. -->
  <alias>
    <family>sans-serif</family>
    <prefer><family>lyx</family></prefer>
  </alias>

  <match>
    <test name="family"><string>St Ryde Regular</string></test>
    <edit name="family" mode="assign" binding="strong">
      <string>lyx</string>
    </edit>
  </match>

</fontconfig>

Then i reloaded the font-cache using the command fc-cache -fv

I then used check.sh script which has the below code to get the Default fonts:

Code:
for family in serif sans-serif monospace Arial Helvetica Verdana "Times New Roman" "Courier New"; do
  echo -n "$family: "
  fc-match "$family"
done

Output:
Code:
# ./check.sh
serif: NimbusRoman-Regular.otf: "Nimbus Roman" "Regular"
sans-serif: DejaVuSans.ttf: "DejaVu Sans" "Book"
monospace: NimbusMonoPS-Regular.otf: "Nimbus Mono PS" "Regular"
Arial: NimbusSans-Regular.otf: "Nimbus Sans" "Regular"
Helvetica: NimbusSans-Regular.otf: "Nimbus Sans" "Regular"
Verdana: DejaVuSans.ttf: "DejaVu Sans" "Book"
Times New Roman: NimbusRoman-Regular.otf: "Nimbus Roman" "Regular"
Courier New: NimbusMonoPS-Regular.otf: "Nimbus Mono PS" "Regular"

The output still says my default is Dejavu instead of the below:
Code:
fc-list | grep -i /usr/share/fonts/lyx/StRydeRegular.ttf
/usr/share/fonts/lyx/StRydeRegular.ttf: St Ryde,St Ryde Regular:style=Regular

Can you please suggest what could be the issue in my configuration ?

--- Post updated at 11:11 PM ---

The issue is resolve my making the following changes (changing lyx to St Ryde):

Code:
cat ~/.config/fontconfig/fonts.conf
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>

<!-- Set preferred serif, sans serif, and monospace fonts. -->
  <alias>
    <family>sans-serif</family>
    <prefer><family>St Ryde</family></prefer>
  </alias>

  <match>
    <test name="family"><string>St Ryde Regular</string></test>
    <edit name="family" mode="assign" binding="strong">
      <string>St Ryde</string>
    </edit>
  </match>

</fontconfig>

I change lyx to St Ryde as you can see above.

What i still wish to know how do i know the family of a font given a .ttf file ?

In this case the family was St Ryde but that was more so a guess. Can you tell me the correct place to see the family given the .ttf file ?

Also, the /usr/share/fonts/lyx: skipping, looped directory detected message persists while I was able to change the default font. hence, i guess troubleshooting that was irrelevant.

By the way ... thank you Neo for all your help ... appreciated.
 

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