How To Install texlive-iftex on CentOS 8

texlive-iftex is Am I running under pdfTeX, XeTeX or LuaTeX?

Introduction

In this tutorial we learn how to install texlive-iftex on CentOS 8.

What is texlive-iftex

The package, which works both for Plain TeX and for LaTeX, defines the \ifPDFTeX, \ifXeTeX, and \ifLuaTeX conditionals for testing which engine is being used for typesetting. The package also provides the \RequirePDFTeX, \RequireXeTeX, and \RequireLuaTeX commands which throw an error if pdfTeX, XeTeX or LuaTeX (respectively) is not the engine in use.

We can use yum or dnf to install texlive-iftex on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install texlive-iftex.

Install texlive-iftex on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install texlive-iftex using dnf by running the following command:

sudo dnf -y install texlive-iftex

Install texlive-iftex on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install texlive-iftex using yum by running the following command:

sudo yum -y install texlive-iftex

How To Uninstall texlive-iftex on CentOS 8

To uninstall only the texlive-iftex package we can use the following command:

sudo dnf remove texlive-iftex

texlive-iftex Package Contents on CentOS 8

/usr/share/licenses/texlive-iftex
/usr/share/licenses/texlive-iftex/lppl1.3.txt
/usr/share/texlive/texmf-dist/doc/generic/iftex
/usr/share/texlive/texmf-dist/doc/generic/iftex/README
/usr/share/texlive/texmf-dist/doc/generic/iftex/iftex.pdf
/usr/share/texlive/texmf-dist/doc/generic/iftex/iftex.tex
/usr/share/texlive/texmf-dist/tex/generic/iftex
/usr/share/texlive/texmf-dist/tex/generic/iftex/iftex.sty

References

Summary

In this tutorial we learn how to install texlive-iftex on CentOS 8 using yum and dnf.