9

The normal method for checking where a TeX-related file is employs kpsewhich, for example

kpsewhich latex.ltx

and the command line returns something like

<installation root>/texlive/<year>/texmf-dist/tex/latex/base/latex.ltx

However, trying the same for a .fmt file gives no output. What is the correct approach?

14

You need to tell kpswhich the binary which it should 'act like' to find format files. For example, for pdfTeX one might do

kpsewhich -engine=pdftex latex.fmt

to yield for example

<install root>/texlive/<year>/texmf-var/web2c/pdftex/latex.fmt

or for any engine with

kpsewhich -engine=/ latex.fmt

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