This file is indexed.

/usr/share/doc-base/gfortran-7 is in gfortran-7-doc 7.3.0-16ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
Document: gfortran-7
Title: The GNU Fortran Compiler 
Author: Various
Abstract: This manual documents how to run, install and port `gfortran',
 as well as its new features and incompatibilities, and how to report bugs.
Section: Programming/Fortran

Format: html
Index: /usr/share/doc/gcc-7-base/fortran/gfortran.html
Files: /usr/share/doc/gcc-7-base/fortran/gfortran.html

Format: info
Index: /usr/share/info/gfortran-7.info.gz
Files: /usr/share/info/gfortran-7*