This file is indexed.

/usr/share/plplot5.10.0/tcl/plplot.tcl is in plplot-tcl 5.10.0+dfsg2-0.1ubuntu2.

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
15
16
17
18
19
20
# Initialisation.  This file is automatically found and sourced by 
# either Pltcl_Init or Pltk_Init.  If it cannot be found or sourced, those
# procedures will throw an error.

# This file is sourced by the Plplot-Tcl Init function
# It should be used for any general purpose initialization
# There is no need to source lots of other files, since
# auto-loading should be used for that purpose

# Turn this on if you can't figure out if this is being sourced.
#puts "In plplot.tcl"

# When plplot is initialized dynamically from Tk, it will source
# this file.
lappend auto_path $pllibrary
set env(PL_LIB) $pllibrary
# Set up defaults (auto-loaded from the auto_path)
if {![catch {package present Tk}]} {
    catch {pldefaults}
}