This file is indexed.

/usr/share/pythia8-examples/examples/main13.cmnd is in pythia8-examples 8.1.80-1.

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
21
22
23
24
25
26
27
28
29
30
31
32
33
! main13.cmnd.
! This file contains commands to be read in for a Pythia8 run. 
! Lines not beginning with a letter or digit are comments.
! Names are case-insensitive  -  but spellings-sensitive!
! The settings here are illustrative, not always physics-motivated.

! 1) Settings used in the main program.
Main:timesAllowErrors = 3          ! how many aborts before run stops

! 2) Settings related to output in init(), next() and stat().
Init:showChangedSettings = on      ! list changed settings
Init:showChangedParticleData = off ! list changed particle data
Next:numberCount =   0             ! print message every n events, 0 = off
Next:numberShowLHA = 1             ! print LHA information n times
Next:numberShowInfo = 1            ! print event information n times
Next:numberShowProcess = 1         ! print process record n times
Next:numberShowEvent = 0           ! print event record n times

! 3) Other common settings.
6:m0 = 175.                        ! same m_t as Pythia 6.4 to compare

! 4) The number of subruns to execute.
Main:numberOfSubruns = 2

! 5) Information specific to the first subrun
Main:subrun = 1                    ! matches readFile( ..., 1)
Beams:frameType = 4                ! use LHEF input
Beams:LHEF = ttbar.lhe             ! first LHEF event file

! 6) Information specific to the second subrun
Main:subrun = 2                    ! matches readFile( ..., 2)
Beams:newLHEFsameInit = on         ! no reinitialization needed/wanted
Beams:LHEF = ttbar2.lhe            ! second LHEF event file