`.

I don't think that's a good idea, mind you.  But when I found the `authorized_keys.d` directory in CoreOS, the first place I went was the ssh and sshd documentation, and the second place was `sshd_config` where I half *expected* to find a shell command as described above.
      program geos2fv

c****6***0*********0*********0*********0*********0*********0**********72
C Program to convert GEOS-2 A-grid data on sigma coordinate to
C The hybrid sigma-P Eulerian coordinate coordinate for the
C finite-volume GCM

C The terrain and the IC for the fv-GCM must be 64-bit precision.

C Must compile with "f90 -O -r8" if FVGCM restart is desired; -r8 no
C longer necessary for grads or GFIO output (Arlindo) 
C Programmer : <NAME>, Code 910.3, NASA/GSFC, with revisions by <NAME>
C Last modified: July 21, 1999

c The terrain data can be found on our machines at nas

c /share/fvgcm/surf.data_144x91           for 2x2.5
c /share/fvgcm/surf.data_288x181              1x1.25
c /share/fvgcm/surf.data_576x361              0.5x0.625
c
c REVISION HISTORY:
c
c dark ages  <NAME>    Initial code.
c
c 10oct1999  <NAME>  Changed some real*8 into real for having the option of
c                      compiling with 32 bits (otherwise it does not on my 
c                      linux box).  When compiled in 32-bits the
c                      restart option does not produce a valid output file.
c
c 02nov1999  <NAME>  Started conversion to read GEOS-DAS HDF files
c                      written by GFIO. GEOS levels are still hardwired 
c                      in the main program butb get_geos2() now uses
c                      dynamic allocation according to input file.
c
c 09nov1999  <NAME>  Reading of SST for dyn vect.
c 06dec1999  <NAME>  Better defaults for sst/surf file names.
c 18dec1999  <NAME>  Introduced f77 interface of dyn_init()
c 20apr2001  <NAME>  Added option of sst fname = 'NONE', setting sst
c                      to 288 K in this case.
c
c****6***0*********0*********0*********0*********0*********0**********72

      use m_dyn          ! dynamics state vector

      implicit      none

      type(dyn_vect) w_f

      integer rc


C Output horizontal resolution:

      integer imr, jmr
      integer jnp, nl

      parameter  (imr=144, jmr=90)
c     parameter  (imr=288, jmr=180)
c     parameter  (imr=576, jmr=360)
      parameter  (jnp = jmr+1)

C Output vertical resolution
c     parameter(nl=32)
      parameter(nl=55)

C Original data vertical resolution: For GEOS 48 and 70 layrs just
C   set olev below - no other change necessary (ams)

      integer plev
c     parameter (plev=55)
c     parameter (plev=70)
      parameter (plev=48)  

C Note: there are a few other hard-wired parameter statement that set the horizontal
C resolution. (For example, in plft2d and lpft)


C Input/output units:

      integer iuhs               !unit to read terrain data for the fv
      integer iuic               !unit to write IC for f-v dycore
      parameter (iuhs = 80)
      parameter (iuic = 81)

      integer it
      integer nymd, nhms, nstep

      include 'geos2fv.h'

c =================
c Dynamical fields:
c =================

      real     u(imr,jnp,nl)    !zonal wind on D-grid
      real     v(imr,jnp,nl)    !meridional wind
      real    pt(imr,jnp,nl)    !scaled virture potential temperature
      real     q(imr,jnp,nl,1)  !specific humidity & tracer mixing ratios
      real  delp(imr,jnp,nl)    !pressure thickness in pascal

      real   pe1(imr,nl+1)      !pressure at layer edges
      real    ps(imr, jnp)      !surface pressure (pascal)

      real    ts(imr, jnp)      ! sea surface temperature
      real   lwi(imr, jnp)      ! land-water-mask for dyn_vect

      real  ud(imr,jnp)         !D-grid zonal wind
      real  vd(imr,jnp)         !D-grid meridional wind
      real*8  hs8(imr,jnp)      !surface geopotential
      real*8  stdv8(imr,jnp)      !surface geopotential stdv
      real    hs(imr,jnp)      !surface geopotential
      real  phis(imr,jnp)       !surface geopotential
      real  stdv(imr,jnp)       !surface geopotential stdv

C Eta coordinate arrays and constants

      real ak(nl+1)
      real bk(nl+1)
      real ptop                 !pressure at model top
      real pint                 !Interface pressure
      integer ks                !number of layers in pure p region

      real ps2(imr, jnp)
      real uwnd(imr,jnp,plev)
      real vwnd(imr,jnp,plev)
      real tmpu(imr,jnp,plev)
      real sphu(imr,jnp,plev)

      real  pe2(imr, plev+1, jnp)
      real phis2(imr,jnp)

      real u2(imr,plev)
      real v2(imr,plev)
      real q2(imr,plev)

      real pk2(imr,plev+1)
      real peln(imr,plev+1)
      real pkz2(imr,plev)
      real ph2(imr,plev+1)
      real  t2(imr,plev)

      real q_new(imr,nl)

      integer i,j,k

      integer fid, err, im, jm, km, lm, nvars, ngatts

      real grav
      real rh2o
      real rair
      real zvir
      real cappa
      real cpair
!ams  real*8 rkap
!ams  real*8 r8tmp
      real   rkap
      real   r8tmp

      real pmax, pmin, vmax
      real diff(imr, jnp)
      real dlp, beta

      real dp1(imr, nl)
      real dp2(imr, plev)
      integer npt
      logical geos2


      geos2 =.true.

c     Get file names and dates from command line
c     ------------------------------------------
	call parse_cmd ( nymd, nhms, imr, jnp, nstep )

C Hard wired year/date

C get geos-2 data


C Constants:

        grav   = 9.80616
        rh2o   = 4.61e2
        rair   = 287.04
        zvir   = rh2o/rair - 1.
        cpair  = 1004.64
        cappa  = rair/cpair
        rkap   = cpair/rair

        write(6,*) 'grav=',grav,' zvir=',zvir,' cappa=',cappa
        write(6,*) 'rkap=', rkap
        write(6,*)''

C get SST if writing GFIO file
       if ( ftype.eq. GFIO ) then

        if ( trim(sfname).ne. 'NONE' ) then


         call GFIO_Open ( trim(sfname), READ_ONLY, fid, err )
         if ( err.ne. 0 ) then
            print *, 'geos2fv: cannot open SST file '//trim(sfname)
            stop
         endif

         call GFIO_DimIn