=============================================================================    - perform various system checks

This program is intended to be helpful for figuring out AFNI installation


   1. -check_all
   2a. -find_prog python
   2b. -find_prog python -exact yes
   3a. -disp_R_ver_for_lib $R_LIBS
   3b. -disp_abin

terminal options:

   -help                : show this help
   -help_dot_files      : show help on shell setup files
   -help_rc_files       : SAME
   -hist                : show program history
   -show_valid_opts     : show valid options for program
   -todo                : show current todo list
   -ver                 : show current version

   NOTE: either a terminal or an action option is required

action options:

   -check_all           : perform all system checks
                          - see section, "details displayed via -check_all"
   -disp_num_cpu        : display number of CPUs available
   -disp_R_ver_for_lib  : display the R version used when building an R library
                          - this refers to those installed by rPkgsInstall,
                            most likely under $R_LIBS
   -disp_abin           : display directory containing 'afni' (or this)
   -disp_ver_afni       : display AFNI package version (else "None")
   -disp_ver_matplotlib : display matplotlib version (else "None")
   -disp_ver_pylibs LIB LIB ... :
                          display versions of given python libraries (else NONE)
                          - use 'ALL' to include the default test list
   -dot_file_list       : list all found dot files (startup files)
   -dot_file_show       : display contents of all found dot files
   -dot_file_pack NAME  : create a NAME.tgz package containing dot files
   -find_prog PROG      : search PATH for PROG
                          - default is *PROG*, case-insensitive
                          - see also -casematch, -exact

other options:

   -casematch yes/no    : match case in -find_prog
   -data_root DDIR      : search for class data under DDIR
   -exact yes/no        : search for PROG without wildcards in -find_prog
   -use_asc_path        : prepend ASC dir to PATH
                          (to test programs in same directory as
   -verb LEVEL          : set the verbosity level

details displayed via -check_all (just run to see):

   general information:
      - CPU, operating system and version, # CPUs, login shell

   AFNI and related tests:
      - which afni, python, R and tcsh, along with versions
      - check for multiple afni packages in PATH
      - check that various AFNI programs run
      - check for AFNI $HOME dot files (.afnirc, .sumarc, etc.)

   python libs:
      - check that various python libraries are found and loaded

   environment vars:

   evaluation of dot files:
      - show the output of "init_user_dotfiles -test", restricted
        to shells of interest (user shells plus tcsh)

   data checks:
      - check for AFNI bootcamp data directories and atlases

   OS specific:
      - on linux, check for programs and version of dnf, yum
      - on macs, check for homebrew, fink, flat_namespace, etc.

   final overview:
      - report anything that seems to need fixing for a bootcamp
        (details shown earlier)

R Reynolds    July, 2013