Provided by: gnuastro_0.11-1build1_amd64 bug


       astscript-sort-by-night - Sort input FITS files by night


       astscript-sort-by-night [OPTION] FITS-files


       This script is part of GNU Astronomy Utilities 0.11.

       This  script  will  look into a HDU/extension for a header keyword in the given FITS files
       and interpret the value as  a  date.  The  inputs  will  be  separated  by  "night"s.  The
       definition a "nights" is set with the '--hour' option (just note that the FITS time may be
       recorded in UTC, not local time)! It will then print a list of all the input  files  along
       with  the  following  two  columns:  night number and file number in that night (sorted by
       time). With '--link' a symbolic link  (one  for  each  input)  will  be  made  with  names
       including the night classifier. With '--copy' instead of a link, a copy of the inputs will
       be made.

       For more information, please run any of the following commands. In  particular  the  first
       contains  a very comprehensive explanation of this script's invocation: expected input(s),
       output(s), and a full description of all the options.

       Inputs/Outputs and options:
              $ info astscript-sort-by-night

       Full Gnuastro manual/book:
              $ info gnuastro

       If you couldn't find your answer in the manual, you can get direct help  from  experienced
       Gnuastro users and developers. For more information, please run:

              $ info help-gnuastro

   astscript-sort-by-night options:

       -h, --hdu=STR
              HDU/extension of all input FITS files.

       -k, --key=STR
              Header keyword specifying date to use.

       -H, --hour=FLT
              Hour  in  next  day  to  be  included  in  night.  Be aware of time zones with this


       -l, --link
              list of inputs with night and file number.

       -c, --copy
              Copy the files, don't make symbolic links.

       -p, --prefix=STR
              Prefix for outputs of '--copy' and '--link'.

              Operating mode:

       -h, --help
              Print this help list.

       --cite BibTeX citation for this program.

       -q, --quiet
              Don't print the list.

       -V, --version
              Print program version.

       Mandatory or optional arguments to long options are also mandatory  or  optional  for  any
       corresponding short options.

       GNU Astronomy Utilities home page:


       Report bugs to


       Copyright  © 2015-2019, Free Software Foundation, Inc.  License GPLv3+: GNU General public
       license version 3 or later.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.

       Written/developed by Mohammad Akhlaghi


       The  full documentation for astscript-sort-by-night is maintained as a Texinfo manual.  If
       the info and astscript-sort-by-night programs are properly installed  at  your  site,  the

              info astscript-sort-by-night

       should give you access to the complete manual.