NAME

       ndselect - select lines and fields for numdiff

DESCRIPTION

       Usage: ndselect -h|--help|-v|--version   or

       ndselect  [-b N][-e N][-s N][-F N][-L N][-I N][-S IFS][-D DELIMS][-O OSEP][-x][-l PATH][-o
       PATH] [FILE]

       Print to standard output a subset of lines and fields from a given file.

       The argument after the options is the name of the file to read from.  The complete path of
       the  file  should  be  given,  a  directory  name  is  not  accepted.  If no input file is
       specified, the program reads from the standard input.

       Exit status: 0 in case of normal termination, -1 (255) in case of error

       -b, --beginning, --start=N

              Set to N the number of the first line to print (The default behavior  is  to  start
              with line number 1)

       -e, --end=N

              Set  to  N the number of the last line that can be printed (The default behavior is
              to arrive till to the end of the file)

       -s, --step=N

              Set to N the increment to use when selecting the lines to print (The default  value
              for the increment is 1)

       -F, --first-field=N

              Set  to  N the number of the first field to print (The default behavior is to start
              with field number 1)

       -L, --last-field=N

              Set to N the number of the last field that can be printed (The default behavior  is
              to arrive till to the end of every line)

       -I, --increment=N

              Set to N the increment to use when selecting the fields to print (The default value
              for the increment is 1)

       -S, --separators=IFS

              Specify the set of characters to use as delimiters while splitting the input  lines
              into fields (The default set of delimiters is space, tab and newline)

       -D, --delimiters=DELIMS

              Specify  the  set  of  strings to use as delimiters while splitting the input lines
              into fields (The default set of delimiters is space, tab and newline)

       -O, --output-separator=OSEP

              Specify the string to use as separator while writing the  selected  fields  to  the
              standard output (The default behavior consists in reusing

              the delimiters found in the input lines)

       -x, --omit-empty-lines

              Do not print empty lines

       -l, --warnings-to=PATH

              Redirect warning and error messages from stderr to the indicated file

       -o, --output=PATH

              Redirect output from stdout to the indicated file

       -h, --help

              Show this help message

       -v, --version

              Show version number, Copyright, Distribution Terms and NO-Warranty

COPYRIGHT

       Copyright  ©  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
       Ivano  Primi  <ivprimi@libero.it>  License  GPLv3+:  GNU  GPL  version  3  or  later,  see
       <http://gnu.org/licenses/gpl.html>.
       This  is free software: you are free to change and redistribute it.  There is NO WARRANTY,
       to the extent permitted by law.

SEE ALSO

       The full documentation for ndselect is maintained as a Texinfo manual.  If  the  info  and
       ndselect programs are properly installed at your site, the command

              info numdiff

       should give you access to the complete manual.