Provided by: numdiff_5.9.0-1_amd64
ndselect - select lines and fields for numdiff
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 © 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Ivano Primi <firstname.lastname@example.org> 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.
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.