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Full Discussion: How to read and Split a file?
Top Forums Shell Programming and Scripting How to read and Split a file? Post 302886763 by Don Cragun on Monday 3rd of February 2014 01:02:00 PM
Old 02-03-2014
Quote:
Originally Posted by RudiC
That request will work only for files having exactly (n * 1000) + 150 records. Are you sure you can guarantee that condition? And, what if the file has 999 records?
Hi Rudi,
These questions have been asked before in this thread. The original poster hasn't supplied an answer yet even though this thread has been open for a week. The number of lines to be stored in the first, last, and other files keeps changing; but there is no explanation of why the last file shouldn't just contain what is left over after putting one requested number of lines in one file and splitting the remainder into another requested number of lines chunks.
 

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LEARN ABOUT NETBSD

split

SPLIT(1)						    BSD General Commands Manual 						  SPLIT(1)

NAME

     split -- split a file into pieces

SYNOPSIS

     split [-a suffix_length] [-b byte_count[k|m] | -l line_count -n chunk_count] [file [name]]

DESCRIPTION

     The split utility reads the given file and breaks it up into files of 1000 lines each.  If file is a single dash or absent, split reads from
     the standard input.  file itself is not altered.

     The options are as follows:

     -a      Use suffix_length letters to form the suffix of the file name.

     -b      Create smaller files byte_count bytes in length.  If 'k' is appended to the number, the file is split into byte_count kilobyte
	     pieces.  If 'm' is appended to the number, the file is split into byte_count megabyte pieces.

     -l      Create smaller files line_count lines in length.

     -n      Split file into chunk_count smaller files.

     If additional arguments are specified, the first is used as the name of the input file which is to be split.  If a second additional argument
     is specified, it is used as a prefix for the names of the files into which the file is split.  In this case, each file into which the file is
     split is named by the prefix followed by a lexically ordered suffix using suffix_length characters in the range ``a-z''.  If -a is not speci-
     fied, two letters are used as the suffix.

     If the name argument is not specified, 'x' is used.

STANDARDS

     The split utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     A split command appeared in Version 6 AT&T UNIX.

     The -a option was introduced in NetBSD 2.0.  Before that, if name was not specified, split would vary the first letter of the filename to
     increase the number of possible output files.  The -a option makes this unnecessary.

BSD
								   May 28, 2007 							       BSD
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