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Top Forums UNIX for Beginners Questions & Answers Split large file into smaller files without disturbing the entry chunks Post 303016522 by vgersh99 on Saturday 28th of April 2018 09:12:33 AM
Old 04-28-2018
Quote:
Originally Posted by Kamesh G
@Rudic, sorry that my post was misleading. Are you right, the input file should be split into 8 smaller files also maintaining the integrity of each chunk of lines in the input file.

-> Each of the 8 smaller output files should start with dn: and end with an empty line.
-> optimal position of a file break, It should be the "empty line" that is separating the input file chunks. the expected it to have the input file split into 8 smaller files without disturbing the order/integrity of each chunks.
Hmmm... I guess we'd need a descriptive definition of how the file should be split.
Each record/block starts with dn:
What logic did you use to split your sample file into 2 files you provided?
What decision did you make to start outputting chunks into small_file2?
 

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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] [-p pattern] [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. The options are as follows: -a suffix_length Use suffix_length letters to form the suffix of the file name. -b byte_count[k|m] 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 line_count Create smaller files n lines in length. -p pattern The file is split whenever an input line matches pattern, which is interpreted as an extended regular expression. The matching line will be the first line of the next output file. This option is incompatible with the -b and -l options. 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, the file is split into lexically ordered files named with the prefix ``x'' and with suffixes as above. ENVIRONMENT
The LANG, LC_ALL, LC_CTYPE and LC_COLLATE environment variables affect the execution of split as described in environ(7). EXIT STATUS
The split utility exits 0 on success, and >0 if an error occurs. SEE ALSO
csplit(1), re_format(7) STANDARDS
The split utility conforms to IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
A split command appeared in Version 3 AT&T UNIX. BUGS
The maximum line length for matching patterns is 65536. BSD
August 21, 2005 BSD
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