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Top Forums UNIX for Dummies Questions & Answers split files into specified number of output files Post 302194540 by era on Tuesday 13th of May 2008 06:46:31 AM
Old 05-13-2008
It's not really clear why you can't use the variable. The way it is now, I don't think it contains a useful value (what does the echo print for you?) but fixing the scripts so it works sounds like the best plan unless you can explain why it "simply doesn't work".

Assuming $x is the name of the file you are about to split, try something like this instead.

Code:
y=`wc -l < $x | awk '{ print 1+int($1/50) }'`

I put in the addition of one on the theory that this should do something vaguely useful even with files which are too small, with a slight bias towards making the last file in the series smaller than the others. (Maybe divide by 49 instead to compensate?)
 

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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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