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Full Discussion: Split File based on number of rows
Top Forums Shell Programming and Scripting Split File based on number of rows Post 302925716 by kpk_ds on Wednesday 19th of November 2014 12:08:57 AM
Old 11-19-2014
Split File based on number of rows
Hi

I have a requirement, where i will receive multiple files in a folder (say: /fol1/fol2/). There will be at least 14 to 16 files. The size of the files will different, some may be 80GB or 90GB, some may be less than 5 GB (and the size of the files are very unpredictable). But the names of the files will be have a particular format like "Table1_Insert.dat" , Table1_Update.dat, Table1_delete.dat, Table2_ins.dat, Table2_upd.dat, Table2_del.dat... like this...

I have to read one file at a time, check the size of the file (in GB), if the file size is greater than 90 GB (file size wont be more than 100GB always), then split the files into 5GB. So if the file size is 90 GB, then it should split the source file into 18 sub files (like TT_table1_ins.dataa, TT_Table1_ins.datab , TT_Table1_ins.datac... etc)

I want my script to take only one input argument - just the file name (with the path).

I know we can do this using split -l command, but i need some help. Can somebody help me with a script. I'm very new to shell scripting. I can understand the commands but cannot write a script... Smilie

Thanks
 

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LEARN ABOUT SUNOS

unknown

UNKNOWN(1)						      General Commands Manual							UNKNOWN(1)

NAME

       unknown - identify possible genotypes for unknowns

SYNOPSIS

       A program to rapidly identify which genotypes are possible for individuals typed as unknowns in the input pedigree.

       unknown [ -cl ]

DESCRIPTION

       unknown infers possible genotypes and mating combinations for parents with unknown genotypes for ilink(1), mlink(1) and linkmap(1).

OPTIONS

       -c     Use conditional allele frequencies.

       -l     Choose a good set of loop breakers automatically.

RETURN VALUE

       0     Successful completion

ERRORS

       10    File not found
       255   Failure

EXAMPLES

       Normally, unknown(1) is run immediately prior to its sister programs, ilink(1), mlink(1) and linkmap(1), like this:

       unknown
       mlink

FILES

       unknown(1) reads the two files pedfile.dat and datafile.dat as its own input and produces various temporary files that are used as input to
       the next program. These temporary files are ipedfile.dat, upedfile.dat, speedfile.dat and newspeedfile.dat.

NOTES

       unknown(1) is part of the FASTLINK package, which is a re-implementation of the LINKAGE suite  of  computer  tools  that  help  investigate
       genetic linkage as first proposed G.M. Lathrop, J.M. Lalouel, C. Julier, and J. Ott.

AUTHORS

       Dylan Cooper, Alejandro Schaffer, and Tony Schurtz based on work originally by Jurg Ott, Ph.D, et. al.

       This manual page was written by Elizabeth Barham <lizzy@soggytrousers.net> for the Debian GNU/Linux system (but may be used by others).

WORD-WIDE-WEB
       http://www.ncbi.nlm.nih.gov/CBBResearch/Schaffer/fastlink.html

SEE ALSO

       ilink(1), linkmap(1), lodscore(1), mlink(1).

								  April 15, 2003							UNKNOWN(1)
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