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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 DEBIAN

g_principal

g_principal(1)					 GROMACS suite, VERSION 4.5.4-dev-20110404-bc5695c				    g_principal(1)

NAME

       g_principal - calculates axes of inertia for a group of atoms

       VERSION 4.5.4-dev-20110404-bc5695c

SYNOPSIS

       g_principal  -f	traj.xtc  -s topol.tpr -n index.ndx -a1 axis1.dat -a2 axis2.dat -a3 axis3.dat -om moi.dat -[no]h -[no]version -nice int -b
       time -e time -dt time -tu enum -[no]w -[no]foo

DESCRIPTION

	g_principal calculates the three principal axes of inertia for a group of atoms.

FILES

       -f traj.xtc Input
	Trajectory: xtc trr trj gro g96 pdb cpt

       -s topol.tpr Input
	Structure+mass(db): tpr tpb tpa gro g96 pdb

       -n index.ndx Input, Opt.
	Index file

       -a1 axis1.dat Output
	Generic data file

       -a2 axis2.dat Output
	Generic data file

       -a3 axis3.dat Output
	Generic data file

       -om moi.dat Output
	Generic data file

OTHER OPTIONS

       -[no]hno
	Print help info and quit

       -[no]versionno
	Print version info and quit

       -nice int 19
	Set the nicelevel

       -b time 0
	First frame (ps) to read from trajectory

       -e time 0
	Last frame (ps) to read from trajectory

       -dt time 0
	Only use frame when t MOD dt = first time (ps)

       -tu enum ps
	Time unit:  fs,  ps,  ns,  us,	ms or  s

       -[no]wno
	View output  .xvg,  .xpm,  .eps and  .pdb files

       -[no]foono
	Dummy option to avoid empty array

SEE ALSO

       gromacs(7)

       More information about GROMACS is available at <http://www.gromacs.org/>.

								  Mon 4 Apr 2011						    g_principal(1)
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