Help with understanding of alias Post: 302634827

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Need your help in understanding this

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LEARN ABOUT BSD

fsplit

FSPLIT(1)						      General Commands Manual							 FSPLIT(1)

NAME

       fsplit - split a multi-routine Fortran file into individual files

SYNOPSIS

       fsplit [ -e efile] ... [ file ]

DESCRIPTION

       Fsplit takes as input either a file or standard input containing Fortran source code.  It attempts to split the input into separate routine
       files of the form name.f, where name is the name of the program unit (e.g. function, subroutine, block data  or	program).   The  name  for
       unnamed	block  data  subprograms  has  the form blkdtaNNN.f where NNN is three digits and a file of this name does not already exist.  For
       unnamed main programs the name has the form mainNNN.f.  If there is an error in classifying a program unit, or if  name.f  already  exists,
       the program unit will be put in a file of the form zzzNNN.f where zzzNNN.f does not already exist.

       Normally  each  subprogram  unit  is split into a separate file.  When the -e option is used, only the specified subprogram units are split
       into separate files.  E.g.:
	    fsplit -e readit -e doit prog.f
       will split readit and doit into separate files.

DIAGNOSTICS

       If names specified via the -e option are not found, a diagnostic is written to standard error.

AUTHOR

       Asa Romberger and Jerry Berkman

BUGS

       Fsplit assumes the subprogram name is on the first noncomment line of the subprogram unit.  Nonstandard source formats may confuse fsplit.

       It is hard to use -e for unnamed main programs and block data subprograms since you must predict the created file name.

4.2 Berkeley Distribution					  April 29, 1985							 FSPLIT(1)