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Full Discussion: Looping through input/output
Top Forums UNIX for Beginners Questions & Answers Looping through input/output Post 302979882 by zajtat on Saturday 20th of August 2016 08:30:52 PM
Old 08-20-2016
I'm sorry my explanations were not clear.

The executable command takes the columns of file specified in argument 1 (infile1) and adds them to the file specified in argument 2 (infile2). It creates a new file that starts with columns from infile2, followed by columns from infile1. So, the first command line is:

combining.executable infile1 infile2 > outfile1

This will take infile2 as the basis and add columns to it from infile1. The outfile1 will start with columns from infile2 and finish with columns from infile1.

The we run the following command:

combining.executable infile3 outfile1 > outfile2

This will take the columns from the file specified as argument 1 (infile3) and add them to the file specified in the argument 2 (outfile1). It is the same procedure as in step1, so the program does the same thing, nothing changes. The resulting outfile2 will start with columns from outfile1 and finish with columns from infile3. So, all 3 files are combined and nothing is deleted/replaced.

For the next step, we'll need outfile2 and infile4. So, we can delete the outfile1 as its info is now in outfile2. And so on...

This is your next question:

What is the format of the real names of your input files? (Please show us the actual names of your 1st input file and your last input file.)

The answer: the files are simple text files, here is the name of my first input file:

9464294024_R01C01header

and the last file name is:

9479475073_R12C02header

here is a small subsample of the files:

Code:
9464294024_R01C01header  9477371149_R12C02header  9477871078_R06C01header  9477875165_R03C01header  9477885102_R05C01header  9479475073_R10C02header
9464294024_R01C02header  9477371157_R01C01header  9477871078_R06C02header  9477875165_R03C02header  9477885102_R05C02header  9479475073_R11C01header

Next question: And, is the number of input files a constant?

I'm not sure I understand this question. There is exactly 5427 files than need to be combined into one.

Next question: And, what name do you really want for your output file?

The name of the output file does not really matter for me. It can be anything as long as it contains the columns of all the 5427 files combined into one text file.

Many thanks!
Last edited by Don Cragun; 08-20-2016 at 09:53 PM.. Reason: Change ICODE tags to CODE tags for long data lines.
 

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LEARN ABOUT ULTRIX

comb

comb(1) 						      General Commands Manual							   comb(1)

Name
       comb - combine delta versions of SCCS file

Syntax
       comb [-o] [-s] [-psid] [-clist] files

Description
       The  command  generates	a shell procedure which, when run, will reconstruct the given SCCS files.  For further information, see The recon-
       structed files are generally smaller than the original files.  The arguments may be specified in any order,  but  all  keyletter  arguments
       apply  to  all  named  SCCS  files.   If a directory is named, behaves as though each file in the directory were specified as a named file,
       except non-SCCS files (last component of the path name does not begin with s.)  and unreadable files, which are	silently  ignored.   If  a
       name of - is given, the standard input is read; each line of the standard input is taken to be the name of an SCCS file to be processed.

       The generated shell procedure is written on the standard output.

       Each  keyletter	argument  is  explained  as though only one named file is to be processed, but the effects of any keyletter argument apply
       independently to each named file.

Options
       -clist	 Preserves specified deltas.  See for the syntax of a list.  All other deltas are discarded.

       -o	 Causes the reconstructed file to be accessed at the release of the delta to be created.  Otherwise the reconstructed  file  would
		 be  accessed  at the most recent ancestor.  Use of the -o keyletter may decrease the size of the reconstructed SCCS file.  It may
		 also alter the shape of the delta tree of the original file.

       -pSID	 Indicates oldest delta to be preserved.  All older deltas are discarded in the reconstructed file.

       -s	 Generates a shell procedure which produces a report.  This report gives the file name, size (in blocks) after combining, original
		 size (also in blocks), and percentage change computed by:
							      100 * (original - combined) / original
		 It  is   recommended  that  before any SCCS files are actually combined, one should use this option to determine exactly how much
		 space is saved by the combining process.

       If no keyletter arguments are specified, will preserve only leaf deltas and the minimal number of ancestors needed to preserve the tree.

Restrictions
       The command may rearrange the shape of the tree of deltas.  It may not save any space; in fact, it is possible for the  reconstructed  file
       to actually be larger than the original.

Diagnostics
       See for explanations.

Files
       s.COMB	     The name of the reconstructed SCCS file.
       comb?????     Temporary.
See Also
       admin(1), delta(1), get(1), help(1), prs(1), sccs(1), sccsfile(5)
       Guide to the Source Code Control System

																	   comb(1)
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