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Full Discussion: Looping through input/output
Top Forums UNIX for Beginners Questions & Answers Looping through input/output Post 302979877 by zajtat on Saturday 20th of August 2016 06:44:52 PM
Old 08-20-2016
Hi,

The syntax for the combining.executable is correct and it would not put the data from infile3 in front of the infile2 in outfile2. The excitable will add columns from infile3 to the end of outfile1. I've used the syntax to illustrate that the outcome of one command should be the input for the other.

I'm sorry, but your interpretation of the commands is not correct. We do not need to keep outfile1 through outfile6000, we just need outfile1 to be input for the executable in order to generate outfile2, then outfile1 can be deleted. Outfile2 will be the input for the executable to generate outfile3. Then outfile2 can be deleted and outfile3 can be used as input to generate outfile4, etc.

I may not need a master file or the loop, it was just the way I tried to solve the problem. But it does not necessarily have to be the case. The point is that I need to run a program (executable) where the output of step1 is the input of step2, and the output of step2 is the input for step 3, etc.

The format of my input files is text. They are the only ones in the folder.
The name of the output files does not matter.
 

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invcutter(1)						      General Commands Manual						      invcutter(1)

Name
       invcutter - generate subset inventory files

Syntax
       /usr/sys/dist/invcutter [ -d ] [ -f root-path ] [ -f version-code ]

Description
       The  command  reads master inventory records from standard input.  A subset inventory record is written to standard output for every record
       read from the input. The information contained in the output record is derived from the input record and the file attribute information	in
       the file hierarchy rooted in the current directory.

Options
       -d		   Enable debugging. No useful diagnostics are printed.

       -f root-path	   Specify an alternate root path for finding file attribute information.

       -v version-code	   Specify a 3-digit version code for use in the version field of the output records. The default version code is 010.

Restrictions
       All input records must be sorted in ascending order on the pathname field.

       Files described in an input record which exist as sockets in the file hierarchy are not processable.

       If a file is described in an input record has a link count greater than 1, all other links to the file must be represented in the input.

Examples
       The following command will generate inventory records for the master inventory entries in PDS020.mi containing version fields set to 020:
	   invcutter -v 020 < PDS020.mi

Return Values
       An exit status of 0 is returned if all goes well. An exit status of 1 is returned if an error occurs. See Diagnostics.

Diagnostics
       "cannot chdir to pathname (error-message)"
       The  program  cannot  change  directories to the pathname directory specified with the -f option. The error-message will provide additional
       information.

       "sort error, record #n"
       The nth input record is not in the correct sort order. All input records must be in ascending  ASCII  colating  sequence  on  the  pathname
       field.

       "cannot stat filename (error-message)"
       An error has occurred attempting to read the attributes of filename.  The error-message explains exactly what happened.

       "pathname: illegal file type code 0140000"
       The file pathname is a socket. Sockets are not supported as valid file types for distribution.

       "unresolved nlink n: pathname"
       This indicates that file pathname in the master inventory is linked to n files which do not appear in the master inventory. Check inventory
       for validity with the program.

       "n unresolved hard links"
       This is an informational message stating how many files were detected in the input inventory which had unresolved links.

See Also
       newinv(1), stl_inv(5), stl_mi(5)
       Guide to Preparing Software for Distribution on ULTRIX Systems

																      invcutter(1)
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