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Full Discussion: AWK pattern matching, first and last
Top Forums Shell Programming and Scripting AWK pattern matching, first and last Post 302152935 by smb_uk on Saturday 22nd of December 2007 09:16:35 AM
Old 12-22-2007
This solution loses the ability to handle the tags in a custom manner, it simply displays what's already there in a different format, although maybe I should have pointed that requirement out earlier.

Also, I still have the issue of not being able to return only the last #M,M# tag.

In summary, what I want to do is get the /*H, H## section, and individually retrieve tags within this block, choosing all, the first or the last (or nth/-nth if possible) of the tag (e.g. only the modification on the 15th).
 

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LEARN ABOUT DEBIAN

pfstag

pfstag(1)						      General Commands Manual							 pfstag(1)

NAME

       pfstag - Set or remove tags to/from pfs stream

SYNOPSIS

       pfstag [--set [channel:]name=value] [--remove [channel:]name]

DESCRIPTION

       Use  this  command to set or remove tags from the pfs-stream. Tags are used to add additional information to pfs frames and they are in the
       format: 'name=value'. To learn more about tags, read 'Specification of the PFS File Format'.

       Tags are set/removed to/from all pfs frames in the stream.

       Note that currently only OpenEXR file format supports tags.

OPTIONS

       --set [channel:]name=value], -s [channel:]name=value], --add [channel:]name=value]
	      Change existing or add a new tag of the given name. If no channel is given, tags are added to the frame.

       --remove [channel:]name], -r [channel:]name]
	      Remove tag of the given name. Ignore if the tag does not exist. If no channel is given, tags are removed from the frame.

EXAMPLES

       pfsin memorial.hdr | pfstag --add "EXTRA_INFO=foo" | pfsout memorial_ei.exr

	      Add tag "EXTRA_INFO=foo" to the memorial image and save it as memorial_ei.exr.

SEE ALSO

       pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de>.

																	 pfstag(1)
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