Shell scripting Post: 302465356

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Homework and Emergencies Emergency UNIX and Linux Support Shell scripting Post 302465356 by DGPickett on Friday 22nd of October 2010 08:53:12 AM

10-22-2010

Registered User

You can make a sort of cheap xml parser of sed:

Code:

sed -n '
  s/.*<free-energy>\([^<]*\)<.*/\1/p
  t
  /<base-id>/{
    :loop
    N
    /<\/base-id-3p>/!b loop
    s/.*<position>\([^<]*\)<.*<position>\([^<]*\)<.*/\1 - \2/p
    t
    s/^/Malformed: /
    s/\n//g
    w /dev/tty
   }
 ' in_file1 in_file2 . . . .

Narrative: sed runs in no-output-but-explicit-print mode. When it finds the free-energy tag it extracts the content (everything after the tag to the next <), makes that the entire new buffer, prints it, and then, just a speedup, branches to end of script (get next line). When it finds the base-id tag, it gets the next line and loops collecting all lines to the base-id-3p end tag in the buffer, extracts the two poistions, drops them around the ' - ' as the entire new buffer, prints it, and then branches to end of script (get next line), but if there are not two position tags, it labels it as Malformed, makes it all one line, writes it to the tty (you can use a log file in batch situations).

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LEARN ABOUT SUSE

tracker-tag

tracker-tag(1)							   User Commands						    tracker-tag(1)

NAME

       tracker-tag - Add, remove and list tags.

SYNOPSIS

       tracker-tag [OPTION...] FILE [FILE...]

DESCRIPTION

       tracker-tag allows the caller add tags, remove tags and list tags by URN or to list all tags and the files associated with them.

       The FILE argument can be either a local path or a URI. It also does not have to be an absolute path.

OPTIONS

       -?, --help
	      Show summary of options.

       -l, --limit=N
	      Limit search to N results. The default is 512.

       -o, --offset=N
	      Offset the search results by N. For example, start at item number 10 in the results. The default is 0.

       -r, --or-operator
	      Use OR for search terms instead of AND (the default)

       -t, --list
	      List  all tags. Results include the number of files associated with that tag and the tag's unique identifier. You can show the files
	      associated with each tag by using --show-files.

       -s, --show-files
	      Show the files associated with each tag. This option is ONLY available WITH the --list option.

       -a, --add=TAG
	      Add a tag with the name TAG.  If no FILE arguments are specified, the tag is simply created (if it  didn't  already  exist)  and	no
	      files are associated with it. Multiple FILE arguments can be specified.

       -d, --delete=TAG
	      Delete  a tag with the name TAG.	If no FILE arguments are specified, the tag is deleted for ALL files. If FILE arguments are speci-
	      fied, only those files have the TAG deleted.

       -V, --version
	      Print version.

SEE ALSO

       tracker-store(1), tracker-sparql(1), tracker-search(1), tracker-info(1).

GNU
								     July 2009							    tracker-tag(1)