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Full Discussion: Finding & Moving Oldest File by Parsing/Sorting Date Info in File Names
Top Forums Shell Programming and Scripting Finding & Moving Oldest File by Parsing/Sorting Date Info in File Names Post 302219988 by joeyg on Wednesday 30th of July 2008 03:17:08 PM
Old 07-30-2008
Hammer & Screwdriver Here is a piece of it - I think anyway...
Assuming the file list is in a file already. (You could pipe the ls directly to the rest of the commands, if you were so inclined.)
Code:
> cat exp_contents 
job1_Friday_05302008.xml
job1_Monday_05262008.xml
job1_Monday_06022008.xml
job1_Thursday_05292008.xml
job1_Tuesday_06032008.xml
job1_Wednesday_05282008.xml

Now, try out the following command:
Code:
> cat exp_contents | tr "_" " " | awk '{print substr($3,5,4)"."substr($3,1,4)"|"$1"_"$2"_"$3}' | sort
2008.0526|job1_Monday_05262008.xml
2008.0528|job1_Wednesday_05282008.xml
2008.0529|job1_Thursday_05292008.xml
2008.0530|job1_Friday_05302008.xml
2008.0602|job1_Monday_06022008.xml
2008.0603|job1_Tuesday_06032008.xml

You can append to this a head -1 to get the top line.
You can also do a cut -d"|" -f2 to get the filename back for the oldest entry.

If this works, then the rest of the logic will flow much smoother.
 

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LEARN ABOUT CENTOS

hwloc-assembler

HWLOC-ASSEMBLER(1)						       hwloc							HWLOC-ASSEMBLER(1)

NAME

       hwloc-assembler - Assemble multiple XML topologies

SYNOPSIS

       hwloc-assembler [options] output.xml [--name <name1>] input1.xml [--name <name2>] input2.xml ...

OPTIONS

       -n --name <name>
	      Set <name> in the AssemblerName info attribute of the next input topology root to ease identification within the final global topol-
	      ogy.

       -f --force
	      Ignore errors while reading input files.

       -v --verbose
	      Verbose messages.

DESCRIPTION

       hwloc-assembler combines the input XML topologies and exports the resulting global topologies to a new XML file.  All inputs are  inserting
       as children of the global root object.  Each input topology root is annotated with info attributes before insertion.  AssemblerIndex is set
       to the index within the list of inputs.	AssemblerName is set to the name given with --name if any.  hwloc-assembler-remote offers a  fron-
       tend for assembling remote nodes topologies without having to manually gather and transfer each of them.

EXAMPLES

       To assemble two nodes topologies:

	   $ hwloc-assembler output.xml --name host1 host1.xml --name host2 host2.xml

RETURN VALUE

       Upon successful execution, hwloc-assembler returns 0.

       hwloc-assembler will return nonzero if any kind of error occurs, such as (but not limited to) failure to parse the command line.

SEE ALSO

       hwloc(7), lstopo(1), hwloc-assembler-remote(1)

1.7								   Apr 07, 2013 						HWLOC-ASSEMBLER(1)
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