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Full Discussion: awk comparison with two patterns
Top Forums Shell Programming and Scripting awk comparison with two patterns Post 302789113 by ibanezpete on Wednesday 3rd of April 2013 06:05:43 AM
Old 04-03-2013
awk comparison with two patterns
Here is my list, which contains URLs for file downloads:

Code:
//servername.com/version/panasonic1,1_1.1.1
//servername.com/version/panasonic3,1_6.7.1
//servername.com/version/panasonic3,2_6.8
//servername.com/version/panasonic2,6_3.0.2
//servername.com/version/panasonic3,1_7.1.3
//servername.com/version/panasonic2,6_3.0.4

This list been acquired using curl and saved to a text file. The file is used as input for wget and the files are downloaded into a specified directory. I have worked out the curl and wget syntax and have working lines of code.

However I don't need to download all of the files listed in the text file as some are older versions of software for a particular models of hardware.

From the text above models are defined by model,revision (x,x) and the software versions are in the form major.minor.revision (x.x.x) or sometimes major.minor (x.x).

From my reading of the boards and limited knowledge of awk I need to isolate the (model,revision) patterns

Code:
 awk 'BEGIN{FS="/p"; OFS="_"}

and use an if statement to print those which are unique. But where there are other lines which match compare by the version numbers, which means I'll need to redefine FS and OFS to isolate the second pattern.

Code:
{FS=OFS="_"}

The comparison will then only print lines that have the latest software version. From the example lines above that would be:

Code:
//servername.com/version/panasonic1,1_1.1.1
//servername.com/version/panasonic3,2_6.8
//servername.com/version/panasonic3,1_7.1.3
//servername.com/version/panasonic2,6_3.0.4

I think awk is up to the task but my knowledge of it is not. Any ideas would be much appreciated!
Last edited by Scrutinizer; 04-06-2013 at 05:24 PM.. Reason: Changed all icode tags to code tags
 

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LEARN ABOUT SUSE

xfsinfo

XFSINFO(1)						      General Commands Manual							XFSINFO(1)

NAME

       xfsinfo - X font server information utility

SYNOPSIS

       xfsinfo [-server servername]

DESCRIPTION

       Xfsinfo is a utility for displaying information about an X font server.	It is used to examine the capabilities of a server, the predefined
       values for various parameters used in communicating between clients and the server, and the font catalogues and alternate servers that  are
       available.

OPTIONS

       -server servername
	      This  option  specifies the X font server to contact.  servername must be specified in one of the formats defined in the Font Server
	      Names section of X(7).   If not specified, the server name in the FONTSERVER environment variable is used.

HISTORY

       Xfsinfo was originally called fsinfo.  It was renamed to avoid a clash with the fsinfo utility from the Berkeley automounter amd.

EXAMPLE

       The following shows a sample produced by xfsinfo.

       example% xfsinfo -server hansen:7100
       name of server:	   hansen:7100
       version number:	   1
       vendor string: Font Server Prototype
       vendor release number:	17
       maximum request size:	16384 longwords (65536 bytes)
       number of catalogues:	1
	    all
       Number of alternate servers: 2
	   #0	 hansen:7101
	   #1	 hansen:7102
       number of extensions:	0

ENVIRONMENT

       FONTSERVER
	       To get the default fontserver.  The server name must be specified in one of the formats defined in the Font Server Names section of
	       X(7).

SEE ALSO

       xfs(1), fslsfonts(1), X(7).

AUTHOR

       Dave Lemke, Network Computing Devices, Inc

X Version 11							   xfsinfo 1.0.2							XFSINFO(1)
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