Conditional reverse of certain file line order Post: 302287636

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Top Forums Shell Programming and Scripting Conditional reverse of certain file line order Post 302287636 by perlrookie on Saturday 14th of February 2009 07:41:16 PM

02-14-2009

Registered User

Conditional reverse of certain file line order

Hi I am brand new to programming, I dont know how to go about this task, or what language is best for this...If there is an easy solution in different languages, I would love to see them. I want to learn about the steps to take on this, so Please put in comments where code is used.
I believe in the old addage, "teach a man to fish and he is fed for life"
Thank you all in advance.

I have a file that need to have some of the lines' ordering switched.
When the (x)coordinate (x,y)is even integer, need to reverse line order.

starting file
'some value' 1,1
'some value' 1,4
'some value' 1,6
'some value' 2,4
'some value' 2,5
'some value' 3,1
'some value' 4,1
'some value' 4,4
'some value' 4,8
'some value' 5,4

New File
'some value' 1,1
'some value' 1,4
'some value' 1,6
'some value' 2,5
'some value' 2,4
'some value' 3,1
'some value' 4,8
'some value' 4,4
'some value' 4,1
'some value' 5,4

Smilie

Thank you all in advance for any help

perlrookie

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LEARN ABOUT MOJAVE

osalang

OSALANG(1)						    BSD General Commands Manual 						OSALANG(1)

NAME

     osalang -- information about installed OSA languages

SYNOPSIS

     osalang [-dlL]

DESCRIPTION

     osalang prints information about installed OSA languages.	With no options, it prints an unadorned list of language names to standard output.
     These names can be passed to the -l options of osacompile(1) and osascript(1).  The options are as follows:

     -d    Only print the default language.

     -l    List in long format.  For each language, osalang will print its component subtype, manufacturer, and capability flags.  There are eight
	   groups of optional routines that scripting components can support.  Each flag is either a letter, meaning the group is supported, or
	   '-', meaning it is not.  The letters map to the following groups:

		 c     compiling scripts.
		 g     getting source data.
		 x     coercing script values.
		 e     manipulating the event create and send functions.
		 r     recording scripts.
		 v     ``convenience'' APIs to execute scripts in one step.
		 d     manipulating dialects.
		 h     using scripts to handle Apple Events.

	   For descriptions of the groups and the APIs in each of them, see <http://developer.apple.com/documentation/mac/IAC/IAC-361.html>.

     -L    Same as -l, but also prints the description of each component after its name.

SEE ALSO

     osacompile(1), osascript(1)

Mac OS X							    May 1, 2001 							  Mac OS X