Hi Utpal,
You can use the same script from my previous email.  

 Lines1<- readLines("groups.txt")
library(stringr)
res<-paste(gsub("(.*\\:).*","\\1",Lines1),unlist(lapply(str_match_all(Lines1,"or10\\|\\d+"),paste,collapse="
 ")),sep=" ")
write.table(res,"res1.txt",row.names=FALSE,col.names=FALSE,quote=FALSE)
 Lines2<- readLines("res1.txt")
length(Lines2)
#[1] 4633
 head(Lines2)
#[1] "OG1: or10|1345 or10|387 or10|474"                      
#[2] "OG2: or10|1562 or10|1584 or10|1977"                    
#[3] "OG3: or10|1636 or10|1990 or10|2257 or10|2258 or10|2499"
#[4] "OG4: or10|600"                                         
#[5] "OG5: or10|1053 or10|2869"                              
#[6] "OG6: or10|2798 or10|568"   

A.K.


________________________________
 From: Utpal Bakshi <utpalb4...@gmail.com>
To: smartpink111 <smartpink...@yahoo.com> 
Sent: Friday, April 5, 2013 1:36 PM
Subject: 
 

Offcourse...

The groups.txt file is my input file..
I also attached the core genome program.. the scripts in myscript file uses the 
function written by Andreas Sjodin that is in coregenome.R file..

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