merge - rename the multiple columns in R -

i have 1000 files column similar column names.for example :

df1

date price close            

df2

date price close  

and on...

if try merge them based date merge columns have retained old names , want rename them in loop

so merge data set looks

date price close price close 

i want like

date price1 close1 price2 close2. 

is there easy way it? have tried couple of things not giving me correct output

this using plyr package:

mod_join = function(mypath){   filenames=list.files(path=mypath, full.names=true)   datalist = lapply(filenames, function(x){read.csv(file=x,header=t)[,c('date','high','low')]})   join_all(datalist,by = "date") }  

this using merge command on data frame:

merge2 = function(mypath){   filenames=list.files(path=mypath, full.names=true)   datalist = lapply(filenames, function(x){read.csv(file=x,header=t)[,c('date','high','low')]})   reduce(function(x,y) {merge(x,y,by.x= "date",by.y = "date",all=t)}, datalist)}  }   

i tried using loop making data frame lead using each data frame subset , merge subsequently somehow not subsetting dataframes:

for (i in 1:1000){   data_subset <- sprintf('data_%d',i)   mydata_subset <- data.frame(,data_subset["date"],data_subset["high"],data_subset["daylow"])   obj_name <- paste('subset_pricedata',i,sep ="_")   assign(obj_name,value = mydata_subset) }  

any great. thanks

hopefully, job:

library(plyr) df1 = rename(df1,c("price"="price1","close"="close1")) df2 = rename(df2,c("price"="price2","close"="close2")) new = merge(df1,df2,all=true) 

please comment if face difficulties.