paste(" /" ") and paste(" /' ")

I wish to write  "" using paste(), but
  

paste() doesn't write anything, it constructs character vectors.  It is 
the auto-printing that is adding the backslashes.  Use cat() to write 
things without them:

 > cat(paste("\"","Hola","\"",sep=""))
"Hola"

In fact, cat() is flexible and you could just use

cat("\"","Hola","\"",sep="")

 > paste("\"","Hola","\"",sep="")

[1] "\"Hola\""

 >

while the same approach works with ''

 > paste("\'","Hola","\'",sep="")

[1] "'Hola'"


why this difference? how could I do it to get "Hola" ?

  

print() puts double quotes around strings when it prints them; that 
means it needs backslash escapes on double quotes within the string, but 
single quotes are fine.
Your vector did contain "Hola", but print() escaped the quotes.

Duncan Murdoch

Thanks

Agus