R: How to subset multiple elements from a list

Question

    > x
    [[1]]
    [1] \"Bob\"  \"John\" \"Tom\" 
    [2] \"Claire\" \"Betsy\"

    [[2]]
    [1] \"Strawberry\" \"Banana\"    
    [2] \"Kiwi\"

    [[3]]
            


        

Answer 1

Try

sapply(x2, `[`,2)
#[1] " from localhost (localhost [127.0.0.1])"                   
#[2] " from phobos [127.0.0.1]"                                  
#[3] " from n20.grp.scd.yahoo.com (n20.grp.scd.yahoo.com"        
#[4] " from [66.218.67.196] by n20.grp.scd.yahoo.com with NNFMP;"

data

x2 <- list(c("Received", " from localhost (localhost [127.0.0.1])"),
 c("Received", " from phobos [127.0.0.1]"), c("Received", 
 " from n20.grp.scd.yahoo.com (n20.grp.scd.yahoo.com"), 
 c("Received", " from [66.218.67.196] by n20.grp.scd.yahoo.com with NNFMP;" ) )