[R] help to sum up data frame

[Mohan L]

Dear All,

I have a data frame like this:

name      ip      Bsent     Breceived
a           1        0.00      0.00
a           2       1.43       19.83
a           1       0.00      0.00
a          2        1.00      1.00
b          1        0.00      2.00
b          3       0.00      2.00
b          2       2.00      0.00
b         2       2.00      0.00
b         1       24.40     22.72
c         1       1.00      1.00
c         1       2.00      1.00
c         1       2.00      1.00
c         1      90.97      15.70
d         0       0.00      0.00
d         1     30.00  	    17.14

I want to sum up the similar name into one row, like :

name      ip      Bsent     Breceived
a            6        2.43      20.83
b            9       28.40     26.72
c
d

I need help to sum up. Thanks for your time.


Thanks & Rg
Mohan L