How about this --?
##Assumes you have read your data into data frame "Msg17"
## Capture unique values from data file's Column 3
Col3 <- unique(Msg17$V3)
#Captures length of the unique value vector
LCol3 <- length(Col3)
## Loop to sequentially select rows with the unique Col3 values
for (i in 1:LCol3) {
print(paste("Column", Col3[i]))
print(Msg17[Msg17$V3==Col3[i],-3])
}
Good luck!
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