[R] strings

[arun]

Hi,
Try:

dat1<- structure(list(V2 = c("ALKBH1", "ALKBH2", "ALKBH3", "ANKRD17", 
"APEX1", "APEX2", "APTX", "ASF1A", "ASTE1", "ATM", "ATR", "ATRIP", 
"ATRX", "ATXN3", "BCCIP", "BLM", "BRCA1", "BRCA2")), .Names = "V2", class = "data.frame", row.names = c(NA, 
18L))


dat2<- structure(list(V2 = c("ALKBH3", "APEX1", "APEX2", "APLF", "APTX", 
"ATM", "ATR", "ATRIP", "BLM", "BRCA1", "BRCA2", "BRIP1", "BTBD12", 
"CCNH")), .Names = "V2", class = "data.frame", row.names = c(NA, 
14L))


library(sqldf)
sqldf('SELECT * FROM dat1 EXCEPT SELECT * FROM dat2')
#       V2
#1  ALKBH1
#2  ALKBH2
#3 ANKRD17
#4   ASF1A
#5   ASTE1
#6    ATRX
#7   ATXN3
#8   BCCIP



#or
dat2$id<- 1
res<-merge(dat1,dat2,all=TRUE)
subset(res,is.na(res$id))[1]
#        V2
#1   ALKBH1
#2   ALKBH2
#4  ANKRD17
#9    ASF1A
#10   ASTE1
#14    ATRX
#15   ATXN3
#16   BCCIP
A.K.




I have two files containing words. I want to print the are in file 1 but 
NOT in file 2. 
How do I go about? 

file 1: 
 ABL1 
1     ALKBH1 
2     ALKBH2 
3     ALKBH3 
4    ANKRD17 
5      APEX1 
6      APEX2 
7       APTX 
8      ASF1A 
9      ASTE1 
10       ATM 
11       ATR 
12     ATRIP 
13      ATRX 
14     ATXN3 
15     BCCIP 
16       BLM 
17     BRCA1 
18     BRCA2 


file2: 
 ALKBH2 
1    ALKBH3 
2     APEX1 
3     APEX2 
4      APLF 
5      APTX 
6       ATM 
7       ATR 
8     ATRIP 
9       BLM 
10    BRCA1 
11    BRCA2 
12    BRIP1 
13   BTBD12 
14     CCNH