Oh, and regarding the moderator approval, I guess it's because you're a new user to the list.

Ivan

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Le 03/05/2016 à 12:38, Steven Yen a écrit :
Dear all
In the grep command below, is there a way to identify only "age" and
not "age2"? Thanks.

x<-c("abc","def","rst","xyz","age","age2")
x
[1] "abc"  "def"  "rst"  "xyz"  "age"  "age2"
grep("age2",x)
[1] 6
grep("age",x) # I need to grab "age" only, not "age2"
[1] 5 6

Also, I post message to r-help@r-project.org and that's subject to
approval by the list moderator. Am I sending it to the wrong address?

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