[R] Grep command

[Jim Lemon]

Hi Steven,
If this is just a one-off, you could do this:

grepl("age",x) & nchar(x)<4

returning a logical vector containing TRUE for "age" but not "age2"

Jim


On Wed, May 4, 2016 at 3:45 PM, Steven Yen <syen04 at gmail.com> wrote:
> Dear all
> In the grep command below, is there a way to identify only "age" and
> not "age2"? In other words, I like to greb "age" and "age2"
> separately, one at a time. 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
>
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