use regex in R to parse a string -


i have string this:

vmstat_webserver01.20130102

i need use regex pick value between "_" , "."

i tried this:

grep("(_.*)+.", name, value=true)

did not work pointers?

you can gsub():

name <- 'vmstat_webserver01.20130102' gsub('.*_(.*)\\..*', '\\1', name)

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