fork(1) download 
  1.  
  2. mystring <- c("000450")
  3. gsub("\\G0", "x", mystring, perl=TRUE)
Success #stdin #stdout 0.26s 39348KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "xxx450"
https://ideone.com/8ZaJAW
language:
R (R 3.5.2)
created:
7 years ago
visibility:
secret

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