fork(1) download 
  1. echo abcdefghijklmnopqrstuvxz | sed '/^.\{3\}../s/./X/4'
  2. echo varun| awk 'BEGIN{OFS=FS=""}{$(2)="0";$(3)="1"}1'
Success #stdin #stdout 0.03s 5312KB
comments (?)
stdin 
Standard input is empty
stdout 
abcXefghijklmnopqrstuvxz
v01un
https://ideone.com/98FBr
language:
Bash (bash 5.0.3)
created:
13 years ago
visibility:
public

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