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  1. #!/bin/bash
  2. sed "s/./&$(for i in {1..7}; do echo -n '?'; done)/g" <<< "DECEMBER"
Success #stdin #stdout 0.01s 5600KB
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D???????E???????C???????E???????M???????B???????E???????R???????
https://ideone.com/mcLQmG
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
secret

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