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  1. #!/bin/bash
  2. s='353451word2423157
  3. anotherword
  4. 7412yetanother1
  5. 3262andherese123anotherline4359013
  6. 5342512354325324523andherese123anotherline45913
  7. 532453andherese123anotherline413'
  8. perl -pe 's/^\d+(?=\d{2})|(\d{2})\d+$/$1/' <<< "$s"
Success #stdin #stdout 0.01s 5512KB
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stdin
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Standard input is empty
stdout
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51word2423157
anotherword
12yetanother1
62andherese123anotherline4359013
23andherese123anotherline45913
53andherese123anotherline413
https://ideone.com/vcvZ9z
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

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