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  1. #!/bin/bash
  2. filename='901201_HKW_RNT_HW21_136_137_DE_442_Freigabe_DE_CLX.pdf'
  3. sed -n 's/.*\([0-9]\{3\}_[0-9]\{3\}\).*/\1/p' <<< "$filename"
Success #stdin #stdout 0.01s 5564KB
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136_137
https://ideone.com/nnuHA6
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
public

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