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  1. #!/bin/bash
  2. string='/my/directory/file1_AAA_123_k.txt 
  3. /my/directory/file2_CCC.txt
  4. /my/directory/file2_KK_45.txt'
  5. sed -n 's~^.*/[^_/]*_\([^/]*\)\.[^./]*$~\1~p' <<< "$string"
  6. sed -nE 's~^.*/[^_/]*_([^/]*)\.[^./]*$~\1~p' <<< "$string"
Success #stdin #stdout 0.01s 5316KB
comments ()
stdin
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Standard input is empty
stdout
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AAA_123_k
CCC
KK_45
AAA_123_k
CCC
KK_45
https://ideone.com/1f8XLQ
language:
Bash (bash 5.0.3)
created:
3 years ago
visibility:
public

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