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  1. #!/bin/bash
  2. s='abbaxabaxabbax
  3. abbax
  4. abaxabbax
  5. abbax ab a x abbax xxxxx
  6. abbax a abbax a abbax a'
  7. grep 'abbax.*abbax' <<< "$s" | grep -v 'abbax.*abbax.*abbax'
  8. echo "А теперь регулярное выражение PCRE с использованием GNU grep:"
  9. grep -P '^(?!(.*abbax){3})(?:.*?abbax){2}' <<< "$s"
Success #stdin #stdout 0s 4684KB
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stdin
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Standard input is empty
stdout
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abbaxabaxabbax
abbax ab a x abbax xxxxx
А теперь регулярное выражение PCRE с использованием GNU grep:
abbaxabaxabbax
abbax ab a x abbax xxxxx
https://ideone.com/gt02qw
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
secret

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