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  1. #!/bin/bash
  2. s='hi helo tmp#100000 bye
  3. 100000 hi bye
  4. hi 100000 bye'
  5. var=100000
  6. grep -E "(^|[[:blank:]])$var($|[[:blank:]])" <<< "$s"
Success #stdin #stdout 0s 4384KB
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stdin
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Standard input is empty
stdout
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100000 hi bye
hi 100000 bye
https://ideone.com/QI5xR0
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
secret

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