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  1. #!/bin/bash
  2. #s="32432423 jkhkjh [234] hkjh32 2342342"
  3. s="[GLOBAL] and [MAIL_1]"
  4. grep -o '\[[^][]*]' <<< "$s"
Success #stdin #stdout 0s 4364KB
comments (?)
stdin 
Standard input is empty
stdout 
[GLOBAL]
[MAIL_1]
https://ideone.com/P5Ela0
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
secret

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