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- [root@docker tmp]# grep -oE "[[0-9].+]" logfile
- [113a6d9e-7b06-42c6-a52b-7a4e4d2e216c]
- [113a6d9e-7b06-42c6-a52b-7a4e4d2e216c]
- [root@docker tmp]#
- $ grep -oP "(?<=[)[0-9].+(?=])" logfile
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
- $ cat a.txt
- test hello..[113a6d9e-7b06-42c6-a52b-7a4e4d2e216c]... this is
- te [113a6d9e-7b06-42c6-a52b-7a4e4d2e216c]. this is hello
- $ grep -oP '(?<=[)[^]]*' a.txt
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
- grep -oE "[[0-9].+]" logfile | cut -d'[' -f2 | cut -d']' -f1
- $ grep -oE "[[0-9].+]" logfile | tr -d '[]'
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
- 113a6d9e-7b06-42c6-a52b-7a4e4d2e216c
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