grep: unrecognized option: P

1 개요[ | ]

grep: unrecognized option: P

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grep -oP 정규식
## 대신 ##
grep -oE 정규식

2 GNU grep[ | ]

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[root@localhost ~]# grep -V | head -1
grep (GNU grep) 2.20
[root@localhost ~]# echo hello world | grep -oP ll[^l]*
llo wor

3 BusyBox grep[ | ]

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# grep 2>&1 | head -1
BusyBox v1.32.1 () multi-call binary.

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# echo hello world | grep -oP ll[^l]*
grep: unrecognized option: P
BusyBox v1.32.1 () multi-call binary.

Usage: grep [-HhnlLoqvsrRiwFE] [-m N] [-A/B/C N] PATTERN/-e PATTERN.../-f FILE [FILE]...
...

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# echo hello world | grep -oE ll[^l]*
llo wor

4 같이 보기[ | ]