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删除所有不以 (EC 使用 sed awk grep

tag-icon • tag-icon awk sed grep
删除所有不以 (EC 使用 sed awk grep

我有一个这样的文件，我只想从文件中获取 EC 编号。

5'-nucleotidase SurE (EC 3.1.3.5)
L-aspartate oxidase (EC 1.4.3.16)
Nicotinamide-nucleotide adenylyltransferase, NadM family (EC 2.7.7.1) @ Nicotinate-nucleotide adenylyltransferase, NadM family (EC 2.7.7.18)
Nicotinamidase (EC 3.5.1.19)
Quinolinate phosphoribosyltransferase [decarboxylating] 
NAD synthetase (EC 6.3.1.5) / Glutamine amidotransferase chain of NAD synthetase
4'-phosphopantetheinyl transferase (EC 2.7.8.-)

输出应该是这样的：

(EC 3.1.3.5)
(EC 1.4.3.16)
(EC 2.7.7.1)
(EC 2.7.7.18)
(EC 3.5.1.19)    
(EC 6.3.1.5)    
(EC 2.7.8.-)

答案1

简单地与grep:

grep -o '(EC [^)]*)' file
  • [^)]*- 匹配除右括号之外的所有字符)

输出：

(EC 3.1.3.5)
(EC 1.4.3.16)
(EC 2.7.7.1)
(EC 2.7.7.18)
(EC 3.5.1.19)
(EC 6.3.1.5)
(EC 2.7.8.-)

答案2

sed -n 's/^\(.*\)\((EC[^)]*)\).*$/\2/p'

和awk有趣的版本：

awk -F'\\(EC|\\)' 'NF==3 { print "(EC" $2 ")" }'

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