删除第二和第二次匹配之间的所有内容。

Question

我有字符串，我想格式化。我想删除第二个;和第二个最后一个;之间的所有内容。

输入

cellular organisms;Eukaryota;Opisthokonta;Metazoa;Eumetazoa;Bilateria;Protostomia;Ecdysozoa;Panarthropoda;Arthropoda;Mandibulata;Pancrustacea;Hexapoda;Insecta;Dicondylia;Pterygota;Neoptera;Endopterygota;Coleoptera;Polyphaga;Cucujiformia;Tenebrionoidea;Tenebrionidae;Tenebrionidae incertae sedis;Tribolium;Tribolium castaneum;  

输出

cellular organisms;Eukaryota;Tribolium castaneum;

我试过使用sed

sed 's/;[^;]*//' <<<"cellular organisms;Eukaryota;Opisthokonta;Metazoa;Eumetazoa;Bilateria;Protostomia;Ecdysozoa;Panarthropoda;Arthropoda;Mandibulata;Pancrustacea;Hexapoda;Insecta;Dicondylia;Pterygota;Neoptera;Endopterygota;Coleoptera;Polyphaga;Cucujiformia;Tenebrionoidea;Tenebrionidae;Tenebrionidae incertae sedis;Tribolium;Tribolium castaneum;"

产生

cellular organisms;Opisthokonta;Metazoa;Eumetazoa;Bilateria;Protostomia;Ecdysozoa;Panarthropoda;Arthropoda;Mandibulata;Pancrustacea;Hexapoda;Insecta;Dicondylia;Pterygota;Neoptera;Endopterygota;Coleoptera;Polyphaga;Cucujiformia;Tenebrionoidea;Tenebrionidae;Tenebrionidae incertae sedis;Tribolium;Tribolium castaneum;

Answer 1

另一种sed方法是：

sed 's/\(^[^;]*\;[^;]*\).*\(\;[^;]*\;$\)/\1\2/'

输出：cellular organisms;Eukaryota;Tribolium castaneum;

Answer 2

用sed来做

sed 's/\(\([^;]*\;\)\{2\}\).*\;\([^;]*;\)/\1\3/'

Answer 3

通过python3：

#!/bin/python3
import sys
fil = sys.argv[1]
with open(fil) as f:
    for line in f:
        m = line.strip().split(';')
        print(';'.join(m[:2]+m[-2:]))

将上述内容保存在一个名为script.py的文件中，然后使用以下方法运行：

python3 script.py file