Question

我的文本文件包含以下信息

    @Mp_chzt_1
    asdjhsadhasdhdbjashdjaudashdjashdasdhasdhasdh
    asdasdkasjdkaskdskadkasdkasdkjaskldasdklasdas
    ahsjdasdfdfsdhghrtuztiuiuzozuoiouiouiouiouiou
    asjkjieqjeroiweoriksfjksjksjkf
    +
    !!!@!!!!!!!!++??????????????~~~~~~~~~~~~~
    BBBBBBBBBBBBMMMMMM!!!!!++LLLLLL******
    @Mp_btrea_1
    uokjjkzghqawsdasduihdlöklöaklöskdlkaökgzgzggz
    asdasduzuqwtzeqweuvixcvdjfiisduiifuzwpqüqwoeü
    kjkjiuijwiqquzwuziziqz
    +
    **********||||||||||||##@######++++?????????
    MMMMMMMMMUUUU***+++~~~~~~~~~~~~~~~~~~~~~~~~~~
    @Mp_trwe_3
    jhtrqhkjiqkjkqwjelasjjljiewkjkljkldjflsjljki8u
    immhgwqtzopirpjgbsdkfjieipwippieoroeirkvsdjjfk
    jkahdjhjhfuhjkwekksjakjeiuwiurweiurioweuroweod
    poplrtm,ernmjhazqweqwjidiipfiopdifosidpfppsdif
    mnasnbdhgqweqweipoipoxkajksdökalsklsaksldkasöd
    asdas
    +
    !!!!!!!!!!!!!!!!!!@@@@@???????????????????

我想在文本正下方的@ Mp_ *和+之间提取区域并将其导出到txt文件，如下所示

    @Mp_chzt_1
    asdjhsadhasdhdbjashdjaudashdjashdasdhasdhasdh
    asdasdkasjdkaskdskadkasdkasdkjaskldasdklasdas
    ahsjdasdfdfsdhghrtuztiuiuzozuoiouiouiouiouiou
    asjkjieqjeroiweoriksfjksjksjkf
    @Mp_btrea_1
    uokjjkzghqawsdasduihdlöklöaklöskdlkaökgzgzggz
    asdasduzuqwtzeqweuvixcvdjfiisduiifuzwpqüqwoeü
    kjkjiuijwiqquzwuziziqz
    @Mp_trwe_3
    jhtrqhkjiqkjkqwjelasjjljiewkjkljkldjflsjljki8u
    immhgwqtzopirpjgbsdkfjieipwippieoroeirkvsdjjfk
    jkahdjhjhfuhjkwekksjakjeiuwiurweiurioweuroweod
    poplrtm,ernmjhazqweqwjidiipfiopdifosidpfppsdif
    mnasnbdhgqweqweipoipoxkajksdökalsklsaksldkasöd
    asdas

当我使用以下代码时

grep -o -P '(?<=@MP.*).*(?=+)' query.txt > output.txt

它给了我“grep：没有什么可重复的”。任何人都可以指导我的错误在哪里以及如何纠正它。提前谢谢。

Answer 1

最好使用awk：

awk '/^@/{f=1} /^+/ {f=0} f' file > output.txt

或者，如果您有前导空格，请将其与\s*匹配：

awk '/^\s*@/{f=1} /^\s*\+/ {f=0} f' file > output.txt

这使用标记f来决定是否应该打印该行。

当它看到以@开头的行时，会激活它。
当它看到以+开头的行时，会停用它。
然后，它会评估该标志并打印它是否为True。

根据您的输入，它返回：

@Mp_chzt_1
asdjhsadhasdhdbjashdjaudashdjashdasdhasdhasdh
asdasdkasjdkaskdskadkasdkasdkjaskldasdklasdas
ahsjdasdfdfsdhghrtuztiuiuzozuoiouiouiouiouiou
asjkjieqjeroiweoriksfjksjksjkf
@Mp_btrea_1
uokjjkzghqawsdasduihdlöklöaklöskdlkaökgzgzggz
asdasduzuqwtzeqweuvixcvdjfiisduiifuzwpqüqwoeü
kjkjiuijwiqquzwuziziqz
@Mp_trwe_3
jhtrqhkjiqkjkqwjelasjjljiewkjkljkldjflsjljki8u
immhgwqtzopirpjgbsdkfjieipwippieoroeirkvsdjjfk
jkahdjhjhfuhjkwekksjakjeiuwiurweiurioweuroweod
poplrtm,ernmjhazqweqwjidiipfiopdifosidpfppsdif
mnasnbdhgqweqweipoipoxkajksdökalsklsaksldkasöd
asdas

使用grep在两个字符之间提取子文本

1 个答案: