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如何在“so”和“again”之间提取数据（第一次出现测试）

cat > sedtesting.txt

this is for testing
so test
AAgainn  and again
this is for testing
so test                   
AAgainn  and again

预期输出是：

so test
AAgainn  and again

但我得到的是：

so test
AAgainn  and again
so test
AAgainn  and again

在下面的示例代码中，我们需要在“Exp_CDL_CONTRACT_D”和“Tracing Level”之间提取数据

下面的示例代码

                        <TRANSFORMATION DESCRIPTION ="" NAME ="Exp_CDL_CONTRACT_D" OBJECTVERSION ="1" REUSABLE ="NO" TYPE ="Expression" VERSIONNUMBER ="15">
                        <TRANSFORMFIELD DATATYPE ="string" DEFAULTVALUE ="&apos;UNKNOWN&apos;" DESCRIPTION ="" EXPRESSION ="CONTRACT_NUM" EXPRESSIONTYPE ="GENERAL" NAME ="CONTRACT_NUM" PICTURETEXT ="" PORTTYPE ="INPUT/OUTPUT" PRECISION ="120" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="string" DEFAULTVALUE ="-999" DESCRIPTION ="" EXPRESSION ="MASTER_AGREEMENT_NUM" EXPRESSIONTYPE ="GENERAL" NAME ="MASTER_AGREEMENT_NUM" PICTURETEXT ="" PORTTYPE ="INPUT/OUTPUT" PRECISION ="255" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="string" DEFAULTVALUE ="" DESCRIPTION ="" EXPRESSION ="DEAL_NUM" EXPRESSIONTYPE ="GENERAL" NAME ="DEAL_NUM" PICTURETEXT ="" PORTTYPE ="INPUT/OUTPUT" PRECISION ="50" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="date/time" DEFAULTVALUE ="" DESCRIPTION ="" EXPRESSION ="FUNDING_DT" EXPRESSIONTYPE ="GENERAL" NAME ="FUNDING_DT" PICTURETEXT ="" PORTTYPE ="INPUT/OUTPUT" PRECISION ="29" SCALE ="9"/>
                        <TRANSFORMFIELD DATATYPE ="date/time" DEFAULTVALUE ="TO_DATE(&apos;1/1/1900 00:00:00 &apos;,&apos;MM/DD/YYYY HH24:MI:SS&apos;)" DESCRIPTION ="" EXPRESSION ="BOOK_DT" EXPRESSIONTYPE ="GENERAL" NAME ="BOOK_DT" PICTURETEXT ="" PORTTYPE ="INPUT/OUTPUT" PRECISION ="29" SCALE ="9"/>
                        <TABLEATTRIBUTE NAME ="Tracing Level" VALUE ="Normal"/>
                          <TRANSFORMATION DESCRIPTION ="" NAME ="Exp_SEQ_CDL_CONTRACT_D" OBJECTVERSION ="1" REUSABLE ="NO" TYPE ="Expression" VERSIONNUMBER ="8">
                        <TRANSFORMFIELD DATATYPE ="decimal" DEFAULTVALUE ="" DESCRIPTION ="" EXPRESSION ="V_CNT+1" EXPRESSIONTYPE ="GENERAL" NAME ="V_CNT" PICTURETEXT ="" PORTTYPE ="LOCAL VARIABLE" PRECISION ="38" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="decimal" DEFAULTVALUE ="" DESCRIPTION ="" EXPRESSION ="IIF(V_CNT=1,:SP.GET_MAX_VALUE(&apos;CILDL.CDL_CONTRACT_D&apos;,&apos;CONTRACT_KEY&apos;),V_MAX)" EXPRESSIONTYPE ="GENERAL" NAME ="V_MAX" PICTURETEXT ="" PORTTYPE ="LOCAL VARIABLE" PRECISION ="38" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="decimal" DEFAULTVALUE ="ERROR(&apos;transformation error&apos;)" DESCRIPTION ="" EXPRESSION ="V_CNT+V_MAX" EXPRESSIONTYPE ="GENERAL" NAME ="CONTRACT_KEY" PICTURETEXT ="" PORTTYPE ="OUTPUT" PRECISION ="38" SCALE ="0"/>
                        <TRANSFORMFIELD DATATYPE ="decimal" DEFAULTVALUE ="" DESCRIPTION ="" EXPRESSION ="Lkp_CONTRACT_KEY" EXPRESSIONTYPE ="GENERAL" NAME =
                    <TABLEATTRIBUTE NAME ="Tracing Level" VALUE ="Normal"/>
                            <INSTANCE DESCRIPTION ="" INSTANCEID ="16" NAME ="Exp_CDL_CONTRACT_D" REUSABLE ="NO" TRANSFORMATION_NAME ="Exp_CDL_CONTRACT_D" TRANSFORMATION_TYPE ="Expression" TYPE ="TRANSFORMATION"/>
                    <INSTANCE DESCRIPTION ="" INSTANCEID ="17" NAME ="Lkp_CDL_CONTRACT_D" REUSABLE ="NO" TRANSFORMATION_NAME ="Lkp_CDL_CONTRACT_D" TRANSFORMATION_TYPE ="Lookup Procedure" TYPE ="TRANSFORMATION"/>
                    <INSTANCE DESCRIPTION ="" INSTANCEID ="18" NAME ="Rtr_CDL_CONTRACT_D" REUSABLE ="NO" TRANSFORMATION_NAME ="Rtr_CDL_CONTRACT_D" 
                    <MAPPINGVARIABLE DATATYPE ="date/time" DEFAULTVALUE ="" DESCRIPTION ="" ISEXPRESSIONVARIABLE ="NO" ISPARAM ="YES" NAME ="$$LAST_EXTRACT_DATE" PRECISION ="29" SCALE ="9" USERDEFINED ="YES"/>
                   </WORKFLOW>
            </FOLDER>
            </REPOSITORY>
            </POWERMART>
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1 回答 1

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使用awk：

awk -F 'Exp_CDL_CONTRACT_D|Tracing Level' '{print "\"Exp_CDL_CONTRACT_D" $2 "Tracing Level\""; exit}' RS= file.xml

或grep -oP：

grep -oP '"Exp_CDL_CONTRACT_D[\s\S]*Tracing Level"' file.xml
于 2013-10-22T17:51:18.927 回答