【发布时间】：2013-06-23 12:41:12
【问题描述】：
我有一个像这样的文件 file_pattern：
SET default_parallel 10
SET pig.splitCombination true
SET pig.maxCombinedSplitSize 134217728
register 'hdfs:///usr/lib/pig/piggybank.jar';
define LENGTH org.apache.pig.piggybank.evaluation.string.LENGTH();
//Some other stuff goes here
还有一个像这样的文件 insert_file：
ld_DW_D_INSTALLATION_PRODUCTS = load '/dan/data/dwh/dw_d_installation_products' using PigStorage ('|') as (inst_prod_wid , bac_wid , di
strict_code , billing_account_no , inst_sequence_no , product_code , contract_type , maintenance_contract , exchange_line_indicator , p
roduct_type , quantity , first_cph_date , last_cph_date , first_cph_term_expiry_date , last_cph_term_expiry_date , last_cph_order_no ,
ts_last_updated , data_owner , source_system , etl_created_dt);
ld_DEDUP_PROD_TPC_EXTRACT = load '/dan/data/dedup/dedup_prod_tpc_extract' using PigStorage ('|') as ( productfamilyid , productfamily ,
productgroupid , productgroup , grouplobid , productgroupowninglob , newproductid , newproductname , productowner , lifecycleid , life
cycle , buildgroupid , buildgroupname , ukbreleaseno , gs_productbuildstatusid , gs_productbuildstatus , ab_code , ab_codename , codelo
bid , codeowninglob , ab_codedestinyid , ab_codedestiny , ab_code_treatmentid , ab_code_treatmentstatus , gs_mappingstatusid , gs_mappi
ngstatus , consumercount , btb_count , gs_count , otherbu_count , operateflagid , operateflagdescription , withdrawalprojectid , withdr
awalproject , line_type , note );
现在我想要一个脚本，它会给我这样的输出：
SET default_parallel 10
SET pig.splitCombination true
SET pig.maxCombinedSplitSize 134217728
ld_DW_D_INSTALLATION_PRODUCTS = load '/dan/data/dwh/dw_d_installation_products' using PigStorage ('|') as (inst_prod_wid , bac_wid , di
strict_code , billing_account_no , inst_sequence_no , product_code , contract_type , maintenance_contract , exchange_line_indicator , p
roduct_type , quantity , first_cph_date , last_cph_date , first_cph_term_expiry_date , last_cph_term_expiry_date , last_cph_order_no ,
ts_last_updated , data_owner , source_system , etl_created_dt);
ld_DEDUP_PROD_TPC_EXTRACT = load '/dan/data/dedup/dedup_prod_tpc_extract' using PigStorage ('|') as ( productfamilyid , productfamily ,
productgroupid , productgroup , grouplobid , productgroupowninglob , newproductid , newproductname , productowner , lifecycleid , life
cycle , buildgroupid , buildgroupname , ukbreleaseno , gs_productbuildstatusid , gs_productbuildstatus , ab_code , ab_codename , codelo
bid , codeowninglob , ab_codedestinyid , ab_codedestiny , ab_code_treatmentid , ab_code_treatmentstatus , gs_mappingstatusid , gs_mappi
ngstatus , consumercount , btb_count , gs_count , otherbu_count , operateflagid , operateflagdescription , withdrawalprojectid , withdr
awalproject , line_type , note );
总的来说，我想要的是第二个文件应该在 SET 语句的最后一次出现之后插入。
提前致谢 拉加文德拉
【问题讨论】：
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我使用 sed 找到了答案：skip_set=10 sed "${skip_set}r file_to_insert" input_file 它将在 input_file 的第 10 行之后插入 file_to_insert 的内容
标签： regex perl sed awk pattern-matching