awk根据条件过滤文件

Posted 2021-05-06

我使用下面的代码来过滤我的源文件。此代码包含多个gsub条件

但是这里的问题是由于多个gsub，脚本需要花费大量时间来执行和解析另一个文件中的数据。你能不能让我知道实现这些条件的其他方法，以便我的脚本可以更快地执行

awk -F"[        	]" -v OFS="|" '{gsub(/^[ 	]+|[ 	]+$/,"");gsub(/"/,"");gsub(/[[:blank:]]+|.|-/,"",$32);gsub(/[[:blank:]]+|.|-/,"",$13);gsub(/^[[:space:]]+|[[:spa
ce:]]+$|,/,"",$38);gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$42);gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$44);gsub(/^[[:space:]]+|[[:space:]]+$/,"",$27);gsub(/^[[:spa
ce:]]+|[[:space:]]+$/,"",$40);gsub(/^[[:blank:]]+|[[:blank:]]+$/,"",$18);

下面是相同的代码，但是为了便于阅读而切片（仅限可读性）：

awk -F"[        	]" -v OFS="|" '{gsub(/^[ 	]+|[ 	]+$/,"");
                                  gsub(/"/,"");
                                  gsub(/[[:blank:]]+|.|-/,"",$32);
                                  gsub(/[[:blank:]]+|.|-/,"",$13);
                                  gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$38);
                                  gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$42);
                                  gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$44);
                                  gsub(/^[[:space:]]+|[[:space:]]+$/,"",$27);
                                  gsub(/^[[:space:]]+|[[:space:]]+$/,"",$40);
                                  gsub(/^[[:blank:]]+|[[:blank:]]+$/,"",$18);

如果需要输入文件，请告诉我，将分享

答案

这不是答案，而是代码的可读版本：

awk -F"[        	]" -v OFS="|" '
  { gsub(/^[ 	]+|[ 	]+$/,"");
    gsub(/"/,"");  
    gsub(/[[:blank:]]+|.|-/,"",$32);
    gsub(/[[:blank:]]+|.|-/,"",$13);
    gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$38);
    gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$42);
    gsub(/^[[:space:]]+|[[:space:]]+$|,/,"",$44);
    gsub(/^[[:space:]]+|[[:space:]]+$/,"",$27);
    gsub(/^[[:space:]]+|[[:space:]]+$/,"",$40);
    gsub(/^[[:blank:]]+|[[:blank:]]+$/,"",$18);
  }' # closing brace and quote were probably missing