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grep 和命令行变量替换

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grep 和命令行变量替换

在以下命令序列中，

 $ grep -E '^.{11,22}John' emplist 
 Operations John Thompson  PARTHawks        Cher           
 Sales      John Jacobs    FULLHawks        Davinder Singh 
 Finance    Dean Johnson   FULLVegans       Sandeep Jain   
 $ Name=John
 $ grep -E '^.{11,22}$Name' emplist 
 $

我想要的输出

grep -E '^.{11,22}$Name' emplist

与输出相同

grep -E '^.{11,22}John' emplist

答案1

Name=John
grep -E "^.{11,22}$Name" emplist

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