Linux awk string exec variable -


i have variable when echo looks this:

#echo $var awk '{print  $7 " " $6 " " $8 " "}'

but if try like

#ls -lah | exec $var awk: '{print awk: ^ invalid char ''' in expression

what doing wrong?

instead of exec need call eval:

ls -lah | eval $var

however 2 cautions here:

  1. parsing ls output should avoided
  2. use of eval should minimised

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