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  1. #!/bin/bash
  2.  
  3. echo "Vel RMSE H D20120122 D20130404 X Y
  4.       0.5 0.1  3 4         5         2 2
  5.       0.5 0.1  3 test4         test5         2 2
  6.       6 7 8 9" | awk '
  7. BEGIN { ORS="" };
  8. {
  9.   if (NR==1) {
  10.     for(i=1; i<=NF; i++) {
  11.       if($i ~ /D2/) {
  12.         arr[++keyNr] = i
  13.       }
  14.     }
  15.   }
  16.   for (y=1; y<=keyNr; y++) {
  17.     printf("%-10s", $arr[y])
  18.   }
  19.   print "\n"
  20. }'
Success #stdin #stdout 0.01s 5464KB
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stdin
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Standard input is empty
stdout
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D20120122 D20130404 
4         5         
test4     test5     
9
https://ideone.com/SjZFg2
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

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