try

来自「ksh 实现的基于hpux下的性能数据以及故障的采集程序。可以作为新手练手使用」· 代码 · 共 19 行

#!/bin/ksh
  awk '
    BEGIN {
      FS="|";
    }
    NR > 1 {
      print "NF is " NF;

      for ( i = 1; i < NF+1; i++ ){
        print "#" i " [" $i "]";
        gsub( " ","",$i );
        print "#" i " [" $i "]";
        if ( length ( $i ) == 0 ){
          print "$" i " is null";
        }
      }
    }
' a