Shell Programming and Scripting

for i in `ls -1 *.pattern`; do cat "$i" | awk '{SUM += $4} END { printf("%8d\t%8d\n", $i,SUM) }'; done

for i in *.pattern; do awk '{SUM += $4} END { printf("%16s\t%8d\n", FILENAME,SUM) }' $i; done

       0          538934
       0          542708
       0          551563
       0          553847
       0          552746
       0          563863
       0          512551
       0          516235

awk 'END {
  print fn, f
  print "total", t  
  }
  FNR == 1 { 
    if ( f ) {
      print fn, f
      f = x
      }
    fn = FILENAME	  
	}
{ 
  f += $4
  t += $4
  }' *pattern

awk 'END {
  print "total", t  
  }
ENDFILE {
  print FILENAME, f
  f = x
  }
{ 
  f += $4
  t += $4
  }' *pattern