Computing with AWK

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• Counting $3 > 15 { emp=emp+1 } END {print emp, " work more than 15 hours" }

• Computing sum and average

  ¿¹Á¦:
   {pay =pay +$2*$3}
   END{
   print NR, "employess"
   print "total", pay
   print "average", pay/NR}
   
   °á°ú:
   6 employess
   total 337.5
   average 56.25
   
   ¿¹Á¦:
   $2 > maxrate { 
   maxrate=$2
   maxemp=$1 }
   END{
   print "max pay", maxrate, "for", maxemp
   }
   
   °á°ú:
   max pay 5.50 for Mary
   

• String concatenation no neeed to be explicitly initialized

  ¿¹Á¦:
   {names=names$1" " }
   END{print names}
   
   °á°ú:
   Beth Dan Kathy Mark Mary Susie
   

• Built in fuction

  ¿¹Á¦:
   {print $1, length($1)}
   
   °á°ú:
   Beth 4
   Dan 3
   Kathy 5
   Mark 4
   Mary 4
   Susie 5
   
   ¿¹Á¦:
   {nc=nc+length($0)+1   # +1Àº CR¸¦ À§ÇÔ
    nw=nw+NF
   }
   END {
   print NR, "lines,", nw,"words,", nc,"char"}
   
   °á°ú:
   6 lines, 18 words, 88 char   # wc ¿Í µ¿ÀÏÇÑ ±â´É