UNIX for Dummies Questions & Answers

# IP                        Name                      Comment
10.10.10.1         Lab1-1                   # Static for Lab1 subnet
10.10.10.2         Lab1-2                   # Static for Lab1 subnet
10.10.10.3         Lab1-3                   # Static for Lab1 subnet
10.10.10.4         Lab1-4                   # Static for Lab1 subnet
10.10.10.5         Lab1-5                   # Static for Lab1 subnet

awk -v number="10" '
END{
  split($1,a,".")
  n=a[4]
  for(i=1;i<=number;i++){
    print "10.10.10." ++n "         Lab1-" n "                   # Static for Lab1 subnet"
  }
}' file > new_file