Shell Programming and Scripting

PDB 2500
RTDB 123
RTDB-EAGLE 122
VSCCP 2565

PDB 2500 (i.e. difference between 2500 and 123 is greater than 100 here)
RTDB-EAGLE 122 (i.e. difference between 122 and 2565 is greater than 100 here)

awk 'NR % 2 != 0 {a=$1; b=$2} NR % 2 == 0 {if (b - $2 > 100 || $2 - b > 100){print a,b}}' inputfile

awk '{p=$0; v=$2; getline; d=$2 - v} d > 100 || d < -100 {print p}' file

awk 'NR > 1 {
  x = s - $2
  if ((x > 0 ? x : -x) > 100)
    print f, s
  }
{ 
  f = $1; s = $2 
  }' infile

awk '($2-p)^2>10000 && s{print s}{s=$0;p=$2}' infile