Shell Programming and Scripting

awk '$1<= 25 END{print $1}' input
awk '$1>= 25 BEGIN{print $1}' input

echo '20' | awk '{printf("%s Value = %d\n", ($1 < 25) ? "Smaller" : "Bigger", $1)}'

BEGIN {
  myValue=25
  bigger=9999999999
}
{
  if ( $1 < myValue && $1 > smaller ) smaller = $1
  if ( $1 > myValue && $1 < bigger )  bigger = $1
}
END {
   printf("My Value = %d\nSmaller Value = %d\nBigger Valuer = %d\n", myValue, smaller, bigger)
}