Shell Programming and Scripting

 
Eg:abc.txt

14.5
56.6
95.5

 
#! /bin/bash
b=90;
for i in `cat abc.txt`
do
if [ $i -gt $b ] ; then
echo " value is greater than $b "
exit
fi
done

 
$ nawk '{if($0>90){print $0" is greater than 90"}else{print $0" is less than 90"}}' test
14.5 is less than 90
56.6 is less than 90
95.5 is greater than 90

 
nawk '{if($0>90){print $0" is greater than 90"}else{print $0" is less than 90"}}' abc.txt

 
-bash: nawk: command not found

 
$ perl -lane 'print $_ if($_ > 90)' test
95.5

 
 
if [ $(echo "$i > $b"|bc) -eq 1 ]
 
instead of below code
 
if [ $i -gt $b ] ; then

#!/bin/ksh

b=90

while read i
do
   if (( i > b ))
   then
      echo " value is greater than $b "
      exit
   fi
done < abc.txt