[SOLVED] command not found on shell script run

Issue

i have a script that compare heapmemory

#!/bin/bash

$a=$(jcmd `jps -l | grep com.adobe.coldfusion.bootstrap.Bootstrap  | cut -f1 -d ' '` GC.heap_info | awk 'NR==2 {print $5}')

$b=1000000K

if [[ $a -ge $b ]]

 then

   echo "The heapmemory used is greater."

else

   echo "The heapmemory used is small."

fi

my question is when I am executing this script using ./testscriptforheap.sh, although the output is correct but why I am getting this command not found in line number 2 and 3 I am not able to figure it out.

> ./testscriptforheap.sh: line 2: =1603644K: command not found

> ./testscriptforheap.sh: line 3: =1000000K: command not found 

The heapmemory used is greater.

Solution

Assignments in bash (and also in sh) don't use the $ in front of them:

a=$(jcmd `jps -l | grep com.adobe.coldfusion.bootstrap.Bootstrap  | cut -f1 -d ' '` GC.heap_info | awk 'NR==2 {print $5}')

b=1000000K

Answered By - Thomas

Answer Checked By - Katrina (WPSolving Volunteer)