5. Unix : Average Salary

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Employee Details are stored in a file in the following format:

 

EmpID;EmpName;Salary

 

Write a shell script to find the count of employees whose salary is less than the average salary of all employees.

The file with the employee details will be given as a command line argument when your script will run.

 

For example,

 

If the input file contains the following employee records

 

EmpID;EmpName;Salary
100;A;30000
102;B;45000
103;C;15000
104;D;40000
 

The output will be,

2

 

 

Solutions

 

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read
awk 'BEGIN{ FS=";";Total;count;i;num}
     { 
       sum+=$3;num+=1;a[i++]=$3;
         
     }
     END{ avg=sum/num;
     for(j=0;j<i;j++){
          if(a[j]<avg){
              count++
          }
     } 
       {print count} 
    }'
 

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Try it in online compiler -> click here

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