Shell Programming and Scripting

 #!/bin/sh


    fnGetUserQuota ()
    {
        #Below is a variable declaring the threshold limit for the quota

        limit=24

        #prints quota's on all file systems then greps the line with /home
        # The $2 is the usage and %3 is the quota. The calculation results in
        # the amount of quota being used. This is all stored in the variable 'q'

        QuotaResult=`quota -v | grep '^/home' | awk '{print int($2/$3*100)}'`
   }
   
   fnTestQuota ()
   {
        #The if statement tests if QuotaResult is more then the threshold limit
        #If its greater consider reducing your usage otherwise just prints current
        # usage

        #start of test statement

        if  [  $QuotaResult  -gt  $limit  ] 
        then
            echo "you are currently using  $QuotaResult %  of your quota "
            echo "consider reducing your usage"
            return 0        
        else
            echo "you are currently using $QuotaResult of your quota"
            exit 0

        fi
    
        #end of test statement
    }

    fnListDirectories ()
    {
        count_num=10
        blank_white=echo""
a=`ls -1 -d /home/j/jdongs/*/|while read line; do basename "$line";done`
        $blank_white
        echo "The 10 biggest directories in your home directory are:"
        

        echo "Size    Directory"
        echo "----    ---------"

        #The following prints the largest to smallest directories sorts them
        # numerically in reverse but only lists the first 10 in kilobytes
        # in a human readable format
        
        $blank_white
      
        du -k -h $a | sort -nr | head -$count_num
    }

    fnGetUserQuota
    fnTestQuota
    fnListDirectories

    exit 0