AWK formatting in bash script

BulatMakhmutov

Hi I am new in shell scripting ,

and i am trying to get how some script works in bash shell script.

Please explain it to me.

 

mkfifo /tmp/pipe$DATT
cat /etc/oratab | awk 'BEGIN {FS=":"}; $0 !~ /^#/ && $3 ~ /^y|^Y/' > /tmp/pipe$DATT & 
while read line
do

    ret1=0
    ret2=0
    NAME=`echo $line | awk -F: '{print $1}'`
    DBHOME=`echo $line | awk -F: '{print $2}' | awk -F: '{print $1}'`
    Get_WorkDir
    .....
done </tmp/pipe$DATT