cat /etc/oratab | grep -e "^[\a-Az-Z0-9\]\{0,8\}\:*/[[:graph:]]*" | awk -F: '{print $1,$2}' | read a b
$ echo $a
target
$ echo $b
/usr/local/opt/oracle/app/oracle/product/11.2.0.4
export ORACLE_HOME=$b
export ORACLE_SID=$a
export PATH=$ORACLE_HOME/bin:$PATH
