$ export DUMP_PATH=/tmp/products/exp_full_DEMO_1_1.dmp
#delete matching pattern from beginning
$ export TMP=${DUMP_PATH#*/exp_} $ echo $TMP
full_DEMO_1_1.dmp
#delete matching pattern from end
$ export EXPORT_FILE=${TMP%.dmp}
$ echo $EXPORT_FILE
full_DEMO_1_1
