#!/bin/bash# description: export perf data to a postgresql database# args: [database name] [columns] [calls]n_args=0for i in "$@"do    if expr match "$i" "-" > /dev/null ; then	break    fi    n_args=$(( $n_args + 1 ))doneif [ "$n_args" -gt 3 ] ; then    echo "usage: export-to-postgresql-report [database name] [columns] [calls]"    exitfiif [ "$n_args" -gt 2 ] ; then    dbname=$1    columns=$2    calls=$3    shift 3elif [ "$n_args" -gt 1 ] ; then    dbname=$1    columns=$2    shift 2elif [ "$n_args" -gt 0 ] ; then    dbname=$1    shiftfiperf script $@ -s "$PERF_EXEC_PATH"/scripts/python/export-to-postgresql.py $dbname $columns $calls