liubin95

import java.util.stream.IntStream;

/**
 * Singleton.
 *
 * @author 刘斌
 * @version 0.0.1
 * @serial 2022-02-15 : base version.
 */
public class Singleton {

liubin95

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.StringJoiner;
import java.util.stream.Collectors;

/**
 * BuildTree.

liubin95

for i in `ls | grep sql`; do
  echo $i;
  # 将a替换成b
  sed -i 's/a/b/g' $i
  done