摘要:
Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... 阅读全文
摘要:
CentOS系统自带的更新源的速度实在是慢,为了让CentOS6使用速度更快的YUM更新源,可以选择163(网易)的更新源。1.下载repo文件wget http://mirrors.163.com/.help/CentOS6-Base-163.repo2.备份并替换系统的repo文件[root@l... 阅读全文