hosts_lg_bak

`hosts_lg_bak` 通常是一个备份文件的命名习惯，用于存储与系统`hosts`文件的备份副本。`hosts`文件是一个位于操作系统中的文本文件，用于将主机名映射到IP地址。在不同的操作系统中，如Windows、Linux和macOS，这个文件的存放位置略有不同。

这个文件是网络配置中的一个重要组件，当计算机需要访问一个地址时，系统会首先检查`hosts`文件来解析这个地址。因此，管理员或用户可以通过修改`hosts`文件来控制访问某些网站或重定向某些地址。

`hosts_lg_bak`可能是系统自动创建的备份文件，或者是由用户手动创建以防止在修改`hosts`文件时出现错误。创建备份文件可以确保在新的配置导致问题时能够迅速恢复到之前的状态。

使用`hosts_lg_bak`文件时需要注意的是，它可能包含旧的、不再使用的映射，或者是在某些情况下，病毒或恶意软件可能会篡改这个文件以引导用户到钓鱼网站或恶意服务器。因此，在使用或修改`hosts`文件时应当谨慎。

相关问题

ansible -i ~/hosts_jzyw/hosts_zq_ha scc -m shell -a "cd /home/ucp/ipcc/scc/conf/ && diff SCC.xml SCC.xml.bak20230328" 是什么意思

&& ls -l"

This Ansible command uses the "ansible" command-line tool to execute a shell command on a group of hosts defined in the inventory file located at "~/hosts_jzyw/hosts_zq_ha".

The "-m" option specifies the Ansible module to use, which in this case is "shell". This module allows us to execute arbitrary shell commands on the remote hosts.

The "-a" option specifies the command to execute, which in this case is "cd /home/ucp/ipcc/scc/conf/ && ls -l". This command changes the directory to "/home/ucp/ipcc/scc/conf/" and lists the contents of the directory using the "ls -l" command.

The target of the command is the "scc" group of hosts defined in the inventory file. The command will be executed on each host in the group.

ansible -i ~/hosts_jzyw/hosts_zq_ha scc -m shell -a "cd /home/ucp/ipcc/scc/conf/ && diff SCC.xml SCC.xml.bak20230328"

&& ls -l"

This Ansible command will execute a shell command on the host group "scc" which is defined in the inventory file located at "~/hosts_jzyw/hosts_zq_ha". The shell command to be executed is "cd /home/ucp/ipcc/scc/conf/ && ls -l" which changes the current directory to "/home/ucp/ipcc/scc/conf/" and lists the files in the directory using the "ls -l" command.