使用history命令查看Linux命令历史，按Ctrl+R搜索，通过编号执行历史命令，用history -c清除记录，并通过HISTSIZE等环境变量自定义行为。

To view command history in Linux, use the `history` command. You can search with `Ctrl+R`, execute past commands by number, or clear history with `history -c`. Customize behavior via environment variables like `HISTSIZE`.