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                #### 文件類型 ``` file test.txt test.txt: ASCII text ``` #### 查看部分文件 tail ``` tail -n 2 log_file 顯示最后兩行,不加參數默認顯示最后10行 ``` ``` -f參數是tail命令的一個突出特性。它允許你在其他進程使用該文件時查看文件的內容。 tail命令會保持活動狀態,并不斷顯示添加到文件中的內容。這是實時監測系統日志的絕妙 方式 ``` head ``` head log_file 默認顯示前10行 head -5 log_file 顯示前5行 ```
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