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              Linux進程管理之nice命令解析【每日一個知識點第132期-Linux】

              使用Linux系統必備的技能之一就是Linux進程管理,系統運行的過程正是無數進程在運行的過程。這些進程的運行需要占用系統的內存等資源,做好系統進程的管理,對于我們合理分配、使用系統資源有非常大的意義。今天我們來看進程管理命令中的nice命令。


              nice命令用于以指定的進程調度優先級啟動其他的程序。

              語法

              nice(選項)(參數)

              選項

              -n:指定進程的優先級(整數)。

              參數

              指令及選項:需要運行的指令及其他選項。

              實例

              新建一個進程并設置優先級,將當前目錄下的documents目錄打包,但不希望tar占用太多CPU:

              nice -19 tar zcf pack.tar.gz documents

              方法非常簡單,即在原命令前加上nice -19。很多人可能有疑問了,最低優先級不是19么?那是因為這個“-19”中的“-”僅表示參數前綴;所以,如果希望將當前目錄下的documents目錄打包,并且賦予tar進程最高的優先級:

              nice --19 tar zcf pack.tar.gz documents

              《Linux學習每日一個知識點》欄目是馬哥教育Linux云計算年薪20萬+的學員社群特別發起,分享Linux工具、Linux語法、Linux項目等知識點,幫助大家快速的了解Linux學習,快速步入Linux高薪的快車道。

              【超全整理】《Linux云計算從入門到精通》linux學習入門教程系列實戰筆記全放送

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