Simple Commands 常用指令 ls 顯示文件或目錄 -l 列出文件詳細(xì)信息l(list) -a 列出當(dāng)前目錄下所有文件及目錄,包括隱藏的a...
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Simple Commands 常用指令 ls 顯示文件或目錄 -l 列出文件詳細(xì)信息l(list) -a 列出當(dāng)前目錄下所有文件及目錄,包括隱藏的a...
What is Unix Unix is a Multi-user, multi-process and multi-access operating system. 這三個(gè)...
Preemptive Multitasking(搶占式多任務(wù)處理) 在單cpu的系統(tǒng)里肯夏,同一時(shí)間只能有一個(gè)進(jìn)程運(yùn)行臣疑,在進(jìn)程切換的時(shí)候,kernel根據(jù)進(jìn)程的狀態(tài)和優(yōu)先級(jí)來(lái)選擇...
What is process? Process can be seen as a dynamic instance of program, or say it's an i...
首先寡壮,先說(shuō)說(shuō)什么是操作系統(tǒng)。 What is operating system? Anoperating system(OS) issystem softwarethat m...