When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?
A.
debug
B.
lsof
C.
nessus
D.
strace
E.
traceroute
題解
選項A，沒有「debug」指令。
選項B，「lsof」指令可以用來顯示目前被開啟的檔案。
選項C，沒有「nessus」指令。
選項D，「strace」指令用來追蹤系統呼叫和信號。
選項E，「traceroute」指令可以顯示出向遠端主機傳送封包的路由過程。