A、The $VAR variable was not exported.
B、The $VAR should have been set as VAR.
C、dog needs double quotes around it when setting $VAR.
D、The { } should not be around VAR in the echo command.
更多“ Given the following script， why does the output come out as an empty line instead of "dog"（）#!/bin/ksh <br /> $VAR=dog <br /> echo "${VAR}"”相关的问题
A、immediately after receiving the first packet on the shared tree for a given （S，G） B、after receiving over 1 kb/s traffic onthe shared tree for a given （S，G） C、10 seconds after receiving the first packet on the shared tree for a given （S，G） D、30 seconds after receiving the first packet on the shared tree for a given （S，G） E、after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
A、Use the given value as an IPv6 address. B、Use the given value as a DNS suffix search item. C、Use the given value as a WEP key for a wireless network. D、Use the given value as a manually assigned MAC address.
A、A.Compilation fails. B、B.An exception is thrown at runtime. C、C.The code executes and prints "running". D、D.The code executes and prints "runningrunning". E、E.The code executes and prints "runningrunningrunning".
A、A.7 B、B.49 C、C.343 D、D.Compilation fails. E、E.An exception is thrown at runtime.
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