设定TWO_TASK=TESTTKT:
[oracle@liu Desktop]$ export TWO_TASK=TESTTKT
[oracle@liu Desktop]$ echo $TWO_TASK
TESTTKT
[oracle@liu Desktop]$
[oracle@liu Desktop]$
[oracle@liu Desktop]$ export TWO_TASK=TESTTKT
[oracle@liu Desktop]$ echo $TWO_TASK
TESTTKT
[oracle@liu Desktop]$
[oracle@liu Desktop]$