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For example, if you had a 3ware controller with an ID of 0, you could type
this command:
tw_cli /c0 show
(c0 information displayed here)
echo $?
0
If you type:
tw_cli /c7 show
error: (CLI003) specified controller does not exist.
echo $?
1
This example fails (returns 1) because there is no controller 7.
To view the return code for Windows, in a command window type
tw_cli /c0 show
(c0 info displayed here)
if errorlevel 0 echo 0
0
tw_cli /c7 show
error....
if errorlevel 1 echo 1
1
This example fails (returns 1) because there is no controller 7.