Installation guide
Return Code
www.lsi.com/channel/products  129
For Windows
Under Windows, you set the environment variable through My Computer > 
Properties
. 
1 Click the 
Start button, right-click My Computer, and choose Properties.
2In the 
Properties dialog box, click the Advanced tab.
3On the Advanced tab, click the Environment Variables button.
You can add a new variable by clicking 
New, or edit an existing variable 
by selecting TW_CLI_LOG in the list and clicking 
Edit.
4 If this is the first time you are creating the environment variable, and you 
want to disable command logging, add the variable TW_CLI_LOG and 
specify the value as OFF. (Command logging is on by default.)
5 If the environment variable already exists, you can enable or disable it by 
editing the value and changing it to ON or OFF, as desired.
6 Restart your system for the new environment variable setting to take 
effect.
Return Code
While informative messages are written to standard output, error messages are 
written to standard error. On success, 0 is returned. On failure, 1 is returned.
To view the return code for Linux, at the shell command prompt, type:
echo $?
The screen reports either a 0 or a 1, depending on whether the command is 
successful.
For example, if you have a 3ware controller with an ID of 0, you can type the 
following command:
tw_cli /c0 show
(c0 information shown here)
echo $? 
0
Note: Setting the environment variable according to the preceding description is 
not persistent across reboot, because the the shell terminates when you power 
down the system, and defaults are reset on powerup. To set an environment 
variable that persists, set a global variable in a login config file (such as .rc or 
.cshrc) that sets the variable to the desired state when the system powers up. For 
details, see the manpage for the shell you are using.










