Directing command with a pipe to a variable

[tbharber]

I am trying to direct the contents of a command to a variable with the following code:

for /f "tokens=* delims= " %%a in ('Systeminfo /S %ndnum% | Find "Up Time"') do (
set myvar=%%a
)

The problem is because the command has a pipe symbol in it I get the error: "| was unexpected at this time." If I use just the Systeminfo command without the pipe symbol it processes the code ok.

Anyone have any ideas how I can do this with the pipe symbol?

When I goto view the variable the contents should be something like "System Up Time: 2 Days, 19 Hours, 25 Minutes, 50 Seconds"

[amel27]

use shielding symbol "^" (one level):

Code: Select all

for /f "delims=" %%a in ('Systeminfo /S %ndnum%^| Find "Up Time"') do set myvar=%%a

[tbharber]

Yep that did it. Thanks!

[tbharber]

One small issue I have with this command is when I run it and the computer I am checking Systeminfo for is not on the network I get the error on the screen "ERROR: The RPC server is unavailable."

Getting this error is completly fine as later on in the script I have a line that looks for this error and lets the user know it wont work. What I want is for the error not to pop up on the screen. I tried to put a @ at the beginning and a >nul at the end but the error still shows up on the screen. How does one hide the error messages that come up from commands?

[aGerman]

The errormessage comes from SYSTEMINFO, thats why you have to redirect it by 2>nul. The ">" must be escaped into the FOR loop (similar to the pipe character).

Code: Select all

for /f "delims=" %%a in ('Systeminfo /S %ndnum% 2^>nul ^| Find "Up Time"') do set myvar=%%a

Regards
aGerman

[tbharber]

Thanks again! I was putting the 2>nul after the find command which is why I couldnt get it to work. There is one more problem I am having with this code....

Sometimes when the computer is not available the the result comes back "System Up Time: N/A". I want to put a line in so if this line comes up to bring up an messege to the user stating the computer is not available. The problem is when this happens I am getting the error "Up was unexpected at this time."


Here is the code:

set compname=nd1234567
for /f "delims=" %%a in ('Systeminfo /S %compname% 2^>nul ^| Find "Up Time"') do set myvar=%%a
if %myvar%="System Up Time: N/A" echo The computer is not available.



I seems the problem is that %myvar% has the result of System Up Time: N/A. I think because it is not in quotes it is causing a problem.

Any thoughts?

[aGerman]

A single equal sign doesn't work and you have to use quotes for the variable too. Try

Code: Select all

if "%myvar%"=="System Up Time: N/A" echo The computer is not available.

Regards
aGerman

[tbharber]

That did it. Thanks again!