Remove an 'Equals' symbol from text string

Question

I'm running a WMIC lookup against a series of remote client machines, pulling in Model and serial number.

For /F "tokens=*" %%b in ('wmic /node:%device% computersystem get Model /value^|find "Model"') do Set model=%%b

FOR /F "tokens=*" %%c in ('wmic /node:%device% bios GET serialnumber /value^|find "SerialNumber=" ') do set Serialnumber=%%c

The problem I have is that (for example) %serialnumber% is set to:SerialNumber=CNU8424GP3

I don't want the 'Serialnumber=', I just want the Serial number itself.

The only way I've found of stripping this is:

set SerialNumber=!serialnumber:SerialNumber=!

but this leaves an equals sign at the beginning of the line. So the final output is =CNUBFZXXY, what I would like to do is to remove the leading =, and I haven't been able to.

Any Suggestions?

Answer 1

Add delims== to your for statements and change tokens=* to tokens=1-2. The values you want will then be in the second for loop variables:

For /F "delims== tokens=1-2" %%b in ('wmic /node:%device% computersystem get Model /value^|find "Model"') do set model=%%c
For /F "delims== tokens=1-2" %%c in ('wmic /node:%device% bios GET serialnumber /value^|find "SerialNumber=" ') do set Serialnumber=%%d

Answer 2

It is possible to retrieve specific characters from a string variable.

Syntax %variable:~num_chars_to_skip% %variable:~num_chars_to_skip,num_chars_to_keep%

This can include negative numbers:

  %variable:~num_chars_to_skip, -num_chars_to_skip%
  %variable:~-num_chars_to_skip,num_chars_to_keep%

Example

 SET _test=012345
 SET _result=%_test:~1,6%
 ECHO %_result%          =12345