The Windows NT 4.0 and Windows 2000 CMD processor allows you to pipe the output of a command as the input to another command.

You can use this ability to create compound commands.

For example, you can pipe the output of a net group /domain command into a Find command, in order to determine if a user is a member of a group. I have created IsInGrp.bat to demonstrate this ability. The syntax is:

IsInGrp DomainGroup UserName

IsInGrp.bat contains:

@echo off                              setlocal                              set grp=%1                              set usr=%2                              set grp=%grp:"=%                              set usr=%usr:"=%                              Net Group /Domain "%grp%"|Find /i "%usr%">null                              If ErrorLevel 1 (                                  Echo %usr% is NOT a member of the %grp% group.                              ) Else (                                  Echo %usr% is a member of the %grp% group.                              )                              endlocal
NOTE: See tip 0758 for the IF / ELSE syntax.

If you wish return a fnd variable, instead of the Echo:

@echo off                              setlocal                              set grp=%1                              set usr=%2                              set grp=%grp:"=%                              set usr=%usr:"=%                              Net Group /Domain "%grp%"|Find /i "%usr%">null                              If ErrorLevel 1 (                                  set fnd=N                              ) Else (                                  set fnd=Y                              )                              endlocal&set fnd=%fnd%
Example of use:
                              IsInGrp "Domain Admins" "%UserName%"                              if "%fnd%"=="Y" goto ismbr                              @echo %UserName% is not a member of the Domain Admin group                              goto end                              :ismbr                              @echo %UserName% is a member of the Domain Admin group                              :end