• Article

Management Pack Issues

 

Updated: May 13, 2016

Applies To: System Center 2012 R2 Operations Manager, System Center 2012 - Operations Manager, System Center 2012 SP1 - Operations Manager

This topic describes issues that are specific to management packs and modules.

ExecuteCommand Does Not Support Pipeline Operators or Aliases

When you use an alias or a pipeline operator with the ExecuteCommand parameter, the command fails. The ExecuteCommand parameter does not support the pipeline operator, aliases, and shell-specific syntax.

In System Center Operations Manager management packs that are designed to manage UNIX and Linux computers, the ExecuteCommand parameter does not start a shell process, causing the custom action to fail.

For each of the following custom action types, you specify how the command arguments are invoked by using either the ExecuteCommand parameter or the ExecuteShellCommand parameter:

  • Microsoft.Unix.WSMan.Invoke.ProbeAction

  • Microsoft.Unix.WSMan.Invoke.WriteAction

  • Microsoft.Unix.WSMan.Invoke.Privileged.ProbeAction

  • Microsoft.Unix.WSMan.Invoke.Privileged.WriteAction

The ExecuteCommand parameter passes the command-line arguments to the console without starting a shell process.

The ExecuteShellCommand parameter passes the command arguments to a shell process using the user's default shell; this shell supports pipeline, aliases, and shell-specific syntax.

Note

The ExecuteShellCommand parameter uses the default shell of the user who is running the command. If you require a specific shell, use the ExecuteCommand parameter, and prefix the command arguments with the required shell.

The following examples show how to use the ExecuteCommand and ExecuteShellCommand parameters:

  • To pass the command-line arguments to the console without starting a shell process:

    <p:ExecuteCommand_INPUT xmlns:p="https://schemas.microsoft.com/wbem/wscim/1/cim-schema/2/SCX_OperatingSystem"> <p:Command> service syslog status </p:Command> <p:timeout>10</p:timeout> </p:ExecuteCommand_INPUT>

  • To pass the command-line arguments to a shell process that references an explicit shell:

    <p:ExecuteCommand_INPUT xmlns:p="https://schemas.microsoft.com/wbem/wscim/1/cim-schema/2/SCX_OperatingSystem"> <p:Command> /bin/sh ps -ef syslog | grep -v grep </p:Command> <p:timeout>10</p:timeout> </p:ExecuteCommand_INPUT>

  • To pass the command arguments to a shell process that uses the user's default shell:

    <p:ExecuteShellCommand_INPUT xmlns:p="https://schemas.microsoft.com/wbem/wscim/1/cim-schema/2/SCX_OperatingSystem"> <p:Command> uptime |  awk '{print $10}' |awk -F"," '{print $1}' </p:Command> <p:timeout>10</p:timeout> </p:ExecuteShellCommand_INPUT>