CA SystemEDGE User Guide › Custom MIB Objects › Extension Scripts

Extension Scripts

The SystemEDGE agent places very few constraints on the operation of extension scripts. It does, however, require the following:

• All operations (Set, Get, or GetNext) must have output. The output of Set invocations should echo the value that was actually set, while the output of Get and GetNext should be the object's value. If there is no output, the SNMP query fails.
• Output from extension scripts is only parsed up through the first newline character. If the first character is a newline, the output is considered NULL, causing the SNMP query to fail and returning an error.

Note: Because the SystemEDGE agent runs as root or administrator, make sure that all commands and scripts use absolute pathnames, are fully debugged, and contain no ambiguous code or unnecessary options.

On Windows systems, you can use batch files for writing extension scripts. The agent can directly run those batch files. However, batch file functionality is severely limited. Use Perl and other scripting languages instead for Windows.