I found below sentences from an IR document,In above sentence, can I use "is" at the position of "was"? and why?
To determine whether the SCI tools are installed on the IR system, at the Unix prompt, enter pkginfo sc
If the SCI tools are not installed on the IR, the system displays the following message:
UX:pkginfo: ERROR: information for sc was not found
This is a Passive Voice for Simple Past, which means something that happened before.
Information for sc was not found
This is a Passive Voice for Simple Present, which means something that happens everyday.
Information for sc is not found