z/OS UNIX shell environment

In the z/OS® UNIX shell environment, use one of the following to specify the Trace Resolver output location:

For STDOUT , enter the following:
```
export RESOLVER_TRACE=STDOUT
```
If needed, you can redirect STDOUT when the z/OS UNIX command is issued. If your application was compiled with the z/OS C/C++ Language Environment® Native ASCII support or your application uses the FTP Client Application Programming Interface (API) do not use STDOUT. If you use STDOUT with ASCII programs the trace data is not readable. If you use STDOUT with the FTP Client API the client's INIT command will fail. Instead send the trace data to an MVS™ data set or z/OS UNIX file system file as described below.
For a new z/OS UNIX file system file or existing MVS data set, enter the following:
```
export RESOLVER_TRACE=/tmp/myjob.resolv.trace
export RESOLVER_TRACE="//appl.restrace"
```
The user ID is used as the first qualifier for the data set. For example, if USER3 entered this command, user3 would be appended to the data set, as follows:
```
export RESOLVER_TRACE="//'user3.appl.restrace'"
```
To disable the Trace Resolver output, enter the following:
```
set -A RESOLVER_TRACE
```
For a z/OS UNIX file system file or an MVS data set that is already allocated to a ddname:
```
export RESOLVER_TRACE="//dd:ddname"
```
or
```
export RESOLVER_TRACE="dd:ddname"
```