VM settings:
    Max. Heap Size (Estimated): 7.79G
    Using VM: OpenJDK 64-Bit Server VM

Armed Bear Common Lisp 1.7.1-dev
Java 11.0.7 Oracle Corporation
OpenJDK 64-Bit Server VM
Low-level initialization completed in 0.205 seconds.
Startup completed in 1.224 seconds.
Type ":help" for a list of available commands.
CL-USER(1): (sys:run-program "ls" nil :wait nil)
#S(SYSTEM:PROCESS :JPROCESS #<java.lang.ProcessImpl Process[pid=125, exitValue=0] {1E464845}> :%INPUT #S(SYSTEM::SYSTEM-STREAM) :%OUTPUT #S(SYSTEM::SYSTEM-STREAM) :%ERROR #S(SYSTEM::SYSTEM-STREAM))
CL-USER(2): (sys:process-pid *)
#<THREAD "interpreter" {7278E1D6}>: Debugger invoked on condition of type ERROR
  Class not found: java.lang.UNIXProcess
Restarts:
  0: TOP-LEVEL Return to top level.
[1] CL-USER(3): 0
CL-USER(4): (exit)