DB<3> x (system {'jxdDoesNotExist'} 'jxdDoesNotExist'), $?, $!, $^E
0  65280
1  65280
2  'No such file or directory'
3  'The system cannot find the file specified'

 DB<4> x (system 'jxdDoesNotExist'), $?, $!, $^E
'jxdDoesNotExist' is not recognized as an internal or external command,
operable program or batch file.
0  256
1  256
2  'No such file or directory'
3  'Access is denied'