Hi,
there is thread related to S32K144 and flash from command line. The principle is very same, just select your MCU in -device argument.
s32k144 command line flash
The pgdbserver console for Power PC is located in
[YOUR_S32DS_INSTALL_PATH]//S32DS_Power_v2017.R1/eclipse/plugins/com.pemicro.debug.gdbjtag.ppc_1.7.5.201807182113/win32
Supported device list you can get by
./pegdbserver_power_console.exe -devicelist
command:

Hope it helps.
Jiri