pwd: /out/package
ppid: 4004
   1: WRITELN echo 321 > 1.txt
   2: WRITELN cat <
   3: WRITELN 1.txt
   4: WRITELN ls
   5: WRITELN exit
exit: 0

mumsh $ mumsh $ > 321
mumsh $ 1.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit

mumsh $ mumsh $ > 321
mumsh $ 1.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit