Record Case Detail

This function is in beta test. Please help improve it in the issues here.

 pwd: /out/package
ppid: 99923
   1: WRITELN echo 321 > 1.txt
   2: WRITELN cat <
   3: WRITELN 1.txt
   4: WRITELN ls
   5: WRITELN exit

Your answer may be identical to the JOJ answer in the first several lines.

However, you will still get Wrong Answer because the complete output may be longer and there might be errors in the future lines.

Please double check your code to solve this problem and try again.

AddressSanitizer:DEADLYSIGNAL
=================================================================
==99924==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f53f7ddcbab bp 0x631000014800 sp 0x7fffede55880 T0)
==99924==The signal is caused by a READ memory access.
==99924==Hint: address points to the zero page.
    #0 0x7f53f7ddcbaa  (/lib/x86_64-linux-gnu/libc.so.6+0x7ebaa)
    #1 0x51acb7  (/out/package/mumsh_memory_check+0x51acb7)
    #2 0x5156a5  (/out/package/mumsh_memory_check+0x5156a5)
    #3 0x7f53f7d7fb96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #4 0x41cdd9  (/out/package/mumsh_memory_check+0x41cdd9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0x7ebaa) 
==99924==ABORTING

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

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JOJ Answer