Record Case Detail

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

 pwd: /out/package
ppid: 4934
   1: WRITELN "echo" "123
   2: WRITELN |" |
   3: WRITELN cat > 1.txt
   4: WRITELN cat 1.txt
   5: WRITELN ls
exit: 0

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.

mumsh $ mumsh $ /in/mumsh.c:277:11: runtime error: null pointer passed as argument 1, which is declared to never be null
/usr/include/unistd.h:582:14: note: nonnull attribute specified here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/mumsh.c:277:11 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==4938==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fd59205d4b0 bp 0x7ffe1b05fff0 sp 0x7ffe1b05ff60 T0)
==4938==The signal is caused by a READ memory access.
==4938==Hint: address points to the zero page.
    #0 0x7fd59205d4af  (/lib/x86_64-linux-gnu/libc.so.6+0xe54af)
    #1 0x5178cd  (/out/package/mumsh_memory_check+0x5178cd)
    #2 0x7fd591f99b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41cff9  (/out/package/mumsh_memory_check+0x41cff9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0xe54af) 
==4938==ABORTING
/in/mumsh.c:277:11: runtime error:

mumsh $ > > mumsh $ 123
|
mumsh $ 1.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit

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JOJ Answer