Record Case Detail

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

 pwd: /out/package
ppid: 30268
   1: WRITELN echo 123 > 1.txt
   2: WRITELN echo 222 > 2.txt
   3: WRITELN echo 321 > 4.txt
   4: WRITELN <1.txt >3.txt cat 2.txt 4.txt
   5: WRITELN cat 1.txt
   6: WRITELN cat 2.txt
   7: WRITELN cat 3.txt
   8: WRITELN cat 4.txt
   9: WRITELN ls
  10: 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.

mumsh $ mumsh $ mumsh $ mumsh $ main.c:397:21: runtime error: index -1 out of bounds for type 'char [1024]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior main.c:397:21 in 
=================================================================
==30269==ERROR: AddressSanitizer: stack-buffer-underflow on address 0x7ffe113874bf at pc 0x00000051e419 bp 0x7ffe11387490 sp 0x7ffe11387488
READ of size 1 at 0x7ffe113874bf thread T0
    #0 0x51e418  (/out/package/mumsh_memory_check+0x51e418)
    #1 0x7f20112deb96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #2 0x41ccf9  (/out/package/mumsh_memory_check+0x41ccf9)

Address 0x7ffe113874bf is located in stack of thread T0 at offset 31 in frame
    #0 0x515d6f  (/out/package/mumsh_memory_check+0x515d6f)

  This frame has 10 object(s):
    [32, 1056) 'line' <== Memory access at offset 31 underflows this variable
    [1184, 1192) 'fd_pipe'
    [1216, 1224) 'fd_pwd'
    [1248, 2272) 'pre_dir'
    [2400, 3424) 'remain'
    [3552, 4576) 'temp'
    [4704, 5728) 'buf'
    [5

mumsh $ mumsh $ mumsh $ mumsh $ mumsh $ 123
mumsh $ 222
mumsh $ 222
321
mumsh $ 321
mumsh $ 1.txt
2.txt
3.txt
4.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit

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JOJ Answer