Record Case Detail

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

 pwd: /out/package
ppid: 94419
   1: WRITELN echo 123 > 1.txt
   2: WRITELN echo 321 > 2.txt
   3: WRITELN cat < 1.txt | cat >> 2.txt
   4: WRITELN cat 1.txt
   5: WRITELN cat 2.txt
   6: WRITELN ls
   7: 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 $ 123
cat: '|': No such file or directory
cat: cat: No such file or directory
cat: '>>': No such file or directory
321
mumsh $ /in/read.c:16:27: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned long'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/read.c:16:27 in 
/in/read.c:16:5: runtime error: addition of unsigned offset to 0x7ffd5b219420 overflowed to 0x7ffd5b21941f
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/read.c:16:5 in 
=================================================================
==94420==ERROR: AddressSanitizer: stack-buffer-underflow on address 0x7ffd5b21941f at pc 0x00000051bdde bp 0x7ffd5b219370 sp 0x7ffd5b219368
WRITE of size 1 at 0x7ffd5b21941f thread T0
    #0 0x51bddd  (/out/package/mumsh_memory_check+0x51bddd)
    #1 0x515571  (/out/package/mumsh_memory_check+0x515571)
    #2 0x7f9544219b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41ce79  (/out/package/mumsh_memory_check+0x41ce79)

Address

mumsh $ mumsh $ mumsh $ mumsh $ 123
mumsh $ 321
123
mumsh $ 1.txt
2.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit

Notes

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JOJ Answer