Record Case Detail

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 pwd: /out/package
ppid: 23769
   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 $ 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

=================================================================
==23770==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1024 byte(s) in 4 object(s) allocated from:
    #0 0x4dcec8  (/out/package/mumsh_memory_check+0x4dcec8)
    #1 0x51af3a  (/out/package/mumsh_memory_check+0x51af3a)
    #2 0x51a505  (/out/package/mumsh_memory_check+0x51a505)
    #3 0x7f73bfb27b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

Direct leak of 256 byte(s) in 1 object(s) allocated from:
    #0 0x4dcec8  (/out/package/mumsh_memory_check+0x4dcec8)
    #1 0x51af28  (/out/package/mumsh_memory_check+0x51af28)
    #2 0x51a505  (/out/package/mumsh_memory_check+0x51a505)
    #3 0x7f73bfb27b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

SUMMARY: AddressSanitizer: 1280 byte(s) leaked in 5 allocation(s).

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

Notes

Stderr

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JOJ Answer