Record Case Detail

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 pwd: /out/package
ppid: 70523
   1: WRITELN echo 123 > 1.txt
   2: WRITELN echo 222 > 2.txt
   3: WRITELN echo 321 > 4.txt
   4: WRITELN cat < 1.txt 2.txt > 3.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 $ echo 123 > 1.txt输出重定向指令输入有误!mumsh $ echo 222 > 2.txt输出重定向指令输入有误!mumsh $ echo 321 > 4.txt输出重定向指令输入有误!mumsh $ cat < 1.txt 2.txt > 3.txt 4.txt输出重定向指令输入有误!mumsh $ cat: 1.txt: No such file or directory
cat 1.txtError: Operation not permitted
mumsh $ cat: 2.txt: No such file or directory
cat 2.txtError: Operation not permitted
mumsh $ cat: 3.txt: No such file or directory
cat 3.txtError: Operation not permitted
mumsh $ cat: 4.txt: No such file or directory
cat 4.txtError: Operation not permitted
mumsh $ driver
mumsh
mumsh_memory_check
lsmumsh $ exitexit

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