rprogn, 58 bytes

Result

AC

Duration

1070ms

Code [DL]

read
1
w{
read
"\]p\]]$e¿'K'f''\m]wL\'T'f1+\-X\mw}"
-0
}

stdin

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                                K                 

stdout

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                                XXXXXXXXXXXXXXXX

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe9e21c810 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x560d66a4ad60 /* 8 vars */) = 0
12    execve("/usr/bin/lua5.3", ["/usr/bin/lua5.3", "main.lua", "/volume/CODE"], 0x560d66f41068 /* 8 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
10    +++ exited with 0 +++