wake, 56 bytes

Result

AC

Duration

1000ms

Code [DL]

all:$<
(.*T\D{50}) (.*):$1T$2
(.*K) (.*):$1K$2
(.*):"$1"

stdin

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                                           K      

stdout

                                               T  
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                                           KKKKT  

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffc45db01e0 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55d2cb8f3d70 /* 9 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    execve("/usr/local/ruby-2.6.3/bin/ruby", ["/usr/local/ruby-2.6.3/bin/ruby", "/root/waker.rb", "/volume/CODE"], 0x55d2cbb68068 /* 9 vars */) = 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=10, si_stime=4} ---
10    +++ exited with 0 +++