starry, 129 bytes

Result

AC

Duration

902ms

Code [DL]

` , + + .        +    *'     + `          + +  * +*  `  + + ,* + .       +    **  +      + * +  ' ,*    +  + + .  + +       + * '

Disassembly

[[:label, 0],
 [:char_in],
 [:dup],
 [:dup],
 [:char_out],
 [:push, 3],
 [:%],
 [:jump, 0],
 [:push, 0],
 [:label, 1],
 [:push, 5],
 [:dup],
 [:*],
 [:dup],
 [:+],
 [:label, 2],
 [:swap],
 [:dup],
 [:char_in],
 [:+],
 [:dup],
 [:char_out],
 [:push, 2],
 [:%],
 [:+],
 [:swap],
 [:push, 1],
 [:-],
 [:dup],
 [:jump, 2],
 [:char_in],
 [:+],
 [:pop],
 [:swap],
 [:dup],
 [:char_out],
 [:swap],
 [:dup],
 [:push, 2],
 [:-],
 [:jump, 1]]

stdin

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                   K                              

stdout

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                   K!"""""""""""""T

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffd1b93e970 /* 9 vars */) = 0
12    execve("/bin/cat", ["cat", "-"], 0x558457456d70 /* 9 vars */ <unfinished ...>
13    execve("/usr/local/ruby-2.6.3/bin/ruby", ["/usr/local/ruby-2.6.3/bin/ruby", "/root/starry.rb", "/volume/CODE"], 0x55845782b068 /* 9 vars */ <unfinished ...>
12    <... execve resumed> )            = 0
13    <... execve resumed> )            = 0
12    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=6, si_stime=3} ---
11    +++ exited with 0 +++