goruby, 38 bytes

Result

WA

Duration

945ms

Code [DL]

$_,*b,c=*$<;b.e{pr};s c.rs.lj~/T/+1,?a

stdin

                    T                             
                                                  
                                                  
                                                  
                                                  
                                                  
            K                                     

stdout

            Kaaaaaaaa

stderr

<internal:golf_prelude>:4: warning: redefining Object#method_missing may cause infinite loop

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffc48bb8050 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x56264d300d30 /* 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("/root/goruby", ["/root/goruby", "/volume/CODE"], 0x56264d300d40 /* 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=7, si_stime=3} ---
10    +++ exited with 0 +++