japt, 30 bytes

Result

AC

Duration

1150ms

Code [DL]

Ur"([^T]\{50}) ""$1T")e"K ""KK

stdin

                      T                           
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
          K                                       

stdout

                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
                      T                           
          KKKKKKKKKKKKT                           

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe34d33c30 /* 7 vars */) = 0
12    execve("/bin/cat", ["cat", "-"], 0x560f3d38acf8 /* 7 vars */) = 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    execve("/usr/bin/node", ["/usr/bin/node", "/root/japt-cli.js", "/volume/CODE", "                      T         "...], 0x560f3e0d54b0 /* 7 vars */) = 0
18    +++ exited with 0 +++
17    +++ exited with 0 +++
16    +++ exited with 0 +++
15    +++ exited with 0 +++
14    +++ exited with 0 +++
19    +++ exited with 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=10, si_stime=3} ---
11    +++ exited with 0 +++