github.com/containers/podman/v5@v5.1.0-rc1/docs/source/markdown/options/attach.md (about)

     1  ####> This option file is used in:
     2  ####>   podman create, run
     3  ####> If file is edited, make sure the changes
     4  ####> are applicable to all of those.
     5  #### **--attach**, **-a**=*stdin* | *stdout* | *stderr*
     6  
     7  Attach to STDIN, STDOUT or STDERR.
     8  
     9  In foreground mode (the default when **-d**
    10  is not specified), **podman run** can start the process in the container
    11  and attach the console to the process's standard input, output, and
    12  error. It can even pretend to be a TTY (this is what most command-line
    13  executables expect) and pass along signals. The **-a** option can be set for
    14  each of **stdin**, **stdout**, and **stderr**.