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(screen.info)Exec

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Next: Using Exec Up: Subprocess Execution

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Enter node , (file) or (file)node

Exec
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 - Command: exec [[FDPAT] NEWCOMMAND [ARGS ... ]]
     (none)
     Run a unix subprocess (specified by an executable path NEWCOMMAND
     and its optional arguments) in the current window. The flow of
     data between newcommands stdin/stdout/stderr, the process
     originally started (let us call it "application-process") and
     screen itself (window) is controlled by the filedescriptor pattern
     FDPAT.  This pattern is basically a three character sequence
     representing stdin, stdout and stderr of newcommand. A dot (`.')
     connects the file descriptor to screen. An exclamation mark (`!')
     causes the file descriptor to be connected to the
     application-process. A colon (`:') combines both.
     User input will go to newcommand unless newcommand receives the
     application-process' output (FDPATs first character is `!' or `:')
     or a pipe symbol (`|') is added to the end of FDPAT.
     Invoking `exec' without arguments shows name and arguments of the
     currently running subprocess in this window. Only one subprocess
     can be running per window.
     When a subprocess is running the `kill' command will affect it
     instead of the windows process. Only one subprocess a time can be
     running in each window.
     Refer to the postscript file `doc/fdpat.ps' for a confusing
     illustration of all 21 possible combinations. Each drawing shows
     the digits 2, 1, 0 representing the three file descriptors of
     newcommand. The box marked `W' is usual pty that has the
     application-process on its slave side.  The box marked `P' is the
     secondary pty that now has screen at its master side.