HP OpenVMS DCL Dictionary
Transfers control from your current process (which then hibernates) to
the specified process.
The ATTACH and SPAWN commands cannot be used if your terminal
has an associated mailbox.
Specifies the name of a parent process or spawned subprocess to which
control passes. The process must already exist, be part of your current
job, and share the same input stream as your current process. However,
the process cannot be your current process or a subprocess created with
the /NOWAIT qualifier.
Process names can contain from 1 to 15 alphanumeric characters. If a
connection to the specified process cannot be made, an error message is
The process-name parameter is incompatible with the
The ATTACH command allows you to connect your input stream to another
process. You can use the ATTACH command to change control from one
subprocess to another subprocess or to the parent process.
When you enter the ATTACH command, the parent or "source"
process is put into hibernation, and your input stream is connected to
the specified destination process. You can use the ATTACH command to
connect to a subprocess that is part of a current job left hibernating
as a result of the SPAWN/WAIT command or another ATTACH command as long
as the connection is valid. (No connection can be made to the current
process, to a process that is not part of the current job, or to a
process that does not exist. If any of these connections are attempted,
an error message is displayed.)
You can also use the ATTACH command in conjunction with the SPAWN/WAIT
command to return to a parent process without terminating the created
subprocess. See the description of the SPAWN command for more details.
Specifies the process identification (PID) of the process to which
terminal control will be transferred. Leading zeros can be omitted. The
/IDENTIFICATION qualifier is incompatible with the
If you omit the /IDENTIFICATION qualifier, you must specify a process
The ATTACH command transfers the terminal's control to the subprocess
The ATTACH command switches control from the current process to a
process having the PID 30019. Notice that because the /IDENTIFICATION
qualifier is specified, the process-name parameter is omitted.