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attach
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1990-11-12
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ATTACH
Permits you to switch control of your terminal from your current process to
another process in your job.
The ATTACH command allows you to move quickly between processes that you have
created with the SPAWN command. For example, while you are editing a file, you
can SPAWN a subprocess (MAIL) to read a new mail message.
Enter the ATTACH command to get back to back to the editing session. If you want
to read another new mail message, you can use the ATTACH command to get back to
the MAIL subprocess you already created.
See also <SPAWN>
Format: ATTACH [/PARENT] [process-name]
Parameters: process-name
Indicates the name of the subprocess to which the connection
is to be made. Only the /PARENT qualifier or a process-name
may be specified.
Qualifiers: /PARENT
Allows you to attach to your process' parent process.
If there is no parent process an error message is printed.
Examples:
$ SPAWN MAIL
%DCL-S-SPAWNED, process MAGNANI_3 spawned
%DCL-S-ATTACHED, terminal now attached to process MAGNANI_3
MAIL> ATTACH MAGNANI_2
%DCL-S-RETURNED, control returned to process MAGNANI_2
$ ATTACH MAGNANI
MAIL>
This example shows how to spawn subprocesses (MAGNANI_2 and
MAGNANI_3) to move from MAIL to DCL back to MAIL. The
ATTACH command allows you to transfer control between
subprocesses.
**NOTE**
You always SPAWN a new process and ATTACH to a process that already exists.