TOPS-20 Commands Reference Manual
Disconnects your job from your terminal.
@DETACH (AND) argument
|argument||can be one of these:
Effects of Detached Jobs
Detached jobs use scarce system resources (such as swapping space, process slots, job slots) and can prevent new users from logging in.
Programs Writing to the Controlling Terminal (Device TTY:)
If a program running in a detached job attempts to write to device TTY:, the job will wait until it is again attached to a terminal.
Effect on Terminal
The DETACH command leaves your terminal detached from the system in the state before log-in.
If the system manager enables the hangup-on-DETACH feature, then if a user DETACHes from a DECSYSTEM-20, the system hangs up the terminal line that user was connected to. The job still remains detached, but the user no longer retains a terminal line.
|ATTACH||for joining a detached job to your terminal|
|SYSTAT||for finding out which jobs are detached|
|SUBMIT||for running independent jobs|
|UNATTACH||for disengaging another job from its terminal|
- Detach your job.
@DETACH Detaching job # 16
- Detach your job while starting the program in memory, then log in
@DETACH START Detaching job # 45 BOSTON, TOPS-20 Development System, TOPS-20 Monitor 7(21002) @LOGIN LATTA 341
- Log in and put a program in memory; detach the job while starting this
program, and repeat the entire procedure. Log in a third time and begin
execution of a third program. Interrupt this execution with CTRL/C, then
detach this third job while continuing its program. Now you have three
jobs running at once. Instead of logging in again, attach the first job
(specifying the job number) and verify the system's action.
@LOGIN LATTA 341 Job 5 on TTY230 26-Mar-87 14::09, Last Login 26-Mar-87 11:36:12 @GET DMN @DETACH START Detaching job # 5 BOSTON, TOPS-20 Development System, TOPS-20 Monitor 7(21002) @LOGIN LATTA 341 Job 22 on TTY222 26-Mar-87 14:42:03, Last Login 26-Mar-87 14:38:09 @GET TESTA1 @DETACH START Detaching job # 22 BOSTON, TOPS-20 Development System, TOPS-20 Monitor 7(21002) @LOGIN LATTA 341 Job 53 on TTY222 26-Mar-87 14:44:02, Last Login 26-Mar-87 14:42:03 @EXECUTE TESTF1 FORTRAN: TESTF1 MAIN. LINK: Loading [LNKXCT TESTF1 Execution] ^C @DETACH CONTINUE Detaching job # 53 BOSTON, TOPS-20 Development System, TOPS-20 Monitor 7(21002) @ATTACH LATTA Job 22, Detached, Running DETACH Job 53, Detached, Running DETACH Job: 5 Password:___ EXIT @SYSTAT LATTA 5* 222 EXEC LATTA 22 DET TESTA1 LATTA 53 DET TESTF1 LATTA