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drawterm, rio and stats


Command 9front Drawterm output
$ ./drawterm --helpusage: drawterm [-GBO] [-h host] [-u user] [-a authserver] [-s secstore] [-e 'crypt hash'] [-k keypattern] [-p] [-t timeout] [-r root] [-c cmd ...]
9front Drawterm option 9front Drawterm option description
-G Start drawterm in text-only mode (no graphics).
-B Disable kbdfs.
-O Use the old cpu(1) to connect to the cpu server rather than rcpu(1).
-p Aan is usually run automatically through the -p option or rimport, rexport, and rcpu(1); protect the connection against connection resets by establishing aan(8) tunnel.
-t Add -t timeout-in-seconds, if more than the default (24 hours/86400 seconds) is needed; set the timeout for aan(8) to a value in seconds (default is one day).
-r Specifies the root directory on the client. The default is /root and all further paths are relative thereto.
aan, aanuke - always available network
AAN: Aan tunnels traffic between a client and a server through a persistent network connection.
AANUKE: Aanuke prints commands that will cause all processes called aan that are owned by the current user and do not have an active tcp connection to be terminated. The aanuke prints commands that look like the slay commands, in the mentioned slay example.
1Plan 9 Boot Camp private VPS tutorial section:
VPS$ ./drawterm -a YOUR_IP -h YOUR_IP -u glenda
2Plan 9 Boot Camp tutorial section:
9p…$ ./drawterm -a -h -u USER

After typing your Drawterm password, the initial Rio display is a blank grey screen. The passing cpu: failed to chdir to message is not uncommon.

At the Rio blank grey screen, press the right button of your mouse. A menu should appear. Then, release the button over the “New” option.

There is a “Delete” option (above) in addition to the “New” option. This “Delete” option is useful. It will delete a window gracefully.

Now, press the right button again near the upper-left corner of Drawterm, and drag the mouse to the lower-right before releasing the button, drawing a rectangle.

You should now have a Rio terminal window, and rc prompt (%). The first thing you can do is to type ”cat“ (or read it from here if it's missing).

Drawterm1 is essentially a BLIT terminal emulator which allows you to connect to your Plan 9 system and load the Rio windowing system. Rio is a direct successor of UNIX 'layers' and Plan 9 '8½'.

Although missing from the ”$ ./drawterm --help“ output, the ”-r /path/to/local/directory“ option will show the ”/path/to/local/directory“ files in ”/mnt/term“. Example: “$ ./drawterm -a YOUR_IP -c YOUR_IP -u glenda -r /path/to/local/directory”.

Verify the Drawterm command line syntax with the ”--help“ option, if needed. A 9front2 Drawterm comparison is provided.

Plan 9 Drawterm command Plan 9 Drawterm output
$ ./drawterm --helpusage: drawterm [-a authserver] [-c cpuserver] [-s secstore] [-u user]
9front Drawterm command 9front Drawterm option -h and Plan 9 Drawterm option -c comparison
$ ./drawterm --helpusage: drawterm [-a authserver] [-h cpuserver] [-s secstore] [-u user]
9front Drawterm command 9front Drawterm output
$ ./drawterm --helpusage: drawterm [-GBO] [-h host] [-u user] [-a authserver] [-s secstore] [-e 'crypt hash'] [-k keypattern] [-p] [-t timeout] [-r root] [-c cmd ...]

1 Drawterm is a X11 application that allows one to connect to a remote Plan 9 server…; a graphical client for Plan 9 CPU servers. 2 DRAWTERM


RIOusage:rio [-b] [-f font] [-i initcmd] [-k kbdcmd] [-s]
RIOIntroduction to Rio
xrio customization
xWhen you have found a window layout that you like, you might like that persisted between sessions, so that you don't have to place the windows again. We can start rio using multiple ways. When we drawterm in our 9front vps the $home/lib/profile script is executed. Since the service type (echo $service) is of type cpu we see that rio is started as rio -i riostart . Looking at the manual page we see that the -i option takes certain “window” commands that instruct rio in what positions to load the windows and which application to run in them, it also mentions the wloc command which prints the window layout for the current session. By putting the contents of wloc in the $home/bin/rc/riostart script then we can have a persistent layout on all rio sessions.


STATSusage:stats -lmisce
  cpu% stats -lmisce

A winwatch -e stats note:

  cpu% winwatch -e '^(winwatch|stats|faces)'


Command reminder (includes screenshot section)
vps_-_plan9front_-_drawterm_rio_and_stats.1655176134.txt.gz · Last modified: 2022/06/14 03:08 by hc9