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Small OpenVMS titbits
Published: 22-04-2018 | Author: Remy van Elst | Text only version of this article
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Here are some small titbits I found out this week on the DECUServe OpenVMS system. Not enough to write a blogpost on their own, but collected together.
To show your shell history from the current session:
1 show proc 2 proc 3 htop 4 top 5 notes 6 t 7 hobbyist 8 hobbyi 9 show license 10 show terminal 11 set terminal /backspace=delete 12 show terminal 13 set terminal /backspace=backspace 14 show terminal 15 hello this is a test $
Uptime and /etc/redhat_release
To view system uptime and OpenVMS version:
$ SHOW SYSTEM /NOPROC
OpenVMS V8.4-2L2 on node EISNER 8-APR-2018 14:13:11.07 Uptime 17 03:22:55
Show all the logged in users and their process, like the
w command on linux:
$ SHOW USERS /FULL OpenVMS User Processes at 8-APR-2018 14:19:05.07 Total number of users = 6, number of processes = 6 Username Process Name PID Terminal <login> _VTA4425: 00009B23 VTA4425: (disconnected) EXAMPLE SSHD 0355A PTD 00008EE4 FTA550: (ssh/$IP:57039) GOATLEY Goat Busters 00009A55 FTA547: (ssh/$HOSTNAME.com:17251) JACKSON JACKSON 00005314 FTA269: (ssh/host-$IP.static.as$AS.net:59656) MALMBERG >>>B ewa0: 00009664 FTA543: (ssh/$IP:59826) SCHENKENBERG SCHENKENBERG 00007E83 FTA442: (ssh/ool-$HOSTNAME:47078)
Your home directory on OpenVMS is not known as
~ (as on UNIX) but as
SYS$LOGIN. As we learned in an earlier article, OpenVMS uses the
DEFAULT commands to navigate directories. So the equivalent of
cd ~ on linux,
or even shorter,
SET DEF SYS$LOGIN:
$ SET DEFAULT SYS$LOGIN $ SHOW DEF DISK_USER:[DECUSERVE_USER.EXAMPLE] $ DIR SYS$LOGIN Directory EISNER$DRA3:[DECUSERVE_USER.EXAMPLE] $MAIN.TPU$JOURNAL;1 .VIMINFO;1 A.;1 ICREATEDAFOLDERYAY.DIR;1 LOGIN.COM;2 LOGIN.COM;1 LOGIN_COM.TPU$JOURNAL;1 MAIL$AC8D2981000500B2.MAI;1 MAIL.MAI;1 NOTES$NOTEBOOK.NOTE;1 RAYMII.DIR;1 REMY.DAT;3 REMY.DAT;2 REMY.DAT;1 SSH.DIR;1 SSH2.DIR;1 SSH3.DIR;1 WWW.DIR;1 Total of 18 files.
The equivalent of the
cd .., to go up one folder on linux, on OpenVMS is
[-]. So if you are in
EISNER$DRA3:[DECUSERVE_USER.EXAMPLE.WWW] and want to
go up one level to
EISNER$DRA3:[DECUSERVE_USER.EXAMPLE] then enter:
$ SET DEFAULT [-]
%SYSTEM-F-ACCVIO, access violation,
I also hit my first bug. I was writing a note (in
NOTES, a kind of forum) and
I pasted a link. It crashed with the following error:
Fatal DECTPU internal error, please submit an SPR including: 1. A description of the actions that revealed the bug 2. The versions of DECTPU and the operating system you are running 3. Machine-readable media containing: - The source files of your DECTPU section and command files - Copies of the data files used during the session - The keystroke journal file if one exists 4. Your terminal characteristics, if applicable 5. A description of the command used to invoke DECTPU Shareable base: 7BC54884 Ident: DECTPU V3.2 2017-05-22 22:49 Updater base: 7C03E034 Ident: DECTPU V3.2 2017-05-22 22:49 Updater file: TPU$CCTSHR %SYSTEM-F-ACCVIO, access violation, reason mask=00, virtual address=0000000000000024, PC=00000000000B5A14, PS=0000001B $
So I retyped the note and pasted the error in, maybe someone knows more.
Edit: they know more on the DECUS system. This happens when you CRTL+C out of the NOTES application.
MAIL, folders and mail management
See this article as well.
MAIL> dir MAIL # From Date Subject 1 EISNER::CORNELIUS 29-MAR-2018 Hello again 2 (Deleted) 3 EISNER::CORNELIUS 31-MAR-2018 RE: Hello again 4 EISNER::PARRIS 2-APR-2018 RE: Test message MAIL>
MAIL> DIR /FOLDER Listing of folders in EISNER$DRA3:[DECUSERVE_USER.EXAMPLE]MAIL.MAI Press CTRL/C to cancel listing MAIL TEST MAIL>
List mail in folder
MAIL> dir TEST TEST # From Date Subject 1 IN%"email@example.com" 31-MAR-2018 RE: Tesrt message MAIL>
DIR will list the
Move message into a folder
To store a message in a folder, use the
FILE command in the
MAIL> file test Folder TEST does not exist. Do you want to create it (Y/N, default is N)? y %MAIL-I-NEWFOLDER, folder TEST created MAIL>
As you can see, if the folder does not exist, it will be created.
Delete a message
On most OpenVMS systems the
WASTEBASKET is purged when the you use the
EXIT to exit
QUIT, the old, deleted
mail remains in the
WASTEBASKET. If you're in a hurry to purge the
WASTEBASKET, then you can do it manually with the
MAIL> dir TEST TEST # From Date Subject 1 IN%"firstname.lastname@example.org" 31-MAR-2018 RE: Tesrt message MAIL> del 1 MAIL> dir WASTEBASKET WASTEBASKET # From Date Subject 1 IN%"email@example.com" 31-MAR-2018 RE: Tesrt message MAIL> purge %MAIL-I-DELMSGS, 1 message deleted
Mail filesystem folder
By default all mail related files are stored in your home directory. This can
become quite a full listing, you can change it to another folder. In the
MAIL> SET MAIL [.MAIL] %MAIL-I-CREATED, DISK_USER:[DECUSERVE_USER.EXAMPLE.MAIL] created
Now mail related files will be placed in
[.MAIL] and your home directory will
stay a bit cleaner.
ls -la (list files, owner and permissions)
DIR command, two flags can be given,
get a more comprehensive list including the file owner and permissions:
$ DIR /OWNER /PROTECTION Directory DSA3:[DECUSERVE_USER.EXAMPLE] $MAIN.TPU$JOURNAL;1 [EXAMPLE] (RWED,RWED,,) .VIMINFO;1 [EXAMPLE] (RWED,RWED,,) A.;1 [EXAMPLE] (RWED,RWED,,) ICREATEDAFOLDERYAY.DIR;1 [EXAMPLE] (RWE,RWE,,) LOGIN.COM;2 [EXAMPLE] (RWED,RWED,,) LOGIN.COM;1 [EXAMPLE] (RWED,RWED,,) LOGIN_COM.TPU$JOURNAL;1 [EXAMPLE] (RWED,RWED,,) MAIL.DIR;1 [EXAMPLE] (RWE,RWE,,) NOTES$NOTEBOOK.NOTE;1 [DECUSERVE] (RWE,RWE,,) RAYMII.DIR;1 [EXAMPLE] (RWE,RWE,,) REMY.DAT;3 [EXAMPLE] (RWED,RWED,,) REMY.DAT;2 [EXAMPLE] (RWED,RWED,,) REMY.DAT;1 [EXAMPLE] (RWED,RWED,,) SSH.DIR;1 [EXAMPLE] (RWE,RWE,,) SSH2.DIR;1 [EXAMPLE] (RWE,RWE,,) SSH3.DIR;1 [EXAMPLE] (RWE,RWE,,) WWW.DIR;1 [EXAMPLE] (RWE,RWE,,RE) Total of 17 files.
The permission column includes in order:
- SYSTEM (root)
- OWNER (you)
- GROUP (groups you are part of)
- WORLD (everyone)