https://wiki.parsec.com/ 2026-04-26T08:57:11+00:00 https://wiki.parsec.com/ https://wiki.parsec.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2019-02-13T20:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/account_security_-_a_history_and_recommendations?rev=1550090134&do=diff Introduction Considered by many to be “that old legacy operating system,” VMS pioneered many security-oriented design approaches, technologies, methodologies, and practices -- its foundations are strong. In many ways, it has earned its reputation as text/html 2018-09-10T22:31:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/add_color_to_your_terminal_text?rev=1536618667&do=diff Add Color to Your Terminal Text The following works for most modern terminal emulators (ANSI-standards-compliant terminals emulated in software, like Putty, Reflection, TeraTerm and others), but will not work on old (antique) VT100/200/etc. terminals. Those hardware VT-terminals had only single-color phosphors in their cathode-ray tubes (CRTs), like green (hence, text/html 2018-12-03T20:21:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/build_a_vms_chroot_jail?rev=1543868508&do=diff How To Build a VMS chroot jail A VMS sysadmin recently asked us: * “I need a quick and fast way to keep a user only in his/her own directory (SYS$LOGIN), restricting him from changing directory and reading/accessing anything else. Is there a simple flag I can set in AUTHORIZE (SYSUAF)? I don’t want to have to change protections on other directories in the system. Reason for this: We need an external user to be able to login either via text/html 2018-10-23T19:44:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/capture_and_review_vms_boot_startup_scripts?rev=1540323856&do=diff How To Capture and Review VMS Boot Startup Scripts Like that old existential joke about the tree falling in the forest with nobody around to hear it, have you ever wondered what's happening on your OpenVMS system's console terminal during a system reboot when you're not there to look at it? text/html 2018-09-07T22:48:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/capture_dcl_command_output_in_a_file_and_on-screen_simultaneously?rev=1536360512&do=diff How To Capture DCL Command Output to a Text File and On-Screen Simultaneously Ever need to both review some DCL command output on-screen and capture it to a file at the same time? This happens more often than you might guess. For example, you may need to capture some fast-changing VMS state information (like a process in RWAST state), but doing the same command twice-in-a-row may not show the same overall system state (things can change fast). text/html 2018-09-10T21:38:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/clear_your_terminal_screen?rev=1536615509&do=diff How To Clear Your Terminal Screen There you are, happily -- but surreptitiously -- playing away at a vintage game of “Adventure,” when... suddenly, you see the boss approaching! Quick! Don't get caught! How to erase the evidence of your dalliance? text/html 2019-02-12T23:21:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/determine_what_your_auto_action_parameter_is_set_to_on_the_alpha_console_from_the_live_system?rev=1550013670&do=diff Introduction There are times when you need to know what the AUTO_ACTION environmental parameter on Alpha is defined. How would you find out? Details First it's important to understand what the three options are for this parameter: * HALT is clear; whenever the machine gets to the console prompt, it stays there until someone enters a command. text/html 2019-02-01T19:20:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/find_the_filename_when_all_you_have_is_the_file_id?rev=1549048825&do=diff Information There are occasions where you have a File_ID of a file, but not the name. Probably related to $ ANALYZE/DISK errors such as this one: %ANALDISK-W-MULTALLOC, file (3224,22,0) multiply allocated blocks VBN 37225 to 37227 LBN 6934554 to 6934556, RVN 1 text/html 2019-02-07T15:52:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/fun_with_pipes?rev=1549554752&do=diff How To Have Fun With Pipes Here are some DCL command aliases that use the PIPE command and construct, just as examples: Filter through SHOW SYSTEM displays: $ show symbol ssystem SSYS*TEM == "PIPE SHOW SYSTEM | SEARCH sys$pipe " $ $ ssys jones %SEARCH-I-NOMATCHES, no strings matched ! user jones is not logged-in, and no batch jobs $ $ ssys net ! two network processes 2020011E NETACP HIB 10 48 0 00:00:00.01 162 254 20200140 TCPIP$… text/html 2018-12-03T20:08:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/rollover_accounting_datafile?rev=1543867712&do=diff How To Rollover Accounting Datafile 1. Locate and check the size of the current ACCOUNTNG.DAT file: $ SET DEFAULT SYS$MANAGER $ DIRECTORY /SIZE /DATE /PROTECTION ACCOUNTNG.DAT Directory SYS$SYSROOT:[SYSMGR] ACCOUNTNG.DAT;47 1062237 21-JUN-2018 10:53:56.21 (RWED,RWED,RE,) ACCOUNTNG.DAT;46 1322520 4-FEB-2018 08:38:01.44 (RWED,RWED,RE,) ACCOUNTNG.DAT;29 3232751 20-SEP-2016 13:25:12.69 (RWED,RWED,RE,) Total of 3 files, 5617508 blocks. text/html 2018-12-03T20:07:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/rollover_operators_logfile?rev=1543867630&do=diff How To Rollover Operator's Logfile 1. Locate and check the size of the current OPERATOR.LOG file: $ SET DEFAULT SYS$MANAGER $ DIRECTORY /SIZE /DATE /PROTECTION OPERATOR.LOG Directory DSA2:[COMMON] OPERATOR.LOG;379 51904 17-NOV-2018 08:46:13.29 (RWED,RWED,RE,) OPERATOR.LOG;378 59 17-NOV-2018 08:16:23.24 (RWED,RWED,RE,) OPERATOR.LOG;377 45 17-NOV-2018 08:02:09.28 (RWED,RWED,RE,) OPERATOR.LOG;376 45 17-NOV-2018 07:50:00.22 (RWED,RWED,RE,) OPERATOR.LOG;3… text/html 2025-11-04T22:33:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/rollover_security_audit_journal_file?rev=1762295627&do=diff How To Rollover Security Audit Journal File 1. Locate and check the size of the current SECURITY.AUDIT$JOURNAL file: $ SET DEFAULT SYS$MANAGER $ DIRECTORY /SIZE /DATE /PROTECTION SECURITY.AUDIT$JOURNAL Directory SYS$COMMON:[SYSMGR] SECURITY.AUDIT$JOURNAL;18 271030 1-AUG-2018 10:03:56.14 (RWED,RWED,RE,) SECURITY.AUDIT$JOURNAL;17 636538 4-FEB-2018 08:37:07.26 (RWED,RWED,RE,) Total of 2 files, 907568 blocks. text/html 2018-12-03T20:07:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/rollover_system_errlog?rev=1543867666&do=diff How To Rollover System ErrLog 1. Locate and check the size of the current ERRLOG.SYS file: $ SET DEFAULT SYS$ERRORLOG $ DIRECTORY /SIZE /DATE /PROTECTION ERRLOG*.* Directory SYS$SYSROOT:[SYSERR] ERRLOG.OLD;15 4374 22-DEC-2017 11:26:05.97 (RWED,RWED,RE,) ERRLOG.OLD;14 97 8-DEC-2017 11:26:04.89 (RWED,RWED,RE,) ERRLOG.OLD;13 219 17-MAY-2010 16:42:34.30 (RWED,RWED,RE,) ERRLOG.SYS;1 282 9-NOV-2018 09:50:42.14 (RWED,RWED,RE,) Total of 4 file… text/html 2022-03-02T22:35:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/rollover_vms_logfiles?rev=1646260502&do=diff How To Rollover VMS Logfiles There are four major VMS logfiles that should be rolled-over, or refreshed, on a periodic basis, from both a disk space management perspective and from an ease of use (for the system administrator) perspective. These files are (shown in their text/html 2025-01-14T16:27:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/use_ldann_logical_disks?rev=1736872045&do=diff How To Use LDAnnn: Logical Disks Logical Disks, presented in OpenVMS as LDAnnn: devices, are one of the operating system's best-kept secrets, even though there's really no conspiracy. Implemented as a Files-11 file system inside of a “container file, text/html 2022-05-24T23:29:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.parsec.com/howto/what_are_the_various_options_for_backing_up_openvms_data?rev=1653434995&do=diff NOTE: This is a work in progress. Please forgive the incompleteness until it's final result. If you have ideas or comments, please send us email and we'll be happy to review them. INTRODUCTION There are a wide variety of ways to back data up on an OpenVMS system. This wiki page will provide the basic concepts of how each mechanism works and provide pointers to more detailed information on how to perform each of these techniques yourself.