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‘vi’ and 'vim' text editors

Notes:

  • When typing text, press <ESC> once finished. In case you’re blocked, press also <ESC> before executing commands described below
  • both editors use case sensitive commands

Request

Command

To quit without saving

Press ‘:’ then enter ‘q!’

To quit with saving

Press ‘:’ then enter ‘x’ or ‘wq’

Go to  top of file

Press ‘:’ then enter ‘0’

Go to last line

Press ‘G’

Search pattern

Press ‘/’ then enter your search text. Press then ‘n’ for next (forward) or ‘N’ for backward

Remove current character

Press ‘x’

Insert text

Press ‘i’ (press ESC once text completed)

Insert line

Press ‘o’ for a line below cursor, ‘O’ for a line above cursor (press ESC once text completed)

Delete a line

Press ‘dd’

 


‘gedit’ graphical editor

‘gedit’ is a graphical text editor, users familiar with Windows notepad should not encounter difficulties to use it.

Request

Command

To quit

close the window by clicking on the cross top right corner

Save file

Press <CTRL-S>

...


‘nano’ text editor

‘nano’ is a basic text editor, very simple to use and displaying available commands at the bottom of the screen. For example, to leave ‘nano’ , use ^X (press CTRL + X) 


How to setup ‘ssh’ trusts between Linux and Tru64

Info
titleNotes
  • The prompts will tell you where to execute the commands, "Tru64#" (root user) or "Linux#"  (root user)
  • Remember Linux/Unix is case sensitive
  • If hosts are not known by each other, fill the /etc/hosts file for example (using vi for example)
  • linuxhost represents the name of your CHARON server (can be any name you want)
  • tru64host represents the hostname of your Tru64 virtual machine

...


  • Generate the key

Linux# cd /root/.ssh
Linux# ssh-keygen -t rsa

→ Do not specify a passphrase
Linux# ssh-keygen -e -f id_rsa.pub > linuxhost.pub

 


  • Copy the linuxhost.pub file, or use copy/paste, in the /.ssh2 folder on the Tru64 host

  • Define the authorization file:

Tru64# cd /.ssh2
Tru64# echo "Key linuxhost.pub" >> authorization

...


  • Initialize the first ssh connection (answer 'yes' to confirm)

...

(lightbulb) If an error occurs, you can check and clean the /root/.ssh/known_host file on the Linux host

How to setup ‘ssh’ trusts between Linux and VMS

Info
titleNotes
  • The prompts will tell you where to execute the commands, "VMS$" (system user) or "Linux#"  (root user)
  • Remember Linux/Unix is case sensitive, VMS is not
  • Linux: if VMS host is not known, add it to /etc/hosts for example
  • VMS: if Linux is not known, add it using: $ UCX SET HOST LINUX /ADDR=xx.xx.xx.xx

 


  • Enable SSH on the VMS server:

    VMS$ SET DEF SYS$LOGIN
    VMS$ @TCPIP$CONFIG

...

  • Copy the generated file /root/.ssh/linuxserver.pub (or use copy/paste between putty session for example) to the VMS system in the SYS$SYSROOT:[SYSMGR.SSH2] directory
    (lightbulb) If this folder does not exist, create it using the following command: $ CREATE /DIRECTORY SYS$SYSROOT:[SYSMGR.SSH2]

...


  • On the VMS system add the Linux server key to the authorized keys:

    VMS$ SET DEF SYS$SYSLOGIN
    VMS$ SET DEF SYS$SYSROOT:[.SSH2]
    VMS$ OPEN/WRITE TMP AUTHORIZATION.

    (warning) If the file already exists, use /APPEND instead of /WRITE
    VMS$ WRITE TMP "KEY LINUXSERVER.PUB"
    VMS$ CLOSE TMP

    (warning) Do not forget the dot at the end of the authorization file name

...


  • Perform some tests (examples)
    (info) Charon server name "charon", vms system name "pluto":

    charon# ssh system@pluto "show system /noproc"
    OpenVMS V7.3-2 on node PLUTO 27-SEP-2013 11:50:14.37 Uptime 0 19:20:07
 
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Shutdown guests with Expect tool

Introduction

In case SSH cannot be used to perform clean shutdown of the guests, the "expect" tool can be used to connect to the console, perform the login operation and execute the shutdown command depending on the console status (at login prompt, shell prompt or SRM prompt)

...

Warning

Console locked:

Any active session to the console must be killed before the "expect" script is executed.

(info) For example, if you are connected via "telnet" on the localhost/port (the kill is not done inside the expect script). See examples in the "/opt/charon/utils/charon_gstart.stop.example" file.

(warning) If the console is locked from another host (if you use putty for example), you will have to cancel the connection by yourself otherwise the shutdown will not be performed cleanly.

...


This script can handle the following situations:

  • No user connected on the console:
    • Expect: "Username: " (VMS) or "login: " (Tru64)
    • Action: An interactive session will be initiated based on <user> and <password> provided in the parameters
  • A user is connected on the console:
    • Expect: <prompt> provided in the parameters
    • (warning) This user must have privileges to perform shutdown as no logout will be issued
    • Action: Depending on the Operating system parameter (see <opsys> below), the shutdown command will be sent
  • Console is at SRM prompt:
    • Expect: ‘>>>’ (so works with VAX and Alpha with "P00>>>")
    • Action: A 'power off' command will be issued. If the command is not recognized, the F6 key will be sent (this must be enabled within the configuration file). If the F6 key did not stop the emulator, the script will exit with error code 9 meaning you will have to kill the emulator process yourself (see examples in the "/opt/charon/utils/charon_gstart.stop.example" file)
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Script usage

Usage:

# path/script <port> <user> <password> <prompt> <opsys> 


Parameters:

ParameterDescription
<port>telnet port number (example: 10003)
<user>username for login (must be able to perform shutdown)
<password>password
<prompt>shell prompt (including end space) or last characters of the prompt
<opsys>VMS or UNIX

 


Example:

(info) Examples are given in the /opt/charon/utils/charon_gstart.stop.example file 


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