Re: aix shell script

dfrench_at_mtxia.com
Date: 12/11/04

  • Next message: peter_at_peternolan.com: "Error Message 1540-0274 for defining semaphors" 
    Date: 10 Dec 2004 15:35:59 -0800

    roger1991@hotmail.com wrote:
    > I need a shell script to stop duplicate concurrent logins. I need a
    > second script to timeout a logged in inactive user after a
    > predetermined time limit.
    > Thanks for your help.

    Procedure to limit logins to 1 login per user:

    1. Create the following script:

    /usr/bin/Block_user

    ---- Cut Here ----
    #!/bin/ksh
    USER="${1}"
    NUM=$( who | grep ${USER} | cut -c1-8 | wc -l )

    (( NUM < 1 )) && exit 0

    print "Permission Denied ... ${NUM} is the limit of logins"
    exit 1
    ---- Cut Here ----

    chmod 555 /usr/bin/Block_user

    2. Edit "/etc/security/login.cfg" and change the following lines:

    * auth_method:
    * program =

    to

    auth_method:
    program = /usr/bin/Block_user

    3. Edit "/etc/security/user" and change the auth1 line to:

    default:
    auth1 = SYSTEM,auth_method

    4. "root" should be set as an exception to this rule:

    root:
    auth1 = SYSTEM

    5. Existing user stanzas that should be limited, should be changed
    to:

     auth1 = SYSTEM,auth_method 

    -- 
Dana French
  • Next message: peter_at_peternolan.com: "Error Message 1540-0274 for defining semaphors"

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