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Full Discussion: On korn shell, how to share history between regular user and root?
Top Forums Shell Programming and Scripting On korn shell, how to share history between regular user and root? Post 303027859 by DevuanFan on Wednesday 26th of December 2018 10:16:10 PM
Old 12-26-2018
That's a good idea, but I wanted something more real-time, so I came up with a hack. If I put this in both ~/.kshrc and /root/.kshrc, I get what I want:



Code:
prompt_commands()
{
    if [ $(id -u) = "0" ]; then
        tail -1 /root/.ksh_history >>/home/bruno/.ksh_history
    else
        tail -1 /home/bruno/.ksh_history >>/root/.ksh_history
    fi
}

PS1='$(prompt_commands)'

Unlike bash, ksh does not have the handy PROMPT_COMMAND. However, the PS1 variable does support command substitution, which my hack exploits. As long as both user's and root's history files have write permission for "others", now whenever root runs a command that command gets appended to my regular user's history, and vice-versa.
Last edited by DevuanFan; 12-27-2018 at 02:21 PM..
This User Gave Thanks to DevuanFan For This Post:
Neo
 

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LEARN ABOUT CENTOS

k5login

K5LOGIN(5)							   MIT Kerberos 							K5LOGIN(5)

NAME

       k5login - Kerberos V5 acl file for host access

DESCRIPTION

       The  .k5login  file, which resides in a user's home directory, contains a list of the Kerberos principals.  Anyone with valid tickets for a
       principal in the file is allowed host access with the UID of the user in whose home directory the file resides.	One common use is to place
       a .k5login file in root's home directory, thereby granting system administrators remote root access to the host via Kerberos.

EXAMPLES

       Suppose the user alice had a .k5login file in her home directory containing the following line:

	      bob@FOOBAR.ORG

       This would allow bob to use Kerberos network applications, such as ssh(1), to access alice's account, using bob's Kerberos tickets.

       Let  us	further  suppose  that	alice is a system administrator.  Alice and the other system administrators would have their principals in
       root's .k5login file on each host:

	      alice@BLEEP.COM

	      joeadmin/root@BLEEP.COM

       This would allow either system administrator to log in to these hosts using their Kerberos tickets instead of having to type the root pass-
       word.   Note  that  because bob retains the Kerberos tickets for his own principal, bob@FOOBAR.ORG, he would not have any of the privileges
       that require alice's tickets, such as root access to any of the site's hosts, or the ability to change alice's password.

SEE ALSO

       kerberos(1)

AUTHOR

       MIT

COPYRIGHT

       1985-2013, MIT

1.11.3																	K5LOGIN(5)
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