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Full Discussion: Script for deleting orphan ids & unknown gecos
Homework and Emergencies Emergency UNIX and Linux Support Script for deleting orphan ids & unknown gecos Post 302728841 by otheus on Thursday 8th of November 2012 02:01:18 PM
Old 11-08-2012
Power
You probably want to do something like this:

First, add a soft link from /bin/false to /usr/bin/nologin

Next, have a list of user-names in a text file, one name per line. Then prepare the following script:
Code:
!/bin/sh
cat your-text-file-of-usernames |
while read uname ; do
   if chsh "$uname" /usr/bin/nologin ; then
     echo Logins blocked to "$uname" 
   else
     echo An error occurred attempting to block login to "$uname"
   fi
done

Now, it's possible that you will have to add the nologin pseudo-shell to the list of shells that are valid. If it fails for every user, then you'll need to figure out how to add it to the list. The AIX manual says:
Quote:
Valid shells are defined in the usw stanza of the /etc/security/login.cfg file.
You can also instead do this, a very AIX-specific method:
Code:
cat your-text-file-of-usernames |
while read uname ; do
   if chuser account_locked=true "$uname" ; then
     echo Account locked for "$uname" 
   else
     echo An error occurred attempting to lock login to "$uname"
   fi
done

Note, I have not tested this as I don't have access to an AIX host.
 

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LEARN ABOUT OSF1

uname

uname(2)							System Calls Manual							  uname(2)

NAME

       uname - Gets the name of the current system

SYNOPSIS

       #include <sys/utsname.h>

       int uname(
	       struct utsname *name);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       uname(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Points to a utsname structure.

DESCRIPTION

       The uname() function stores information identifying the current system in the structure pointed to by the name parameter.

       The  uname()  function uses the utsname structure, which is defined in the sys/utsname.h file and contains the following members: char sys-
       name[_SYS_NMLN]; char nodename[_SYS_NMLN]; char release[_SYS_NMLN]; char version[_SYS_NMLN]; char machine[_SYS_NMLN];

       The uname() function returns a null-terminated character string naming the current system in the  sysname  character  array.  The  nodename
       array  contains	the name that the system is known by on a communications network. The release and version arrays further identify the sys-
       tem. The machine array identifies the CPU hardware being used.

RETURN VALUES

       Upon successful completion, a nonnegative value is returned.  Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

       If the uname() function fails, errno may be set to the following value: [Tru64 UNIX]  The name parameter  points  outside  of  the  process
       address space.

RELATED INFORMATION

       Commands: uname(1)

       Standards: standards(5) delim off

																	  uname(2)
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