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Status Not under consideration
Workspace AIX
Created by Guest
Created on Jul 7, 2016

Have 'chpasswd' Recognize an LPM

After changing the root password on one lpar, we use the 'chpasswd' command to propagate it to the other 100+ lpars in our environment. This works when using the crypt algorithm, but not when using the 'sha512' algorithm

Idea priority Medium
  • Guest
    Reply
    |
    Nov 3, 2016

    Hi this is working as design.
    More detailed info.

    - Customer was looking at how to copy encrypted passwd from one system to other system So that they do not have to manually change it in 100+lpar.
    - customer used chpasswd -e command to do so. However it does not work
    - On further analysis, it was found that when passwd is changed, algorithm information is also associated with encrypted passwd. So LPA is not an issue as mentioned in the RFE

    - customer was using the following command

    #echo "amit:{ssha512}06$yZQb.T04eYO1JeC6$rN3jWQW1hK.4FNdDUwIEAT5QpcbsIa57pShsvvFcTuCuJp19Zuucp/zOiNLRS.KYrzlOmbEZ9dyyZxNoIgu/.." |chpasswd -e

    Though above command succeeds but passwd encrypted string will get corrupted in the /etc/security/passwd file. Since "$" in the encrypted passwd string is interpreted as shell metacharater by the shell [ Expand the value of a variable ],

    Use one of the following way to make it work

    1. put "\" before the "$" in the above command then shell will not interpret it.

    #echo "amit:{ssha512}06\$yZQb.T04eYO1JeC6\$rN3jWQW1hK.4FNdDUwIEAT5QpcbsIa57pShsvvFcTuCuJp19Zuucp/zOiNLRS.KYrzlOmbEZ9dyyZxNoIgu/.." |chpasswd -e

    2. copy user and passwd in a file (say pass.txt) then run the following command, it will work

    #cat pass.txt |chpasswd -e

  • Guest
    Reply
    |
    Jul 8, 2016

    Creating a new RFE based on Community RFE #91182 in product IBM AIX.