Remove a user from a secondary group
I know how to add a user to a second group, for example to give su authority (using wheel)to a user, we issue the following command: usermod -G wheel testur4 But how can I remove him in a single command without directly editing the /etc/group /etc/gshadow files (vigr). Is there a single command? James Chaplin Systems Programmer, MVS, zVM zLinux Base Technologies, Inc Supporting the zSeries Platform Team -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Remove a user from a secondary group
-Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of CHAPLIN, JAMES (CTR) Sent: Tuesday, October 06, 2009 11:06 AM To: LINUX-390@VM.MARIST.EDU Subject: Remove a user from a secondary group I know how to add a user to a second group, for example to give su authority (using wheel)to a user, we issue the following command: usermod -G wheel testur4 But how can I remove him in a single command without directly editing the /etc/group /etc/gshadow files (vigr). Is there a single command? James Chaplin Assuming that I haven't gone totally insane. usermod -a -G newgroup existinguser #add newgroup usermod -G oldgroup existinguser #remove oldgroup -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Remove a user from a secondary group
On 10/6/2009 at 12:06 PM, CHAPLIN, JAMES (CTR) james.chap...@associates.dhs.gov wrote: I know how to add a user to a second group, for example to give su authority (using wheel)to a user, we issue the following command: usermod -G wheel testur4 But how can I remove him in a single command without directly editing the /etc/group /etc/gshadow files (vigr). Is there a single command? When you use usermod -G group1,group2,group3 username, any groups that username is a member of, but are not listed on the command, are removed. I.e., each usermod -G command must specify _all_ the groups you want them to be in. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Remove a user from a secondary group
Thanks Mark, . . . that's the answer, and I did not know this. James Chaplin Systems Programmer, MVS, zVM zLinux Base Technologies, Inc -Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Mark Post Sent: Tuesday, October 06, 2009 2:33 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Remove a user from a secondary group On 10/6/2009 at 12:06 PM, CHAPLIN, JAMES (CTR) james.chap...@associates.dhs.gov wrote: I know how to add a user to a second group, for example to give su authority (using wheel)to a user, we issue the following command: usermod -G wheel testur4 But how can I remove him in a single command without directly editing the /etc/group /etc/gshadow files (vigr). Is there a single command? When you use usermod -G group1,group2,group3 username, any groups that username is a member of, but are not listed on the command, are removed. I.e., each usermod -G command must specify _all_ the groups you want them to be in. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
