No feedback from me - corporate firewall blocks pastebin.com ! From: peterboro-boun...@mailman.lug.org.uk [mailto:peterboro-boun...@mailman.lug.org.uk] On Behalf Of Richard Forth Sent: 03 May 2012 14:43 To: Peterborough LUG - No commercial posts Subject: [Peterboro] BASH CODING: Bulk User and Group Adder
Hi Peeps, I wanted to share with you a working BASH script that basically takes a textfile that looks kinda like this: sales:mark,sally,dave,sue,steve marketing:jason,philip,eric,steve ... and processes each line - lets take the first line as example: Checks to see if sales exists already in /etc/group If not creates it. then checks to see if each user exists, if they do it checks to see if they are already in the group, if not it adds it to the group if the user doesnt exist it creates the user and assigns a random 8 character password, then adds it to the group. If you want one particular user to be in more than one group thats ok just add it to whatever line for that group (see steve in the example). Its only 49 lines of code, including documentation notes. Probably totally impractical in real life but it was an exercise in bash coding, with this aim in mind. If anyone wants a copy, I've created a public pastebin: http://pastebin.com/uPxsZcGr the textfile was originally called bugalist 8 for line in `cat bugalist` You can probably modify line 8 to be $1 or set up some code to check for arguments etc, which I now realise I missed out, and didnt document either (damn). Anyway just in case you wonder what "bugalist" was: ~/Dev_Area/bash $ cat bugalist u5:john,tessa,richard,steve u6:dorris,erran,jason,steve ~/Dev_Area/bash $ Sample output: ~/Dev_Area/bash $ sudo ./buga =========== Processing Line: u5:john,tessa,richard,steve =========== Creating group 'u5' ... Members: john,tessa,richard,steve Creating user 'john' ... Password for user 'john' set to: vM6oElDG Adding user 'john' to group 'u5' ... uid=1002(john) gid=1003(john) groups=1003(john),1002(u5) Creating user 'tessa' ... Password for user 'tessa' set to: t9jt2uRR Adding user 'tessa' to group 'u5' ... uid=1003(tessa) gid=1004(tessa) groups=1004(tessa),1002(u5) Creating user 'richard' ... Password for user 'richard' set to: vZddQN4g Adding user 'richard' to group 'u5' ... uid=1004(richard) gid=1005(richard) groups=1005(richard),1002(u5) Creating user 'steve' ... Password for user 'steve' set to: RG8fdZjG Adding user 'steve' to group 'u5' ... uid=1005(steve) gid=1006(steve) groups=1006(steve),1002(u5) =========== Processing Line: u6:dorris,erran,jason,steve =========== Creating group 'u6' ... Members: dorris,erran,jason,steve Creating user 'dorris' ... Password for user 'dorris' set to: qDTgCcxn Adding user 'dorris' to group 'u6' ... uid=1006(dorris) gid=1008(dorris) groups=1008(dorris),1007(u6) Creating user 'erran' ... Password for user 'erran' set to: JOL47SrN Adding user 'erran' to group 'u6' ... uid=1007(erran) gid=1009(erran) groups=1009(erran),1007(u6) Creating user 'jason' ... Password for user 'jason' set to: 3UG416G6 Adding user 'jason' to group 'u6' ... uid=1008(jason) gid=1010(jason) groups=1010(jason),1007(u6) User 'steve' already exists. Adding user 'steve' to group 'u6' ... uid=1005(steve) gid=1006(steve) groups=1006(steve),1002(u5),1007(u6) Enjoy! Feedback welcome. Enjoy! Rich ________________________________ CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium.
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