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Old 01-18-2011, 04:49 PM   #1
nycblkboy
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Unhappy Delete users in bulk


Is there a way to remove users in bulk? Maybe by a range of user id numbers.

I help run a school server for our Linux class. I create temp accounts for tests and now I just want to delete them. I really should delete the old users too but the Professer likes to let them have access even after the class.
 
Old 01-18-2011, 06:29 PM   #2
zer0signal
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Maybe use some type of script to take input from you about who you want to useradd -m "username" into the system while taking that variable that was used for the input and redirecting it to another file >> users.txt That is to be read later when making a script to remove userdel -f < /location/users.txt

obviously ran as either sudo or root.

the quickest idea I can come up with...

Last edited by zer0signal; 01-18-2011 at 06:30 PM.
 
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Old 01-18-2011, 06:45 PM   #3
nycblkboy
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Quote:
Originally Posted by zer0signal View Post
Maybe use some type of script to take input from you about who you want to useradd -m "username" into the system while taking that variable that was used for the input and redirecting it to another file >> users.txt That is to be read later when making a script to remove userdel -f < /location/users.txt

obviously ran as either sudo or root.

the quickest idea I can come up with...
Good idea i'm going to add a few accounts and try it.
Do you know if userdel -f xkcd* would work? Where xkcd* is a list of users whose username begins with xkcd.
 
Old 01-18-2011, 06:54 PM   #4
zer0signal
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I don't think you can use the wildcard like that. =(
But I am not a great scripter, where I would look is into into a loop function for userdel, that would just keep that script running till it reached the end of user.txt.

Last edited by zer0signal; 01-18-2011 at 06:55 PM.
 
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Old 01-18-2011, 07:46 PM   #5
frndrfoe
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You could build the list from /etc/passwd
Code:
awk -F":" '{ print $1 }' /etc/passwd |grep '^xkcd' >users.txt
or from a directory service
Code:
getent passwd | awk -F":" '{ print $1 }' | grep '^xkcd' >users.txt
 
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Old 01-18-2011, 07:58 PM   #6
zer0signal
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nice! I need to play around with awk and sed more! thx for the info frndrfoe!
 
Old 01-18-2011, 08:05 PM   #7
nycblkboy
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Quote:
Originally Posted by frndrfoe View Post
You could build the list from /etc/passwd
Code:
awk -F":" '{ print $1 }' /etc/passwd |grep '^xkcd' >users.txt
or from a directory service
Code:
getent passwd | awk -F":" '{ print $1 }' | grep '^xkcd' >users.txt
Buliding the list not be a problem. I can just take the passwd file import it into excel and erase the info i don't need and save it as text. But thanks I keep forgetting how powerful Unix is.
 
  


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