Linux: Delete user password

by on February 16, 2006 · 11 comments· LAST UPDATED September 6, 2007

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Q. How do I delete user Password under Linux? I'd like to disable a password for an account.

A. All user encrypted passwords are stored in /etc/shadow file. The quick way to remove/delete a user password is pass --delete option to passwd command. First, login in as a root user.

Command to delete user password under Linux

Type the following command to delete a user password:
# passwd --delete username
OR
# passwd -d username
Above command delete a user's password (make it empty). This is a quick way to disable a password for an account. It will set the named account passwordless. User will not able to login. It is also a good idea to setup user shell to nologin to avoid security related problems:# usrmod -s /sbin/nologin usernameFor example to delete password for user sweta, Type:# passwd -d sweta
# usrmod -s /sbin/nologin sweta

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{ 11 comments… read them below or add one }

1 hemant May 28, 2007 at 7:19 am

I have a Doubt,I want ssh and sftp to remote machine without asking password.

I did lots of thing according to the net help but it is still asking password.

I did on server as follows

1) ssh-keygen -t dsa; ssh-keygen -t rsa
2) copied it on remote host in my home dir. /.ssh/authorized_key
but it is asking password
3) on server i gave command ssh-agent $SHELL and ssh-add
some simple mistake is there but i am not able to find out could anybody help me out.

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2 Herberth Amaral December 28, 2010 at 10:37 am

The filename is “authorized_keys”, in plural :-)

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3 hemant May 28, 2007 at 7:21 am

if 3/4 client machines are connected to a solaris server,what would be the command to know that each and every client machine using the memory and other resources of the server and upto what %

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4 nixCraft May 28, 2007 at 2:43 pm

hemant,

You are posting questions to wrong topic, anyway join our forum and post your question in appropriate thread.

For ssh see this FAQ

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5 miranda starling December 15, 2007 at 11:42 pm

i need help on deleting my myspace account i lost my password on there.. and i need it deleted so i can put a new one up there,

i would appreciate any tips thankz
miranda s

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6 sunilkumar May 21, 2009 at 10:35 am

plese send shortcut command in my email id .

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7 Nik January 2, 2010 at 3:18 pm

nice one, though I did not require the nologin part, now I can log in without password.

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8 Randy July 11, 2010 at 4:12 pm

UHm. I tried this but this it says permission denied .. and this is the only account on this ubuntu. So I’m lost :S

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9 antoni September 30, 2010 at 2:26 pm

this si how my line looks like:
sudo passwd -d username

it worked, but my friend forgot to type sudo, (read everything before starting :P)

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10 felix May 28, 2011 at 6:24 pm

i forgot password on linux cp, DELL is there any way to get in my account without password

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11 masum August 13, 2011 at 9:04 am

i am a user of linux.but i forget my linux password please help me to delete passwogr

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