Editing Passwd (command)



:<code>[[passwd]] USERNAME</code>

:<code>[[passwd]] -l $USERNAME</code> // for disabling password login
:<code>passwd -u $USERNAME</code> // will unlock account if needed

<pre>
passwd -u $USERNAME
passwd: password expiry information changed.
</pre>


 [[journalctl]] 
 Feb 05 14:35:55 SERVER_NAME passwd[29180]: [[pam_unix]](passwd:chauthtok): password changed for root

== Related terms ==
* <code>[[PermitRootLogin]]</code> in <code>[[sshd_config]]</code>
* [[Lockout policy]]
* [[PAM]]
* <code>[[/etc/passwd]]</code> (See also [[Zabbix]] <code>/etc/passwd</code> trigger)
* <code>[[jailkit]]</code>
* <code>[[libpam_cracklib]]</code>
* [[Passwordless sudo]]
* [[Lockout policy (Windows)]]
* <code>[[openssl passwd]]</code>
* <code>[[/etc/systemd/logind.conf]]</code>

== Activities ==
* Read https://www.cyberciti.biz/faq/securing-passwords-libpam-cracklib-on-debian-ubuntu-linux/

== See also ==
* [[Hardcoded password]] 
* {{sudo}}
* {{OpenSSH}}
* {{passwd}}


[[Category:Security]]
@@ Line 1: / Line 1: @@
-{{lowercase}}
-<code>passwd</code> command included in [[passwd (package)]]
-* <code>[[passwd]] USERNAME</code>
+:<code>[[passwd]] USERNAME</code>
-* <code>[[passwd -l]] USERNAME</code> // for disabling password login
+:<code>[[passwd]] -l $USERNAME</code> // for disabling password login
-* <code>[[passwd -u]] USERNAME</code> // will unlock account if needed
+:<code>passwd -u $USERNAME</code> // will unlock account if needed
-* <code>[[passwd --status]] USERNAME</code> // show status
- passwd -u $USERNAME
+<pre>
- passwd: password expiry information changed.
+passwd -u $USERNAME
+passwd: password expiry information changed.
+</pre>
- passwd -u USERNAME
- passwd: password for USERNAME changed by root
- passwd -u USERNAME
- passwd: password for USERNAME is already [[unlocked]]
- passwd --status USERNAME
- USERNAME L 11/15/2020 0 99999 7 -1
   [[journalctl]]
@@ Line 25: / Line 16: @@
 == Related terms ==
-* <code>[[PermitRootLogin]]</code> and <code>[[PasswordAuthentication]]</code> in <code>[[/etc/ssh/sshd_config]]</code>
+* <code>[[PermitRootLogin]]</code> in <code>[[sshd_config]]</code>
+* [[Lockout policy]]
 * [[PAM]]
 * <code>[[/etc/passwd]]</code> (See also [[Zabbix]] <code>/etc/passwd</code> trigger)
@@ Line 32: / Line 24: @@
 * [[Passwordless sudo]]
 * [[Lockout policy (Windows)]]
-* [[Password policy]]
 * <code>[[openssl passwd]]</code>
 * <code>[[/etc/systemd/logind.conf]]</code>
-* <code>[[passwd (package)]]</code>
-* [[PostgreSQL]]: <code>[[ALTER USER]] user_name WITH PASSWORD 'new_password';</code>
-* <code>[[ssh-keygen -p]]</code>
-* <code>[[mkpasswd]]</code>
-* [[AWS]]: <code>[[aws iam change-password]]</code>
-* [[macOS]]:
-** <code>[[dscl . -passwd]]</code>
-** <code>passwd yourUsername</code>
-** <code>[[security set-keychain-password]]</code>
-* [[Change password]]
-* <code>[[gpasswd]]</code>
 == Activities ==
 * Read https://www.cyberciti.biz/faq/securing-passwords-libpam-cracklib-on-debian-ubuntu-linux/
-* [[macOS]]: https://support.apple.com/en-us/HT202860
 == See also ==