Frequently Asked Questions About Linux / UNIX » passwords http://www.cyberciti.biz/faq Every answer asks a more beautiful question. Fri, 03 Feb 2012 22:38:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Linux Change Passwordhttp://www.cyberciti.biz/faq/linux-change-password/ http://www.cyberciti.biz/faq/linux-change-password/#comments Mon, 06 Dec 2010 22:45:44 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9551 How do I change my own password as well as the passwords of other users as required under Linux operating system without using GUI systems?]]> http://www.cyberciti.biz/faq/linux-change-password/feed/ 2 libglade-WARNING **: could not find signal handler ‘gpass_authentication_on_response’ Error and solutionhttp://www.cyberciti.biz/faq/linux-libglade-warning-could-not-find-signal-handler-authenticationonresponse/ http://www.cyberciti.biz/faq/linux-libglade-warning-could-not-find-signal-handler-authenticationonresponse/#comments Sun, 24 Jan 2010 21:32:28 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10947 I've compiled and install an application called gpass on CentOS v5.6. But, when I run the application it does not accept any password from $HOME/.gpass and displays the following error on screen:
libglade-WARNING **: could not find signal handler 'gpass_authentication_on_response'
How do I fix this problem and use the gpass software?]]> http://www.cyberciti.biz/faq/linux-libglade-warning-could-not-find-signal-handler-authenticationonresponse/feed/ 0 HowTo: Linux Remove a PDF File Password Using Command Line Optionshttp://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/ http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/#comments Wed, 13 Jan 2010 07:25:49 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6294 I get lots of e-bills (utility, telephone, Internet, mobile, cable and so on) in a PDF format for my small business and I need to forward those to my accountant. However, all PDFs files are password protected. I don't want to share my account password with anyone to just open my bills. Evince is a PDF document viewer capable of displaying password protected files but it cannot remove the password. How do I remove a password from all PDFs under Ubuntu or any other Linux distribution in a batch mode? ]]> http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/feed/ 17 Redhat Linux: Change User Passwordhttp://www.cyberciti.biz/faq/change-user-password-red-hat/ http://www.cyberciti.biz/faq/change-user-password-red-hat/#comments Tue, 17 Nov 2009 19:15:25 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9373 How do I change password under Redhat Enterprise Linux?]]> http://www.cyberciti.biz/faq/change-user-password-red-hat/feed/ 0 Linux Upgrade Password Hashing Algorithm to SHA-512http://www.cyberciti.biz/faq/rhel-centos-fedora-linux-upgrading-password-hashing/ http://www.cyberciti.biz/faq/rhel-centos-fedora-linux-upgrading-password-hashing/#comments Tue, 10 Nov 2009 02:11:36 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=5736 The default algorithm for storing password hashes in /etc/shadow is MD5. I was told to use SHA-512 hashing algorithm. How do I set password hashing using the SHA-256 and SHA-512 under CentOS or Redhat Enterprise Linux 5.4?]]> http://www.cyberciti.biz/faq/rhel-centos-fedora-linux-upgrading-password-hashing/feed/ 10 Linux: Force Users To Change Their Passwords Upon First Loginhttp://www.cyberciti.biz/faq/rhel-debian-force-users-to-change-passwords/ http://www.cyberciti.biz/faq/rhel-debian-force-users-to-change-passwords/#comments Thu, 11 Sep 2008 06:18:57 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=1721 Q. How can I force my Linux users to change their passwords upon the first login under CentOS / Debian Linux?]]> http://www.cyberciti.biz/faq/rhel-debian-force-users-to-change-passwords/feed/ 5 Solaris UNIX: Change Default Shellhttp://www.cyberciti.biz/faq/solaris-unix-change-default-shell/ http://www.cyberciti.biz/faq/solaris-unix-change-default-shell/#comments Sun, 17 Feb 2008 20:07:02 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=3331 http://www.cyberciti.biz/faq/solaris-unix-change-default-shell/feed/ 1 Linux Password Cracking: Explain unshadow and john commands ( john the ripper tool )http://www.cyberciti.biz/faq/unix-linux-password-cracking-john-the-ripper/ http://www.cyberciti.biz/faq/unix-linux-password-cracking-john-the-ripper/#comments Fri, 11 Jan 2008 17:21:53 +0000 Vivek Gite http://www.cyberciti.biz/faq/unix-linux-password-cracking-john-the-ripper/ http://www.cyberciti.biz/faq/unix-linux-password-cracking-john-the-ripper/feed/ 26 Linux / UNIX generate htpasswd to store username and password with htpasswd commandhttp://www.cyberciti.biz/faq/create-update-user-authentication-files/ http://www.cyberciti.biz/faq/create-update-user-authentication-files/#comments Wed, 15 Aug 2007 19:23:27 +0000 Vivek Gite http://www.cyberciti.biz/faq/create-update-user-authentication-files/ http://www.cyberciti.biz/faq/create-update-user-authentication-files/feed/ 4 Linux Set or Change User Passwordhttp://www.cyberciti.biz/faq/linux-set-change-password-how-to/ http://www.cyberciti.biz/faq/linux-set-change-password-how-to/#comments Thu, 21 Sep 2006 13:13:40 +0000 Vivek Gite http://www.cyberciti.biz/faq/linux-set-change-password-how-to/ How do I set or change Linux system password for any user account?]]> http://www.cyberciti.biz/faq/linux-set-change-password-how-to/feed/ 35 How do I Telnet as the Root User?http://www.cyberciti.biz/faq/how-do-i-telnet-as-the-root-user/ http://www.cyberciti.biz/faq/how-do-i-telnet-as-the-root-user/#comments Fri, 24 Mar 2006 11:41:00 +0000 nixcraft http://www.cyberciti.biz/faq/faq/how-do-i-telnet-as-the-root-user.php http://www.cyberciti.biz/faq/how-do-i-telnet-as-the-root-user/feed/ 7 What is The Role Of the System Administrator?http://www.cyberciti.biz/faq/what-is-the-role-of-the-system-administrator/ http://www.cyberciti.biz/faq/what-is-the-role-of-the-system-administrator/#comments Mon, 20 Feb 2006 20:09:00 +0000 Vivek Gite http://www.cyberciti.biz/faq/faq/what-is-the-role-of-the-system-administrator.php http://www.cyberciti.biz/faq/what-is-the-role-of-the-system-administrator/feed/ 333 Howto: Use tar Command Through Network Over SSH Sessionhttp://www.cyberciti.biz/faq/howto-use-tar-command-through-network-over-ssh-session/ http://www.cyberciti.biz/faq/howto-use-tar-command-through-network-over-ssh-session/#comments Thu, 16 Feb 2006 14:52:00 +0000 Vivek Gite http://www.cyberciti.biz/faq/faq/howto-use-tar-command-through-network-over-ssh-session.php How do I use tar command over secure ssh session?]]> http://www.cyberciti.biz/faq/howto-use-tar-command-through-network-over-ssh-session/feed/ 33