unix servers

HowTo: UNIX Set Date and Time Command

by on April 26, 2011 · 4 comments

I recently noticed that one of my UNIX servers was about 4 hours behind the correct time. I wanted to correct the date and time manually. How do I set date and/or time under UNIX operating systems using command line options?

{ 4 comments }

Force SSH Client To Use Given Private Key ( identity file )

by on May 17, 2010 · 3 comments

Recently, my desktop hard disk crashed. So I reinstalled Linux and created a new set of private RSA keys for authentication. However, two of my remote UNIX servers still uses old DSA keys. I do not remember root password for those servers. I do have backup of private and public DSA keys and currently stored in /backup/home/user/.ssh/id_dsa and /backup/home/user/.ssh/id_dsa.pub. How do I force my ssh clients to use identity file /backup/home/user/.ssh/id_dsa to get back to my remote UNIX servers?

{ 3 comments }

Install / Append SSH Key In A Remote Linux / UNIX Servers Authorized_keys

by on May 6, 2010 · 7 comments

How do I install my SSH public key ~/.ssh/id_rsa.pub onto a remote Linux / UNIX server automatically from Linux workstation / Apple OS X laptop without using scp and/or copy & paste method?

{ 7 comments }