Monday, April 20, 2015

Converting ssh-keygen created key into PEM format (using OpenSSL)

Say I have created RSA key and it's located in my $HOME:

Create private key:

najmi@quds:~/.ssh$ openssl rsa -in id_rsa -outform pem > rsa_priv.pem


Create public key based on the private key above:

najmi@quds:~/.ssh$ openssl rsa -in rsa_priv.pem -pubout -out rsa_pub.pem 


Sunday, April 19, 2015

IRC client for Linux

I recently have a need to use the IRC to communicate with my counterparts. I have be looking to either GUI based or CLI based.. and each of them have their own strengths and weaknesses.

The following were the IRC clients which I managed to test out:

CLI based:

  • Weechat
  • IRSSI
  • f-IRC (seems does not support SSL)


GUI based:

  • Quassel
  • Smuxi
  • Pidgin-IRC
  • Konversation (KDE based)
  • X-chat

I later learnt a way on how to have a daemon listen log to your IRC channel without you switching own your IRC client, hence I tried ZNC.

I managed to get ZNC worked on my machine (hence the connection will be localhost:). 
However I did not able to connect to remote ZNC for unknown reason. The reason for me to use ZNC is that I want to get my machine into suspend mode while I don't want to miss any important conversation in the channel, so I believe remote ZNC (say, on my private VPS) should work.

Opinions are welcomed.