.mrt memo

Putty is a nice cross-platform toolset with terminal emulator and keypair generation tool (puttygen) among others, but when you want to take your keypair with you to a normal Linux environment (meaning OpenSSH and the ~/.ssh directory), then you cant just copy-paste the keys under the .ssh directory. There are some formatting issues and after some research I found out that fortunately you can convert a Puttygen generated keypair into normal OpenSSH format. So here’s a memo of these commands (-O means what to export and -o gives the name of an output file):

puttygen putty_generated_private_key_file.ppk -O private-openssh -o id_rsa

puttygen putty_generated_private_key_file.ppk -O public-openssh -o id_rsa.pub

After that you just copy-paste the id_rsa and id_rsa.pub files under your ~/.ssh directory.

Further reading:
puttygen man page

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 7.10
Release:        7.10
Codename:       gutsy

As you can see, it also mentions that annoying codename that I keep forgetting. Now I’ll hope I’ll remember that command.

Here’s a piece of useful information to all who have to use Unix/Linux CLI once in a while.

Via How-To-Geek.