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December 18, 2023 07:45
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Save hongkongkiwi/fff178c3243ae5aaff8e to your computer and use it in GitHub Desktop.
Simple one liner to generate an SSH key without a password in the default place with the comment as hostname then print out the public key for copy and paste.
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| HOSTNAME=`hostname` ssh-keygen -t rsa -C "$HOSTNAME" -f "$HOME/.ssh/id_rsa" -P "" && cat ~/.ssh/id_rsa.pub |
Your welcome! If your on Mac OSX you can add the command to copy to clipboard as well (pbcopy)
I optimized the command:
echo "y\n" | HOSTNAME=`hostname` ssh-keygen -t rsa -C "$HOSTNAME" -f "$HOME/.ssh/id_rsa" -P ""No need to press anything after running the command.
To optimise further without piping text or using HOSTNAME variable, I suppose this could also be used if you wanted to override existing key
rm -f "$HOME/.ssh/id_rsa"; ssh-keygen -t rsa -C "`hostname`" -f "$HOME/.ssh/id_rsa" -P "" -q
or this if you didnt want to override:
test -f "$HOME/.ssh/id_rsa" || ssh-keygen -t rsa -C "`hostname`" -f "$HOME/.ssh/id_rsa" -P "" -q
P.S. on my version of ssh-keygen I don't get any interactive prompt requiring y or n when I pass -P ""
Why not auto copy in clipboard ?
You need to install xclip either in linux or mac:
linux: sudo apt-get install xclip
mac: brew install xclip
and then append to any of the above commands:
| xclip -selection clipboard
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Nice. Thanks