I have two Github accounts (work + personal), both with their own SSH keys (key_work & key_personal) Projects live in: ~/git/work ~/git/personal I’m trying to set the GIT_SSH_COMMAND up as an environment var such that it looks at the directory the git command is called from, and picks the appropriate ssh key. So far I’ve… Read More Using GIT_SSH_COMMAND to switch SSH key based on current working directory

As an alternative to the very famous ngrok I used to use efrecon/localtunnel docker image to expose my http server on the internet for testing purposes. With linux I used to: start my local HTTP server (let’s say on port 8080) start a container running the efrecon/localtunnel image with –network host: docker run -it -d… Read More is it feasible to run a dockerized locatunnel on Mac?

I’m connecting to a server via ssh using VSCode. The server has Ubuntu 18.04, and until yesterday night, it was working fine, however since this morning, I get the following error (checking the logs in ~/.vscode-server): Warning: Missing GLIBC >= 2.28! from /lib/x86_64-linux-gnu/libc-2.27.so Error: Missing required dependencies. Please refer to our FAQ https://aka.ms/vscode-remote/faq/old-linux for additional… Read More VSCode server unexpected "Missing GLIBC >= 2.28"

I need to connect to a remote linux machine via ssh, take the system information and write it to a file on the remote linux machine. I’ve tried something like this: ssh username@remoteip "cat /etc/os-release; hostname" > result.txt It really takes information about the remote system, but writes it to a local file. How can… Read More Writing to a file on a remote linux machine

How do I create a CloudFormation stack that automatically stands-up an EC2 linux instance but the login to be made via a password and without any keys. I found a tutorial to enable password authentication but It requires changing the data in sshd_config and restarting the instance and I’m not sure how to replicate that… Read More Standup an EC2 instance without keys using the CloudFormation

I have my SSH client config defined as follows: AddKeysToAgent yes ForwardAgent yes AddressFamily inet IdentityFile ~/.ssh/yubikey-01-res IdentityFile ~/.ssh/yubikey-05-res IdentityFile ~/.ssh/id_ed25519 Host github.com IdentityFile ~/.ssh/id_ed25519 IdentitiesOnly yes I need default connections to traverse the yubikeys first and if unavailable- use the ed25519 key. For github.com I need to specifically use the ed25519 key, but it… Read More SSH specify key while ignoring the default keys

Can anyone explain, please, why this command echoes an empty line instead of "abc"? I’m stuck with this. I know there are multiple ways of reaching the same goal but please also explain why this command does not print "abc" and why it’s wrong. ssh 127.0.0.1 bash -c "echo abc" >Solution : You effectively lose… Read More ssh bash with whitespace?

I sshed to my bastion host which has public IP. Now I try to set up an SSH tunnel by using the bastion host and executing the command ssh -L 4000:10.0.0.182 ec2-user@54.236.29.63 I got Bad local forwarding specification ‘4000:10.0.0.182’ What does that mean and how can I fix it? >Solution : You are passing a… Read More Why I can't set up an SSH tunnel? Bad local forwarding specification

How to change password on ssh key. I can’t figure it out, please help! I can’t find anything similar to my problem on Google.I don’t know much about Linux. >Solution : sudo ssh-keygen -f ~/.ssh/YOU_PRIVATE_SSH_KEY -p If the terminal displays the message Permissions 0644 then run the command as root If the terminal displays the… Read More How to change password on ssh key

Trying to clone with full SSH URL, e.g., git clone ssh://bitbucket.org/myaccount/myrepo.git fails with permission denied (publickey), but using shorthand SSH URL, e.g., git clone git@bitbucket.org/myaccount/myrepo.git works just fine. Furthermore, even doing something like the following fails: ssh-agent bash -c ‘ssh-add ~/.ssh/id_mykey_ed25519; git clone ssh://bitbucket.org/myaccount/myrepo.git’ EDIT: I already have an entry of the following form in… Read More Git clone with shorthand SSH URL