Some simple ssh helper functions

[dpeg22]

Hi all,

Purpose

Here is a bash script that I wrote to streamline connecting to virgas over ssh and opening ssh tunnels to specific ports (i.e. for jupyter notebooks). Feel free to suggest additions to this or ask if there are other things similar to this that may be useful :-)

Steps to implement

• One would need to copy this into their a location within their home directory on hippo
• Change every instance of username to their own
• Add a line to their bashrc:
  source ~/path/to/ssh_func.sh

Code

con_virga () { ssh -p 7777 username@virga-0"$1"; }
virga_jupyter () { ssh -N -p 7777 username@virga-0"$1" -L "$2":localhost:"$2"; }
gpu_jupyter () { ssh -N username@"$1".cin.ucsf.edu -L "$2":localhost:"$2"; }
con_gpu () { ssh username@"$1".cin.ucsf.edu; }

How to use

Note: the leading 0 is included, so the virga# will be a single digit

to open an ssh connection to a virga:
con_virga <virga#>
once on that virga you can start a jupyter server and then open a tunnel to that server via:
virga_jupyter <virga#> <port#>

A more verbose example:

% con_virga 5
# open your jupyter notebook
$ jupyter lab --no-browser --port 8090
# copy link to jupyter lab

## In a separate terminal
% virga_jupyter 5 8090
# paste link into local browser