Bash function to help manage multiple github identities in your ssh config

gistfile1.txt

#~/.ssh/config
_____________________________________________________________________________
# Instructions:
# ---------------------------------------------
# the way this works is that you have to use the Host value with the ssh call
# Host="github.com-paulegradie"
# git clone git@${Host}:paulegradie/SeqPyPlot.git

# The default here is github.com - this is what comes with the copy/paste from github when you click
# the clone or download button.
# ----------------------------------------------

Host *
  IdentitiesOnly yes
  AddKeysToAgent yes
  TCPKeepAlive yes

Host github.com-paulegradie
	HostName github.com
	User git
	IdentityFile ~/.ssh/paulegradie_id_rsa

Host github.com-gradieml
	HostName github.com
	User git
	IdentityFile ~/.ssh/gradieml_id_rsa
_____________________________________________________________________________

#~/.functions

clone () {

    # set these to match the Host in the config
    gml="gihub.com-gradieml"
    peg="github.com-paulegradie"

    originalstring=${1}  # grabs the first command line arg
    itemtoreplace="github.com"  # This is what we are replacing with the vars above

    if [[ ${2} == "octo" ]];
    then
        echo "Cloning from Octopus Deploy"
        newhost=${originalstring/$itemtoreplace/$peg}  # find/replace 
        git clone ${newhost}  # call git clone on the repo

    elif [[ ${2} == "peg" ]];
    then
        echo "Cloning from paulegradie"
        newhost=${originalstring/$itemtoreplace/$peg}
        git clone ${newhost}

    elif [[ ${2} == "gml" ]];
    then
        echo "Cloning from gradieml"
        newhost=${originalstring/$itemtoreplace/$gml}
        git clone ${newhost}
    else
        echo "Usage: clone {repo-link} suffix"
        echo "Suffix one of [octo, peg, or gml"
        echo ""
        echo "e.g. clone git@github.com:paulegradie/SeqPyPlot.git peg"
    fi
}