change-ssh-identityfile

# Before: 👇🏻
# Host github.com
# HostName github.com
# User git
# IdentityFile /Users/admin/.ssh/other-file
change-ssh-identityfile --host github.com --config ~/.ssh/config --identity ~/.ssh/my-private-identity-file
# After: 👇🏻
# Host github.com
# HostName github.com
# User git
# IdentityFile /Users/admin/.ssh/my-private-identity-file

Test

from source

node change-ssh-identityfile.js --host github.com --config ~/.ssh/config --identity ~/.ssh/my-private-identity-file

from binary

# prereq: yarn build
./dist/change-ssh-identityfile-x64 --host github.com --config ~/.ssh/config --identity ~/.ssh/my-private-identity-file
./dist/change-ssh-identityfile-x86 --host github.com --config ~/.ssh/config --identity ~/.ssh/my-private-identity-file