chezmoi init

dot_oh-my-zsh/plugins/ssh/README.md

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+# ssh plugin
+
+This plugin provides host completion based off of your `~/.ssh/config` file, and adds
+some utility functions to work with SSH keys.
+
+To use it, add `ssh` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... ssh)
+```
+
+## Functions
+
+- `ssh_rmhkey`: remove host key from known hosts based on a host section name from `.ssh/config`.
+- `ssh_load_key`: load SSH key into agent.
+- `ssh_unload_key`: remove SSH key from agent.

dot_oh-my-zsh/plugins/ssh/ssh.plugin.zsh

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+############################################################
+# Take all host sections in .ssh/config and offer them for
+# completion as hosts (e.g. for ssh, rsync, scp and the like)
+# Filter out wildcard host sections.
+_ssh_configfile="$HOME/.ssh/config"
+if [[ -f "$_ssh_configfile" ]]; then
+  _ssh_hosts=($(
+    egrep '^Host.*' "$_ssh_configfile" |\
+    awk '{for (i=2; i<=NF; i++) print $i}' |\
+    sort |\
+    uniq |\
+    grep -v '^*' |\
+    sed -e 's/\.*\*$//'
+  ))
+  zstyle ':completion:*:hosts' hosts $_ssh_hosts
+  unset _ssh_hosts
+fi
+unset _ssh_configfile
+
+############################################################
+# Remove host key from known hosts based on a host section
+# name from .ssh/config
+function ssh_rmhkey {
+  local ssh_configfile="$HOME/.ssh/config"
+  local ssh_host="$1"
+  if [[ -z "$ssh_host" ]]; then return; fi
+  ssh-keygen -R $(grep -A10 "$ssh_host" "$ssh_configfile" | grep -i HostName | head -n 1 | awk '{print $2}')
+}
+compctl -k hosts ssh_rmhkey
+
+############################################################
+# Load SSH key into agent
+function ssh_load_key() {
+  local key="$1"
+  if [[ -z "$key" ]]; then return; fi
+  local keyfile="$HOME/.ssh/$key"
+  local keysig=$(ssh-keygen -l -f "$keyfile")
+  if ( ! ssh-add -l | grep -q "$keysig" ); then
+    ssh-add "$keyfile"
+  fi
+}
+
+############################################################
+# Remove SSH key from agent
+function ssh_unload_key {
+  local key="$1"
+  if [[ -z "$key" ]]; then return; fi
+  local keyfile="$HOME/.ssh/$key"
+  local keysig=$(ssh-keygen -l -f "$keyfile")
+  if ( ssh-add -l | grep -q "$keysig" ); then
+    ssh-add -d "$keyfile"
+  fi
+}