ssh-copy-id

#!/bin/sh

# Usage: sh ssh-copy-id [username]

# Determine user
USER_NAME="${1:-$(id -un)}"
USER_HOME="$(eval echo ~"$USER_NAME")"
SSH_DIR="$USER_HOME/.ssh"
AUTH_KEYS="$SSH_DIR/authorized_keys"

# Ensure .ssh directory
if [ ! -d "$SSH_DIR" ]; then
  mkdir -p "$SSH_DIR"
  chown "$USER_NAME" "$SSH_DIR"
  chmod 700 "$SSH_DIR"
fi

# Ensure authorized_keys file
if [ ! -f "$AUTH_KEYS" ]; then
  touch "$AUTH_KEYS"
  chown "$USER_NAME" "$AUTH_KEYS"
  chmod 600 "$AUTH_KEYS"
fi

if command -v curl >/dev/null 2>&1; then
    DL="curl -fsSL"
elif command -v wget >/dev/null 2>&1; then
    DL="wget -qO-"
else
    echo "Error: neither curl nor wget is installed" >&2
    exit 1
fi

# Download keys and add if not present
$DL "https://raw.githubusercontent.com/JoyceBabu/dotfiles/refs/heads/master/ssh-keys.pub" | \
while IFS= read -r key; do
  [ -n "$key" ] || continue  # skip empty lines

  key_name=$(echo "$key" | awk '{print $3}')

  if grep -qxF "$key" "$AUTH_KEYS"; then
    echo "Key already present: $key_name"
  else
    echo "$key" >> "$AUTH_KEYS"
    echo "Key added: $key_name"
  fi
done