ethyde · December 3, 2015 11:06 · Dec 3, 2015
diff --git a/.bash_profile b/.bash_profile
@@ -0,0 +1,56 @@
+# SSH Agent
+# Note: ~/.ssh/environment should not be used, as it
+#       already has a different purpose in SSH.
+# source : https://www.schoonology.com/technology/ssh-agent-windows/
+
+env=~/.ssh/agent.env
+
+# Note: Don't bother checking SSH_AGENT_PID. It's not used
+#       by SSH itself, and it might even be incorrect
+#       (for example, when using agent-forwarding over SSH).
+
+agent_is_running() {
+  if [ "$SSH_AUTH_SOCK" ]; then
+    # ssh-add returns:
+    #   0 = agent running, has keys
+    #   1 = agent running, no keys
+    #   2 = agent not running
+    ssh-add -l >/dev/null 2>&1 || [ $? -eq 1 ]
+  else
+    false
+  fi
+}
+
+agent_has_keys() {
+  ssh-add -l >/dev/null 2>&1
+}
+
+agent_load_env() {
+  . "$env" >/dev/null
+}
+
+agent_start() {
+  (umask 077; ssh-agent >"$env")
+  . "$env" >/dev/null
+}
+
+add_all_keys() {
+  ls ~/.ssh | grep ^id_rsa.*$ | sed "s:^:`echo ~`/.ssh/:" | xargs -n 1 ssh-add
+}
+
+if ! agent_is_running; then
+  agent_load_env
+fi
+
+# if your keys are not stored in ~/.ssh/id_rsa.pub or ~/.ssh/id_dsa.pub, you'll need
+# to paste the proper path after ssh-add
+if ! agent_is_running; then
+  agent_start
+  add_all_keys
+elif ! agent_has_keys; then
+  add_all_keys
+fi
+
+echo `ssh-add -l | wc -l` SSH keys registered.
+
+unset env