sshadd

Author: Bryan MacFarlane

rc/sshadd.sh

@@ -0,0 +1,31 @@
+#!/bin/bash -e
+
+if [ "$(uname)" = "Linux" ]; then 
+    # https://docs.github.com/en/authentication/connecting-to-github-with-ssh/working-with-ssh-key-passphrases#auto-launching-ssh-agent-on-git-for-windows
+    env=~/.ssh/agent.env
+
+    agent_load_env () { 
+        test -f "$env" && . "$env" >| /dev/null ; 
+    }
+
+    agent_start () {
+        (umask 077; ssh-agent >| "$env")
+        . "$env" >| /dev/null ; 
+    }
+
+    agent_load_env
+
+    # agent_run_state: 0=agent running w/ key; 1=agent w/o key; 2=agent not running
+    agent_run_state=$(ssh-add -l >| /dev/null 2>&1; echo $?)
+
+    if [ ! "$SSH_AUTH_SOCK" ] || [ $agent_run_state = 2 ]; then
+        echo Adding ssh identity
+        agent_start
+        ssh-add ~/.ssh/id_ed25519
+    elif [ "$SSH_AUTH_SOCK" ] && [ $agent_run_state = 1 ]; then
+        echo Adding ssh identity
+        ssh-add ~/.ssh/id_ed25519
+    fi
+
+    unset env
+fi