Some fish shell configuration changes

terminal/fish/functions/fish_prompt.fish

@@ -6,7 +6,7 @@ function fish_prompt
   end
 
   # Hostname with unique color
-  set_color (hostname -s | md5 | cut -c-6)
+  set_color (hostname -s | md5sum | cut -c-6)
   echo -sn (hostname -s)
 
   # A yellow separator

terminal/fish/functions/is_ssh_agent_running.fish

@@ -0,0 +1,12 @@
+function is_ssh_agent_running
+  if begin; test -f ~/.ssh/env; and test -z "$SSH_AGENT_PID"; end
+    source ~/.ssh/env > /dev/null
+  end
+
+  if test -z "$SSH_AGENT_PID"
+    return 1
+  end
+
+  ps -ef | grep $SSH_AGENT_PID | grep -v grep | grep -q ssh-agent
+  return $status
+end

terminal/fish/functions/ssh_agent_start.fish

@@ -0,0 +1,5 @@
+function ssh_agent_start
+  ssh-agent -c | sed 's/^echo/#echo/' > ~/.ssh/env
+  chmod 600 ~/.ssh/env
+  source ~/.ssh/env > /dev/null
+end