Add session command

session/session.plugin.zsh

@@ -0,0 +1,27 @@
+session() {
+  if [[ "$1" == "" ]]; then
+    echo "usage: session <name> [<host>]"
+  else
+    local name=$1
+    local host=$2
+    if [[ "$3" != "" ]]; then
+      echo "$fg[red]error:$reset_color invalid argument: $3"
+      return 1
+    fi
+    if [[ "$TMUX" == "" ]]; then
+      local cmd="tmux new-session -As $name"
+      if [[ "$host" != "" ]]; then
+        cmd="ssh $host -t $cmd"
+      fi
+      eval $cmd
+    else
+      if [[ "$host" != "" ]]; then
+        echo "$fg[red]error:$reset_color <host> not allowed inside tmux session"
+        return 1
+      fi
+      tmux list-sessions | grep "$name:" &> /dev/null || \
+        tmux new-session -Ads $name -c $HOME
+      tmux switch-client -t $name
+    fi
+  fi
+}