I do much of my work from tmux, I love it so much that I want to setup some functionality that puts me in tmux even if I didnt ask for it.
<h2 id="bash-function">Bash Function</h2>
Bash function to check if the shell is in a tmux session.
<pre><code class="lang-bash">in_tmux () {
 if [ -n "$TMUX" ]; then
 return 0
 else
 return 1
 fi
 }
</code></pre>
<h2 id="using-the-bash-function">Using the bash function</h2>
I often open up vim to do some quick edits, but before I know it I have several splits open and I need access to another shell utility, but I forgot to start in tmux. This function makes sure that I start in tmux every time.
Using <code>if_tmux</code> to ensure vim is opened in tmux.
<pre><code class="lang-bash">vim () { 
 in_tmux \
 &amp;&amp; nvim \
 || bash -c "\
 tmux new-session -d;\
 tmux send-keys nvim Space +GFiles C-m;\
 tmux -2 attach-session -d;
 "
 }
</code></pre>
I am not quite sure if this is proper use of the <code>&amp;&amp;</code> and <code>||</code>, let me know if you have a better way to do one thing if <code>in_tmux</code> returns true and another if it returns faslse.

I do much of my work from tmux, I love it so much that I want to setup some functionality that puts me in tmux even if I didnt ask for it.


## Bash Function

Bash function to check if the shell is in a tmux session.

``` bash
in_tmux () {
  if [ -n "$TMUX" ]; then
    return 0
  else
    return 1
  fi
  }
```

## Using the bash function

I often open up vim to do some quick edits, but before I know it I have several splits open and I need access to another shell utility, but I forgot to start in tmux.  This function makes sure that I start in tmux every time.

Using `if_tmux` to ensure vim is opened in tmux.

``` bash
vim () { 
  in_tmux \
    && nvim \
    || bash -c "\
    tmux new-session -d;\
    tmux send-keys nvim Space +GFiles C-m;\
    tmux -2 attach-session -d;
    "
  }
```


I am not quite sure if this is proper use of the `&&` and `||`, let me know if you have a better way to do one thing if `in_tmux` returns true and another if it returns faslse.

If Tmux

Bash Function

Using the bash function