Add Change Base Directory Without Detaching as a tmux TIL

Author: jbranchaud

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1295 TILs and counting..._
+_1296 TILs and counting..._
 
 ---
 
@@ -1161,6 +1161,7 @@ _1295 TILs and counting..._
 - [Adjusting Window Pane Size](tmux/adjusting-window-pane-size.md)
 - [Break Current Pane Out To Separate Window](tmux/break-current-pane-out-to-separate-window.md)
 - [Change Base Directory Of Existing Session](tmux/change-base-directory-of-existing-session.md)
+- [Change Base Directory Without Detaching](tmux/change-base-directory-without-detaching.md)
 - [Change The Default Prefix Key](tmux/change-the-default-prefix-key.md)
 - [Create A Named tmux Session](tmux/create-a-named-tmux-session.md)
 - [Create A New Session In A New Server](tmux/create-a-new-session-in-a-new-server.md)

tmux/change-base-directory-without-detaching.md

@@ -0,0 +1,25 @@
+# Change Base Directory Without Detaching
+
+In [Change Base Directory Of Existing
+Session](change-base-directory-of-existing-session.md), I described how you can
+detach from an existing tmux session and re-attach with a new base directory
+specified.
+
+We can do nearly the same thing within the current tmux session without first
+detaching. The command is going to look much the same, but we will execute it
+from the tmux command prompt.
+
+Start the prompt by hitting `<prefix>:` and then enter the following command:
+
+```
+:attach-session -t . -c /path/to/base/directory
+```
+
+Here the `-t` specifies what session we are going to attach to. By giving it
+`.`, we tell it that we want to attach to the current session. The `-c`
+specifies our new base directory.
+
+Hit enter and then try opening a new window or pane to see that the new base
+directory has taken effect.
+
+[source](https://stackoverflow.com/questions/27307815/how-do-i-change-the-starting-directory-of-a-tmux-session#comment99821047_54444853)