WSL Tmux Extra Pane cannot open Code and Window Native Command — Command not Found

Problem

The command that link to Window binary e.g.,

1. code of VS code
2. explorer.exe file explorer

is not found in WSL on Tmux extra pane

But work fine in the main terminal

zsh: command not found: code

Root Cause

The PATH is automatically injected into the main Teminal.

But not inherit in the Tmux pane.

You can check it easily by compare output of this command in main pane and Tmux pane.

echo $PATH

Solution

Adding this line to .zshrc

Anything that is missing on your Tmux pane by comparing the output of above command.

export PATH=$PATH:/mnt/c/Windows/system32
export PATH=$PATH:/mnt/c/Windows
export PATH=$PATH:/mnt/c/Windows/System32/Wbem
export PATH=$PATH:/mnt/c/Windows/System32/WindowsPowerShell/v1.0/
export PATH=$PATH:/mnt/c/Windows/System32/OpenSSH/
export PATH=$PATH:"/mnt/c/Program Files/Docker/Docker/resources/bin"
export PATH=$PATH:/mnt/c/Users/username/AppData/Local/Microsoft/WindowsApps
export PATH=$PATH:"/mnt/c/Users/username/AppData/Local/Programs/Microsoft VS Code/bin"

Then reopen the Tmux pane.