pushd: not found

The error message "pushd: not found" usually indicates that the pushd command is not installed or it is not available in the current shell or terminal session.

Pushd is a command used in Unix-based systems to change the current directory and save the previous directory on a stack so that it can be easily retrieved later.

To resolve the issue, you can try the following steps:

1. Check if the pushd command is installed on your system by typing "which pushd" in the terminal. If it returns nothing or an error message, it means pushd is not installed.

2. Install the pushd command if it is not already installed. The method of installation will depend on your operating system and package manager. For example, if you are using Ubuntu, you can install pushd by running the command "sudo apt-get install bash-builtins".

3. If pushd is installed but not available in the current shell or terminal session, you may need to source a different profile or log out and log back in to the terminal.

4. If you are still having issues, try using an alternative command to achieve the same functionality. For example, the "cd" command can be used to change directories, and the "dirs" command can be used to view and manipulate the directory stack.