ROS installation: no such file or directory

Question

According to ros wiki, to set up environment, I typed

echo "source /opt/ros/kinetic/setup.bash" >> ~/.bashrc
source ~/.bashrc

The error is

/opt/ros/kinetic/setup.bash:.:8: no such file or directory: /home/pikashun/setup.sh

In ~/.bashrc file, there is the source /opt/ros/kinetic/setup.bash line.

I use Ubuntu on WSL. How can I improve?

Thank you!

Solution 1

I had the exact same issue. The problem is not due to setup.bash either ~/.bashrc but the shell that you are using. It turned out that you may be using a different shell than bash (i.e., zsh). When you are executing the setup.bash of ROS, zsh interprets the following command (whici is in /opt/ros/kinetic/setup.bash) differently:

_CATKIN_SETUP_DIR=$(builtin cd "`dirname "${BASH_SOURCE[0]}"`" > /dev/null && pwd)

It is setting the _CATKIN_SETUP_DIR to your user directory. That is why you are getting error, cause you using the wrong path: /home/user/setup.bash instead of /opt/ros/kinetic/setup.bash

To check whether this is the issue of your problem, you can check the shell that you are using by execute the following in the terminal:

echo $0; echo $SHELL

It may return something like:

zsh
/bin/zsh

To switch from zsh to bash, use:

exec bash

Once done this, you can use source without any problem.

And to switch back to your previous shell (assuming that is zsh), just use:

exec zsh

Solution 2

The file /opt/ros/kinetic/setup.bash does nothing but loading /opt/ros/kinetic/setup.sh from the same directory. I might be that you are not running bash (check which terminal you run), or that WSL has some different behavoiour than expected. However, your can just alter your append command like so:

 echo "source /opt/ros/kinetic/setup.sh" >> ~/.bashrc

or in your case, since the entry exists already in your ~/.bashrc, edit the line source /opt/ros/kinetic/setup.bash to source /opt/ros/kinetic/setup.sh

Solution 3

The packages or files were not actually downloaded from the "http://wiki.ros.org/melodic/Installation/Ubuntu". To overcome this error first open terminal

1. check your directory pwd. If your directory is like /home/'Your PC Name' it won't actually work.

2. Change the directory : Type cd /

3. Continue the installation process from start which mentioned in "http://wiki.ros.org/melodic/Installation/Ubuntu"

melodic can change to kinetic or other version if you wish

Comments

[Shubham Agrawal]

Instead of sourcing the bash file, try sourcing the zsh file as source /opt/ros/kinetic/setup.zsh.

[Alex]

I think @ShubhamAgrawal's answer is the right way to go, as it allows you to keep working in zsh.