A memo of what I did from a blank state to searching for characters using the "grep command" on "Ubuntu"

at first

• What is Ubuntu?
  Recommended site: https://wa3.i-3-i.info/word15508.html

Execution environment

• OS：Windous10 Home
• Ubuntu：Verison 20.04 LTS

Ubuntu installation

• Installed from the Windows Store.
  https://www.microsoft.com/store/productId/9N6SVWS3RX71

Ubuntu version check command

• When checking the version of Ubuntu, I executed the following command.

Ubuntu version check command

$ cat /etc/issue

In my case, the output is as follows.

Ubuntu 20.04 1 LTS \n \l

I noticed that the path of the sudo command is not in the path

1. Change to the following directory.

C:\Users\<User name>\AppData\Local\Packages\CanonicalGroupLimited.Ubuntu20.04onWindows_79rhkp1fndgsc\LocalState\rootfs\etc\sudoers.d

2. Open the file `99-snapd.conf``` in the sudoers.d``` folder at the end with Notepad etc., and open the `` secure_path``` part as follows Edited as.

# Allow snap-provided applications to work with sudo
Defaults    secure_path += /usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

• Make a backup for the time being!

To eliminate the "Permission Denied" error

• The error I got when I tried to run the cat and grep commands.
• Occurs because you did not have permission to open the prepared text file to be searched.
• The following command was executed to give permission to edit the prepared text file.

$ chmod 764 -c <file name>

• The following site is easy to understand about how to grant authority when this "Permission Denied" error occurs. https://lpic.hatenablog.com/entry/chmod%E3%82%B3%E3%83%9E%E3%83%B3%E3%83%89%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95