It Depending on what the file should contain:
- touch /path/to/file for an empty file
- somecommand > /path/to/file for a file containing the output of some command.
- eg: grep --help > randomtext.txt
- echo "This is some text" > randomtext.txt
- nano /path/to/file or vi /path/to/file (or any other editor emacs,gedit etc)
It will open the existing file for editing or creates & opens an empty file to enter, if it doesn't exist
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