How to copy file path to clipboard?

1. Select a FILE, then CTRL+C (in GUI, "Files", Nautilus). Paste anywhere and you will get the full file path.

... to be complete:

2. Drop a file (icon) in Terminal, i.e. at the Bash prompt and you'll see the file+path.

3. Select any text, a filename and or path in the Terminal, CTRL+SHIFT+C copies it, SHIFT+CTRL+V to paste in the terminal, CTRL+V everywhere else.

4. Type this in Terminal (Hit Enter after each line) and you will have a new clipb command to use there:

sudo apt install xclip
cd 
mkdir bin
cat >bin/clipb <<EOF
#!/bin/bash
# Linux version
# Use this script to pipe in/out of the clipboard
#
# Usage: someapp | clipboard     # Pipe someapp's output into clipboard
#        clipboard | someapp     # Pipe clipboard's content into someapp
#
    
if command -v xclip 1>/dev/null; then
    if [[ -p /dev/stdin ]] ; then
        # stdin is a pipe
        # stdin -> clipboard
        xclip -i -selection clipboard
    else
        # stdin is not a pipe
        # clipboard -> stdout
        xclip -o -selection clipboard
    fi
else
    echo "Remember to install xclip"
fi
EOF
chmod 755 bin/clipb
echo >>.bash_aliases "export PATH=\$HOME/bin:\$PATH"

e.g. $ echo hello | clipb will have you paste hello anywhere with CTRL+V / SHIFT+CTRL+V (in a terminal).

If you copy the file with right click and then paste on a text field it will paste the whole path to that file as text.