You should yank the text to the * or + registers:
gg"*yG
Explanation:
ggto get the cursor to the first character of the file"*yto start a yank command to the register*from the first line, until…Gto go the end of the file
You should yank the text to the * or + registers:
gg"*yG
Explanation:
gg to get the cursor to the first character of the file"*y to start a yank command to the register * from the first line, until…G to go the end of the file