When you configure MySQL, you make a global variable, with fewer "$" symbols, which causes all commands to be executed.
At first I couldn't figure out why all the orders couldn't be executed.
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To add a "$"
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Please use, command full path edit/etc/profile:
Input:/usr/bin/vim/etc/profile
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Note that there are spaces after vim
Then delete the original modified content
Reboot. Shutdown-r Now or reboot
This article is from the "Pcjazz" blog, make sure to keep this source http://520527.blog.51cto.com/510527/1885734
Global variables cause all commands to be executed.