Environment variables in etc/profile cannot be logged on.

Setting environment variables in etc/profile causes login failure solution 1, you cannot log on because you are accidentally setting environment variables in etc/profile. do not set exportPATH in etc/profile. this will cause the system to log on after the restart. in the logon interface, alt + ctrl + f2, enter the command. module... setting environment variables in etc/profile causes login failure solution 1, you cannot log on because you are accidentally setting environment variables in etc/profile. do not set export PATH in etc/profile. this will cause the system to fail to log on after restart. in the logon interface, alt + ctrl + f2 command mode, if the root user is not the root user, enter [the root user cannot be so arrogant, gedit editing will not display]/usr/bin/sudo/usr/bin/vi/etc/environment move cursor to export PATH ** row, delete this row two times in a row by d. Press: wq -- [here I am miserable, in fact, it is to press shift and then enter ":", then enter wq in the back] save and quit typing/sbin/reboot to restart the system