Linux normal users cannot use the TAB key, the up and down keys

Starting point

Today installed using Kail Linux when the tab command can not be complete, combined with Ubuntu, because the default Ubuntu created by the normal account, the default shell is/bin/sh, and this does not support tab key, so the "designated user" account of the shell changed to/bin/ Bash can

Operation

1. View the current shell:# echo $SHELL/bin/sh2. Modify the SHELL to/bin/bash: (Switch to root user execution) # usermod-s/bin/bash user Name

Linux normal users cannot use the TAB key, the up and down keys