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单选题
Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into a bash initialization file will have bash recognize vi keystrokes after login？（）
A
history-pvi
B
alias emacs=vi
C
HISTCMD=vi
D
set -o vi
E
unset emacs
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考题
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history-pviB
alias emacs=viC
HISTCMD=viD
set -o viE
unset emacs
考题
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Login as the user and run 'echo $ENV'.B
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考题
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Login as root and run the ’env’ command.C
Login as root and ’cat /etc/environment’.D
Login as the user and run the ’env’ command.
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ksh -n nextbootB
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Issue the command： export EDITOR=/usr/bin/editB
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Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITORD
Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit
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