Linux OS Editors Question:

Which command is used to delete the character before the cursor location in vi editor?
a) X
b) x
c) D
d) d

a) X

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Which one of the following statement is not true? a) vim editor is the improved version of vi editor b) vi editor commands are not case sensitive c) vi editor has two modes of operation: command mode and insert mode d) vi stands for visual editor	Which command is used to close the vi editor? a) q b) wq c) both (a) and (b) d) none of the mentioned