Introduction to Unix and Networks

THE ESSENTIAL Vi
To enter the vi screen editor, gotoanxter m window and type: vi
NOTES: i) The CONTROL key is represented by ˆ,use like the shift key
ii) The ESCAPE key is represented by {ESC}.
The ESCAPE key must be released before the command character is pressed.
iii) The BACKSPACE key is represented by {bs}.
The vi text editor has two modes. Itcan either be in text insert or command mode. Note that vi puts tilde
characters down the lefthand side of the test window tomar k the position of empty lines in the text buffer.
When vi starts up it is in Command Mode, soyou need to just pressibefore entering text.
If you want to append text to an existing buffer, useainstead ofibefore entering text.
Te xt
inser t
mode
esc
i
Command
mode
Yo u stee r the cur sor abou t in Comma n d mo d e by key i ng one of sev era l spec i al cha r s:
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Ba ckwar ds Forwa r ds
h Char l or use arrow key s
MO VE: e Word b cur sor moves on same l ine
Upwar ds Dow n wa rds
k Line j or use arrow key s
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Ba ckwar ds Forwa r ds
x Char de l et e charac ter
DE L ETE : Word dw del ete wor d
Line dd de lete cur ren t line
d$ de lete to end of l ine
Block ma . ...d’ a ma r k start of block ,
mo ve the cur sor to block end , and de lete
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In Comma n d mo d e you can enter Tex t Mo d e us i ng :
Re t ur n to Comma n d Mo d e from Tex t Mo d e :
i - inse r t tex t before the cur ren t cu rso r po s ition
I - inse r t tex t at the beg inni ngofthe cur ren t line
a - append tex t af ter the cur ren t cu rso r po s ition
A - append tex t at the end of the cur ren t line
o - open s anew l ine for inpu t be l ow t he cur ren t line .
O - open s anew l ine for inpu t abo ve the cur ren t line .
es c - ret urn to comma n d mo d e
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BLOC K MO V ING ma mar k star t of "a" block
y’a takes a copy o f block f rom ’a to cur ren t
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SEARCH
/wor d sear che s fo r wo r d
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YA N KBACK :
Y copy l ine int o yank bac k bu f fe r
yw copy cur ren t wo r d int o yank bac k bu f fe r
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