z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

vi
These lines are not part of the file content and should be ignored.
vi Command Summary
vi commands can be divided into several categories:
v Scrolling commands adjust the position of text on the screen. The current
position pointer only changes if the current line is scrolled off the screen. For
example, Ctrl-E scrolls the text on the screen up one line. The cursor remains
pointing to the same text that it was pointing to, unless that text is moved off the
screen.
v Movement commands move the cursor in the file. For example, the character j
moves the cursor down one line and the screen is scrolled only if necessary.
There are two types of movement commands:
– Absolute movement commands move the cursor, regardless of the nature of
the surrounding text. For example, j always moves the cursor down one line.
Absolute movement commands are listed in “Absolute Movement Commands”
on page 761.
– Context-dependent movement commands move move the cursor based on
the nature of the text; for example, w moves the cursor to the beginning of the
next word, so it must look at the text to determine where the next word
begins.
Context-dependent movement commands are listed in “Context-Dependent
Movement Commands” on page 762.
v Text insertion commands let you add new text to the existing text. They are listed
in “Text Insertion Commands” on page 766.
v Manipulation commands let you change the text that is already in the file. They
are listed in “Object Manipulator Commands” on page 764.
Scrolling Commands
vi scrolling and movement commands can be preceded by a decimal integer that
serves as a count, as in:
[count] command
count means different things with different commands. If you type count, it is not
displayed anywhere on the screen.
Ctrl-B Scrolls text back by a page, (that is, a screen), less two lines. The cursor is
placed on the bottom line of the screen. count specifies a number of pages
to scroll. The default value for count is 1.
Ctrl-D Scrolls text onto the bottom of the screen. The current position pointer
moves forward the same amount in the text, which means that the cursor
stays in the same relative position on the screen. If count is given, the
screen scrolls forward by the given number of lines; this number is used for
all future Ctrl-D and Ctrl-U commands (until a new count is given). The
default scrolling amount is half the screen.
Ctrl-E Scrolls a new line onto the bottom of the screen. The current position
pointer is not changed unless the current line scrolls off the top of the
screen; then the pointer is set to the top line. If count is given, the screen
scrolls forward the given number of lines. The default value for count is 1.
Ctrl-F Scrolls text forward a page (that is, a screen), less two lines. The cursor is
placed on the top line of the screen. count specifies the number of pages to
scroll. The default value for count is 1.
760 z/OS V1R9.0 UNIX System Services Command Reference