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

Ctrl-@
If this is the first character typed after entering insert mode, the previously
typed insert mode contents are repeated. After this, you exit insert mode.
Only up to 256 characters from the previous insertion are inserted.
ESC Leaves insert mode.
INTERRUPT
Leaves insert mode.
ex Command Mode
vi enters ex command mode if the program is invoked with the –e option or if the Q
command is issued from vi. You can issue a single ex command from vi using the :
command.
An ex command takes the general form:
[address-list] [[command] [!] [parameters]]
Each part is optional and may be invalid for some commands. You can specify
multiple commands on a line by separating them with an or-bar |.
address-list
Commands can take zero, one, or two addresses. The address % is a short
form to indicate the entire file. You can omit any or all of the addresses. In
the command descriptions to follow, the addresses shown are the
addresses that the commands use by default. Possible default addresses
are:
[.,.] Indicates a two-address line range defaulting to the current line.
[1,$] Indicates a two-address line range defaulting to the entire file.
[.+1] Indicates a single address defaulting to the next line.
address
An address refers to a line in the text being edited. An address can be an
expression involving the following forms:
. The value of dot; that is, the current line.
n A line number indicating an absolute line in the file; the first line has
absolute line number 1.
$ The last line in the file.
+[n] n lines forward in the file. If you omit n, it defaults to 1.
–[n] n lines backward in the file. If you omit n, it defaults to 1.
’x The value of the mark x.
/pat/ Search for regular expression pat forward from the current line.
?pat? Search for regular expression pat backwards from the current line.
Thus:
/pattern/+3
++
100
are three addresses: the first searches for a pattern and then goes three
lines further; the second indicates two lines after dot; and the third indicates
the 100th line in the file.
vi
Chapter 2. Shell command descriptions 769