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zmore - file perusal filter for crt viewing of compressed text
zmore [ name ... ]
Zmore is a filter which allows examination
of compressed text files one screenful at a time on a soft-copy terminal.
It normally pauses after each screenful, printing --More-- at the bottom of
the screen. If the user then types a carriage return, one more line is
displayed. If the user hits a space, another screenful is displayed. Other
possibilites are enumerated later.
Zmore looks in the file /etc/termcap
to determine terminal characteristics, and to determine the default window
size. On a terminal capable of displaying 24 lines, the default window
size is 22 lines.
Other sequences which may be typed when zmore pauses,
and their effects, are as follows (i is an optional integer argument,
defaulting to 1) :
- i <space>
- display i more lines, (or another screenful
if no argument is given)
- ^D
- display 11 more lines (a ``scroll''). If i is given,
then the scroll size is set to i .
- d
- same as ^D (control-D)
- i z
- same as typing
a space except that i , if present, becomes the new window size. Note
that the window size reverts back to the default at the end of the current
file.
- i s
- skip i lines and print a screenful of lines
- i f
- skip i screenfuls
and print a screenful of lines
- q or Q
- quit reading the current file; go
on to the next (if any)
- e
- When the prompt --More--(Next file: file) is printed,
this command causes zmore to exit.
- =
- Display the current line number.
- i
/expr
- search for the i -th occurrence of the regular expression expr. If
the pattern is not found, zmore goes on to the next file (if any). Otherwise,
a screenful is displayed, starting two lines before the place where the
expression was found. The user's erase and kill characters may be used to
edit the regular expression. Erasing back past the first column cancels
the search command.
- i n
- search for the i -th occurrence of the last regular
expression entered.
- !command
- invoke a shell with command . The character
`!' in "command" are replaced with the the previous shell command. The sequence
"\!" is replaced by "!".
- :q or :Q
- quit reading the current file; go on to
the next (if any) (same as q or Q).
- .
- (dot) repeat the previous command.
The commands take effect immediately, i.e., it is not necessary to type
a carriage return. Up to the time when the command character itself is
given, the user may hit the line kill character to cancel the numerical
argument being formed. In addition, the user may hit the erase character
to redisplay the --More-- message.
At any time when output is being sent to
the terminal, the user can hit the quit key (normally control-\). Zmore will
stop sending output, and will display the usual --More-- prompt. The user may
then enter one of the above commands in the normal manner. Unfortunately,
some output is lost when this is done, due to the fact that any characters
waiting in the terminal's output queue are flushed when the quit signal
occurs.
The terminal is set to noecho mode by this program so that the
output can be continuous. What you type will thus not show on your terminal,
except for the / and ! commands.
If the standard output is not a teletype,
then zmore acts just like zcat, except that a header is printed before
each file.
/etc/termcap Terminal data base
more(1)
, zcat(1)
,
compress(1)
, uncompress(1)
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