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Zmore: View Compressed Text Files

Zmore is a filter that allows users to view compressed or plain text files page by page on terminals. It works with files compressed by compress, pack, or gzip, as well as uncompressed files. As the user reaches the end of each page, Zmore displays "--More--" and waits for a command like pressing space to view the next page or Q to quit. It determines terminal characteristics from /etc/termcap to set the default page size. Users can also search text, run shell commands, and repeat previous commands while viewing files with Zmore.

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0% found this document useful (0 votes)
25 views2 pages

Zmore: View Compressed Text Files

Zmore is a filter that allows users to view compressed or plain text files page by page on terminals. It works with files compressed by compress, pack, or gzip, as well as uncompressed files. As the user reaches the end of each page, Zmore displays "--More--" and waits for a command like pressing space to view the next page or Q to quit. It determines terminal characteristics from /etc/termcap to set the default page size. Users can also search text, run shell commands, and repeat previous commands while viewing files with Zmore.

Uploaded by

bubba
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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ZMORE(1) General Commands Manual ZMORE(1)

NAME
zmore - file perusal filter for crt viewing of compressed text
SYNOPSIS
zmore [ name ... ]
DESCRIPTION
Zmore is a filter which allows examination of compressed or plain text files one screenful at a time on a
soft-copy terminal. zmore works on files compressed with compress, pack or gzip, and also on uncom-
pressed files. If a file does not exist, zmore looks for a file of the same name with the addition of a .gz, .z or
.Z suffix.
Zmore 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 possibilities are enumerated later.
Zmore looks in the file /etc/termcap to determine terminal characteristics, and to determine the default win-
dow size. On a terminal capable of displaying 24 lines, the default window size is 22 lines. To use a pager
other than the default more, set environment variable PAGER to the name of the desired program, such as
less.
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)
ˆD display 11 more lines (a ‘‘scroll’’). If i is given, then the scroll size is set to i.
d same as ˆD (control-D)
iz same as typing a space except that i, if present, becomes the new window size.
is skip i lines and print a screenful of lines
if skip i screenfuls and print a screenful of lines
q or Q Quit.
= Display the current line number.
i/expr search for the i-th occurrence of the regular expression expr. 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.
in search for the i-th occurrence of the last regular expression entered.
!command
invoke a shell with command. The character ‘!’ in "command" is replaced with the previous shell
command. The sequence "\!" is replaced by "!".
:q or :Q
Quit (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.

1
ZMORE(1) General Commands Manual ZMORE(1)

If the standard output is not a teletype, then zmore acts just like zcat, except that a header is printed before
each file if there is more than one file.
FILES
/etc/termcap
Terminal data base
SEE ALSO
more(1), gzip(1), zdiff(1), zgrep(1), znew(1), zforce(1), gzexe(1)

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