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148 lines
4.2 KiB
Groff
148 lines
4.2 KiB
Groff
.\" $FreeBSD$
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.\"
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.TH ZMORE 1
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.SH NAME
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zmore \- file perusal filter for crt viewing of compressed text
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.SH SYNOPSIS
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.B zmore
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[ name ... ]
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.SH DESCRIPTION
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.I Zmore
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is a filter which allows examination of compressed or plain text files
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one screenful at a time on a soft-copy terminal.
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.I zmore
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works on files compressed with
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.I compress, pack
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or
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.I gzip,
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and also on uncompressed files.
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If a file does not exist,
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.I zmore
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looks for a file of the same name with the addition of a .gz, .z or .Z suffix.
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.PP
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.I Zmore
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normally pauses after each screenful, printing --More--
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at the bottom of the screen.
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If the user then types a carriage return, one more line is displayed.
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If the user hits a space,
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another screenful is displayed. Other possibilities are enumerated later.
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.PP
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.I Zmore
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looks in the file
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.I /usr/share/misc/termcap
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to determine terminal characteristics,
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and to determine the default window size.
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On a terminal capable of displaying 24 lines,
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the default window size is 22 lines.
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To use a pager other than the default
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.I more,
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set environment variable PAGER to the name of the desired program, such as
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.I less.
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.PP
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Other sequences which may be typed when
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.I zmore
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pauses, and their effects, are as follows (\fIi\fP is an optional integer
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argument, defaulting to 1) :
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.PP
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.IP \fIi\|\fP<space>
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display
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.I i
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more lines, (or another screenful if no argument is given)
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.PP
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.IP ^D
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display 11 more lines (a ``scroll'').
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If
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.I i
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is given, then the scroll size is set to \fIi\|\fP.
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.PP
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.IP d
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same as ^D (control-D)
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.PP
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.IP \fIi\|\fPz
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same as typing a space except that \fIi\|\fP, if present, becomes the new
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window size. Note that the window size reverts back to the default at the
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end of the current file.
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.PP
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.IP \fIi\|\fPs
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skip \fIi\|\fP lines and print a screenful of lines
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.PP
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.IP \fIi\|\fPf
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skip \fIi\fP screenfuls and print a screenful of lines
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.PP
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.IP "q or Q"
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quit reading the current file; go on to the next (if any)
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.PP
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.IP "e or q"
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When the prompt --More--(Next file:
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.IR file )
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is printed, this command causes zmore to exit.
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.PP
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.IP s
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When the prompt --More--(Next file:
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.IR file )
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is printed, this command causes zmore to skip the next file and continue.
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.PP
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.IP =
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Display the current line number.
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.PP
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.IP \fIi\|\fP/expr
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search for the \fIi\|\fP-th occurrence of the regular expression \fIexpr.\fP
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If the pattern is not found,
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.I zmore
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goes on to the next file (if any).
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Otherwise, a screenful is displayed, starting two lines before the place
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where the expression was found.
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The user's erase and kill characters may be used to edit the regular
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expression.
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Erasing back past the first column cancels the search command.
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.PP
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.IP \fIi\|\fPn
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search for the \fIi\|\fP-th occurrence of the last regular expression entered.
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.PP
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.IP !command
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invoke a shell with \fIcommand\|\fP.
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The character `!' in "command" are replaced with the
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previous shell command. The sequence "\\!" is replaced by "!".
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.PP
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.IP ":q or :Q"
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quit reading the current file; go on to the next (if any)
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(same as q or Q).
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.PP
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.IP .
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(dot) repeat the previous command.
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.PP
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The commands take effect immediately, i.e., it is not necessary to
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type a carriage return.
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Up to the time when the command character itself is given,
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the user may hit the line kill character to cancel the numerical
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argument being formed.
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In addition, the user may hit the erase character to redisplay the
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--More-- message.
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.PP
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At any time when output is being sent to the terminal, the user can
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hit the quit key (normally control\-\\).
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.I Zmore
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will stop sending output, and will display the usual --More--
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prompt.
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The user may then enter one of the above commands in the normal manner.
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Unfortunately, some output is lost when this is done, due to the
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fact that any characters waiting in the terminal's output queue
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are flushed when the quit signal occurs.
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.PP
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The terminal is set to
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.I noecho
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mode by this program so that the output can be continuous.
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What you type will thus not show on your terminal, except for the / and !
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commands.
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.PP
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If the standard output is not a teletype, then
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.I zmore
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acts just like
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.I zcat,
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except that a header is printed before each file.
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.SH FILES
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.DT
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/etc/termcap Terminal data base
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.SH "SEE ALSO"
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more(1), gzip(1), zdiff(1), zgrep(1), znew(1), zforce(1), gzexe(1)
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