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631b74793f
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sh.1tbl
26
sh.1tbl
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@ -1,4 +1,4 @@
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.\" $OpenBSD: sh.1tbl,v 1.34 2003/07/07 14:11:58 jmc Exp $
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.\" $OpenBSD: sh.1tbl,v 1.36 2003/09/04 14:21:43 jmc Exp $
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.\"
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.\" Copyright (c) 1980, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -275,7 +275,7 @@ shell and must be quoted if they are to represent themselves:
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.Ql { ,
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.Ql } ,
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.Ql * ,
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.Ql ? ,
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.Ql \&? ,
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and
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.Ql [ .
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The first three of these are the above mentioned quoting characters (see
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@ -308,7 +308,7 @@ style alterations (see
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below);
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and finally,
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.Ql * ,
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.Ql ? ,
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.Ql \&? ,
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and
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.Ql [
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are used in file name generation (see
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@ -364,7 +364,7 @@ last is piped (see
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to the standard input of the following command.
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The exit status of a pipeline is that of its last command.
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A pipeline may be prefixed by the
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.Ql !
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.Ql \&!
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reversed word which causes the exit status of the pipeline to be logically
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complemented: if the original status was 0 the complemented status will be 1;
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if the original status was not 0, the complemented status will be 0.
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@ -1076,7 +1076,7 @@ command below for list of options).
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.It Ev \&?
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The exit status of the last non-asynchronous command executed.
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If the last command was killed by a signal,
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.Ic \&$\&?
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.Ic \&$?\&
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is set to 128 plus the signal number.
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.It Ev 0
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The name the shell was invoked with (i.e.,
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@ -1324,7 +1324,7 @@ command may be used to list, change, and add to this cache (e.g.,
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.Ic alias -d fac=/usr/local/facilities; cd ~fac/bin ) .
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.Ss File name patterns
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A file name pattern is a word containing one or more unquoted
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.Ql ?
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.Ql \&?
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or
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.Ql *
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characters or
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@ -1357,7 +1357,7 @@ Similarly, a
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must be quoted or the first character in the list if it is to represent itself
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instead of the end of the list.
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Also, a
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.Ql !
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.Ql \&!
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appearing at the start of the list has special meaning (see below), so to
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represent itself it must be quoted or appear later in the list.
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.It Ic \&[\&! Ns No .. Ns Ic \&]
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@ -2017,7 +2017,7 @@ command substitutions performed in generating the
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.Ic set
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command.
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For example,
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.Ic set \&-\&- `false`; echo $?
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.Ic set \&-\&- `false`; echo $?\&
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prints 0 in
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.Tn POSIX
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mode, 1 in
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@ -2408,7 +2408,7 @@ The shell exits with the specified exit status.
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If
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.Ar status
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is not specified, the exit status is the current value of the
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.Ic \&?
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.Ic ?\&
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parameter.
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.It Xo Ic export Op Fl p
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.Op Ar parameter Ns Op \&= Ns Ar value
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@ -3066,7 +3066,7 @@ is set (see
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.Ic set
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command above for a list of options).
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As a non-standard extension, if the option starts with a
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.Ql ! ,
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.Ql \&! ,
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the test is negated; the test always fails if
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.Ar option
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doesn't exist (thus
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@ -3168,15 +3168,15 @@ arguments to
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or
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.Ic \&[ ... \&]
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is less than five; if leading
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.Ql !
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.Ql \&!
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arguments can be stripped such that only one argument remains then a string
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length test is performed (again, even if the argument is a unary operator); if
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leading
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.Ql !
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.Ql \&!
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arguments can be stripped such that three arguments remain and the second
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argument is a binary operator, then the binary operation is performed (even
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if the first argument is a unary operator, including an unstripped
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.Ql ! ) .
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.Ql \&! ) .
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.Pp
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.Sy Note:
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A common mistake is to use
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