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.TH SPELL 1 "Sep 15, 2011"
.SH NAME
spell, hashmake, spellin, hashcheck \- report spelling errors
.SH SYNOPSIS
.LP
.nf
\fBspell\fR [\fB-bilvx\fR] [+ \fIlocal_file\fR] [\fIfile\fR] ...
.fi

.LP
.nf
\fB/usr/lib/spell/hashmake\fR
.fi

.LP
.nf
\fB/usr/lib/spell/spellin\fR \fIn\fR
.fi

.LP
.nf
\fB/usr/lib/spell/hashcheck\fR \fIspelling_list\fR
.fi

.SH DESCRIPTION
.sp
.LP
The \fBspell\fR command collects words from the named \fBfile\fRs and looks
them up in a spelling list. Words that neither occur among nor are derivable
(by applying certain inflections, prefixes, or suffixes) from words in the
spelling list are written to the standard output.
.sp
.LP
If there are no \fBfile\fR arguments, words to check are collected from the
standard input. \fBspell\fR ignores most \fBtroff\fR(1), \fBtbl\fR(1), and
\fBeqn\fR(1) constructs. Copies of all output words are accumulated in the
history file (\fBspellhist\fR), and a \fBstop\fR list filters out misspellings
(for example, \fBtheir=thy\(miy+ier\fR) that would otherwise pass.
.sp
.LP
By default, \fBspell\fR (like \fBderoff\fR(1)) follows chains of included files
(\fB\&.so\fR and \fB\&.nx\fR \fBtroff\fR(1) requests), unless the names of such
included files begin with \fB/usr/lib\fR.
.sp
.LP
The standard spelling list is based on many sources, and while more haphazard
than an ordinary dictionary, is also more effective in respect to proper names
and popular technical words. Coverage of the specialized vocabularies of
biology, medicine and chemistry is light.
.sp
.LP
Three programs help maintain and check the hash lists used by \fBspell\fR:
.sp
.ne 2
.na
\fB\fBhashmake\fR\fR
.ad
.RS 13n
Reads a list of words from the standard input and writes the corresponding
nine-digit hash code on the standard output.
.RE

.sp
.ne 2
.na
\fB\fBspellin\fR\fR
.ad
.RS 13n
Reads \fIn\fR hash codes from the standard input and writes a compressed
spelling list on the standard output.
.RE

.sp
.ne 2
.na
\fB\fBhashcheck\fR\fR
.ad
.RS 13n
Reads a compressed \fIspelling_list\fR and recreates the nine-digit hash codes
for all the words in it. It writes these codes on the standard output.
.RE

.SH OPTIONS
.sp
.LP
The following options are supported:
.sp
.ne 2
.na
\fB\fB-b\fR\fR
.ad
.RS 15n
Check British spelling. Besides preferring \fBcentre\fR,  \fBcolour\fR,
\fBprogramme\fR, \fBspeciality\fR, \fBtravelled\fR, and so forth, this option
insists upon \fI\(miise\fR in words like \fBstandardise\fR.
.RE

.sp
.ne 2
.na
\fB\fB-i\fR\fR
.ad
.RS 15n
Cause  \fBderoff\fR(1) to ignore \fB\&.so\fR and \fB\&.nx\fR commands.  If
\fBderoff\fR(1) is not present on the system, then this  option is ignored.
.RE

.sp
.ne 2
.na
\fB\fB-l\fR\fR
.ad
.RS 15n
Follow the chains of \fIall\fR included files.
.RE

.sp
.ne 2
.na
\fB\fB-v\fR\fR
.ad
.RS 15n
Print all words not literally in the spelling list, as well as plausible
derivations from the  words in the spelling list.
.RE

.sp
.ne 2
.na
\fB\fB-x\fR\fR
.ad
.RS 15n
Print every plausible stem, one per line, with \fB=\fR preceding each word.
.RE

.sp
.ne 2
.na
\fB\fB+\fR\fIlocal_file\fR\fR
.ad
.RS 15n
Specify a set of words that are correct spellings (in addition to \fBspell\fR's
own spelling list) for each job. \fIlocal_file\fR is the name of a
user-provided file that contains a sorted list of words, one per line. Words
found in \fIlocal_file\fR are removed from \fBspell\fR's output. Use
\fBsort\fR(1) to order \fIlocal_file\fR in ASCII collating sequence. If this
ordering is not followed, some entries in \fIlocal_file\fR might be ignored.
.RE

.SH OPERANDS
.sp
.LP
The following operands are supported:
.sp
.ne 2
.na
\fB\fBfile\fR\fR
.ad
.RS 8n
A path name of a text file to check for spelling errors. If no files are named,
words are collected from the standard input.
.RE

.SH ENVIRONMENT VARIABLES
.sp
.LP
See \fBenviron\fR(5) for descriptions of the following environment variables
that affect the execution of \fBspell\fR: \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR,
and \fBNLSPATH\fR.
.SH EXIT STATUS
.sp
.LP
The following exit values are returned:
.sp
.ne 2
.na
\fB\fB0\fR\fR
.ad
.RS 6n
Successful completion.
.RE

.sp
.ne 2
.na
\fB\fB>0\fR\fR
.ad
.RS 6n
An error occurred.
.RE

.SH FILES
.sp
.ne 2
.na
\fB\fBD_SPELL=/usr/lib/spell/hlist[ab]\fR\fR
.ad
.sp .6
.RS 4n
hashed spelling lists, American & British
.RE

.sp
.ne 2
.na
\fB\fBS_SPELL=/usr/lib/spell/hstop\fR\fR
.ad
.sp .6
.RS 4n
hashed stop list
.RE

.sp
.ne 2
.na
\fB\fBH_SPELL=/var/adm/spellhist\fR\fR
.ad
.sp .6
.RS 4n
history file
.RE

.sp
.ne 2
.na
\fB\fB/usr/share/lib/dict/words\fR\fR
.ad
.sp .6
.RS 4n
master dictionary
.RE

.SH SEE ALSO
.sp
.LP
\fBderoff\fR(1), \fBeqn\fR(1), \fBsort\fR(1), \fBtbl\fR(1), \fBtroff\fR(1),
\fBattributes\fR(5), \fBenviron\fR(5)
.SH NOTES
.sp
.LP
\fBspell\fR works only on English words defined in the U.S. \fBASCII\fR
codeset.
.sp
.LP
Because copies of all output are accumulated in the \fBspellhist\fR file,
\fBspellhist\fR might grow quite large and require purging.
.SH BUGS
.sp
.LP
The spelling list's coverage is uneven. New installations might wish to monitor
the output for several months to gather local additions.
.sp
.LP
British spelling was done by an American.