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'\" t
.\" Title: isutf8
.\" Author: Lars Wirzenius <liw@iki.fi>
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\" Date: 09/19/2021
.\" Manual: moreutils
.\" Source: moreutils
.\" Language: English
.\"
.TH "ISUTF8" "1" "09/19/2021" "moreutils" "moreutils"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
isutf8 \- check whether files are valid UTF\-8
.SH "SYNOPSIS"
.HP \w'\fBisutf8\fR\ 'u
\fBisutf8\fR [\fB\-hqliv\fR] [\fB\-\-help\fR] [\fB\-\-quiet\fR] [\fB\-\-list\fR] [\fB\-\-invert\fR] [\fB\-\-verbose\fR] [[\fIfile\fR...]]
.SH "DESCRIPTION"
.PP
\fBisutf8\fR
checks whether files are syntactically valid UTF\-8\&. Input is either files named on the command line, or the standard input\&. Notices about files with invalid UTF\-8 are printed to standard output\&.
.SH "OPTIONS"
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
Print out a help summary\&.
.RE
.PP
\fB\-q\fR, \fB\-\-quiet\fR
.RS 4
Don\*(Aqt print messages telling which files are invalid UTF\-8, merely indicate it with the exit status\&.
.RE
.PP
\fB\-l\fR, \fB\-\-list\fR
.RS 4
Print only the names of files containing invalid UTF\-8\&.
.RE
.PP
\fB\-i\fR, \fB\-\-invert\fR
.RS 4
Invert the selection: list UTF\-8 compatible files\&.
.RE
.PP
\fB\-v\fR, \fB\-\-verbose\fR
.RS 4
Also print an hexdump\-like view of the error and some context\&.
.RE
.SH "EXIT STATUS"
.PP
If the file is valid UTF\-8, the exit status is zero\&. If the file is not valid UTF\-8, or there is some error, the exit status is non\-zero\&.
.SH "AUTHOR"
.PP
Lars Wirzenius, Julien Palard
.SH "SEE ALSO"
.PP
\fButf8\fR(7)
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