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.\"
.IX Title "ShellQuote 3"
.TH ShellQuote 3 "2010-06-11" "perl v5.26.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
String::ShellQuote \- quote strings for passing through the shell
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\&    $string = shell_quote @list;
\&    $string = shell_quote_best_effort @list;
\&    $string = shell_comment_quote $string;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module contains some functions which are useful for quoting strings
which are going to pass through the shell or a shell-like object.
.IP "\fBshell_quote\fR [\fIstring\fR]..." 4
.IX Item "shell_quote [string]..."
\&\fBshell_quote\fR quotes strings so they can be passed through the shell.
Each \fIstring\fR is quoted so that the shell will pass it along as a
single argument and without further interpretation.  If no \fIstring\fRs
are given an empty string is returned.
.Sp
If any \fIstring\fR can't be safely quoted \fBshell_quote\fR will \fBcroak\fR.
.IP "\fBshell_quote_best_effort\fR [\fIstring\fR]..." 4
.IX Item "shell_quote_best_effort [string]..."
This is like \fBshell_quote\fR, excpet if the string can't be safely quoted
it does the best it can and returns the result, instead of dying.
.IP "\fBshell_comment_quote\fR [\fIstring\fR]" 4
.IX Item "shell_comment_quote [string]"
\&\fBshell_comment_quote\fR quotes the \fIstring\fR so that it can safely be
included in a shell-style comment (the current algorithm is that a sharp
character is placed after any newlines in the string).
.Sp
This routine might be changed to accept multiple \fIstring\fR arguments
in the future.  I haven't done this yet because I'm not sure if the
\&\fIstring\fRs should be joined with blanks ($") or nothing ($,).  Cast
your vote today!  Be sure to justify your answer.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
.Vb 2
\&    $cmd = \*(Aqfuser 2>/dev/null \*(Aq . shell_quote @files;
\&    @pids = split \*(Aq \*(Aq, \`$cmd\`;
\&
\&    print CFG "# Configured by: ",
\&                shell_comment_quote($ENV{LOGNAME}), "\en";
.Ve
.SH "BUGS"
.IX Header "BUGS"
Only Bourne shell quoting is supported.  I'd like to add other shells
(particularly cmd.exe), but I'm not familiar with them.  It would be a
big help if somebody supplied the details.
.SH "AUTHOR"
.IX Header "AUTHOR"
Roderick Schertler <\fIroderick@argon.org\fR>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBperl\fR\|(1).