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 sor \- combine shell predicates with logical or
 .SH SYNOPSIS
 .B sor
+.RI [\| OPTION ...\]
 .IR SNIPPET ...
 .SH DESCRIPTION
 Read paths from standard input. For each path, evaluate each argument as a
 .BR bash (1)
 snippet with the path as the first argument. Print the path to standard output
 if any of the snippets exits with status 0.
+.SH OPTIONS
+.TP
+\fB-0, --null\fP
+Filenames are terminated using the null character \fB\\0\fP instead of
+newlines, for both input and output.
+Suitable for use with \fBwalk -0\fP.
+.TP
+\fB--help\fP
+Print a summary of the usage of \fBsor\fP and exit.
 .SH EXAMPLE
 .EX
 walk /etc | sor 'test -f'