validate - run many filetest checks on a tree

- NAME
- SYNOPSIS
- DESCRIPTION
- AUTHOR
- HISTORY

# NAME

validate - run many filetest checks on a tree

# SYNOPSIS

        use File::CheckTree;

        $num_warnings = validate( q{
            /vmunix                 -e || die
            /boot                   -e || die
            /bin                    cd
                csh                 -ex
                csh                 !-ug
                sh                  -ex
                sh                  !-ug
            /usr                    -d || warn "What happened to $file?\n"
        });

# DESCRIPTION

The `validate()` routine takes a single multiline string consisting of directives, each containing a filename plus a file test to try on it. (The file test may also be a ``cd'', causing subsequent relative filenames to be interpreted relative to that directory.) After the file test you may put `|| die` to make it a fatal error if the file test fails. The default is `|| warn`. The file test may optionally have a ``!' prepended to test for the opposite condition. If you do a cd and then list some relative filenames, you may want to indent them slightly for readability. If you supply your own `die()` or `warn()` message, you can use $file to interpolate the filename.

Filetests may be bunched: ``-rwx'' tests for all of `-r`, `-w`, and `-x`. Only the first failed test of the bunch will produce a warning.

The routine returns the number of warnings issued.

# AUTHOR

File::CheckTree was derived from lib/validate.pl which was written by Larry Wall. Revised by Paul Grassie <grassie@perl.com> in 2002.

# HISTORY

File::CheckTree used to not display fatal error messages. It used to count only those warnings produced by a generic `|| warn` (and not those in which the user supplied the message). In addition, the `validate()` routine would leave the user program in whatever directory was last entered through the use of ``cd'' directives. These bugs were fixed during the development of perl 5.8. The first fixed version of File::CheckTree was 4.2.

validate - run many filetest checks on a tree