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Full Discussion: What's the best way to check file permissions before moving files if needed?
Top Forums Shell Programming and Scripting What's the best way to check file permissions before moving files if needed? Post 303036925 by rbatte1 on Wednesday 17th of July 2019 12:52:05 PM
Old 07-17-2019
You might also consider the test options for files (man test for more detail)

Another alternative might be to use stat to get the value you need. Jim is right though, you don't just need to check the files, but the directory permissions too to ensure you can write to them. The update needed will create or remove the ile as part of the move. It can also be a nice way to get around sensitive data input in a particular place that supposedly has been locked down, i.e. the file payroll-input.txt might have RW for the owner, Read for a group you are not in and nothing for the rest, but if you have access to update the directory, you can remove or rename the file then create your own.

Smilie I'm not advocating it, but it is something consider and make everyone panic about simple security Smilie



The output from stat -c '%a %U %G' might give you the basics of what you need and you might parse them to decide if you should continue.



There are, however, lots of probably better suggestions before mine, such as that from MadeInGermany.



Just more options.

Kind regards,
Robin
 

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LEARN ABOUT NETBSD

dh_fixperms

DH_FIXPERMS(1)                                                       Debhelper                                                      DH_FIXPERMS(1)

NAME

       dh_fixperms - fix permissions of files in package build directories

SYNOPSIS

       dh_fixperms [debhelperoptions] [-Xitem]

DESCRIPTION

       dh_fixperms is a debhelper program that is responsible for setting the permissions of files and directories in package build directories to
       a sane state -- a state that complies with Debian policy.

       dh_fixperms makes all files in usr/share/doc in the package build directory (excluding files in the examples/ directory) be mode 644. It
       also changes the permissions of all man pages to mode 644. It removes group and other write permission from all files. It removes execute
       permissions from any libraries, headers, Perl modules, or desktop files that have it set. It makes all files in the standard bin and sbin
       directories, usr/games/ and etc/init.d executable (since v4). Finally, it removes the setuid and setgid bits from all files in the package.

       When the Rules-Requires-Root field has the (effective) value of binary-targets, dh_fixperms will also reset the ownership of all paths to
       "root:root".

OPTIONS

       -Xitem, --exclude item
           Exclude files that contain item anywhere in their filename from having their permissions changed. You may use this option multiple
           times to build up a list of things to exclude.

SEE ALSO

       debhelper(7)

       This program is a part of debhelper.

AUTHOR

       Joey Hess <joeyh@debian.org>

11.1.6ubuntu2                                                       2018-05-10                                                      DH_FIXPERMS(1)
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