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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 303036856 by Cacializ on Sunday 14th of July 2019 03:13:35 PM
Old 07-14-2019
What's the best way to check file permissions before moving files if needed?
Hello,
I would like to know if it's a good practice to check the file permissions of the contents of a directory before moving them. For example:
Code:
mv -- "$directory"/* "$directory"/.[!.]* "$directory"/..?* "$destination"

The variables $directory and $destination contain the path to an existing directory. The problem is that I don't have control of the user's directory who runs the script so, in theory, the files may not have the needed permissions to be moved, and the directory is required to be empty. What's a good way to check if every file was moved successfully?

The first thing that came to mind is to check the exit status of the command:
Code:
mv -- "$directory"/* "$directory"/.[!.]* "$directory"/..?* "$destination" || exit 1

However, this doesn't mean a file couldn't be moved, because it can also exit because of a non-existing directory entry as a result of the glob. I also thought of checking if the directory is actually empty:
Code:
for entry in "$directory"/* "$directory"/.[!.]* "$directory"/..?*
do
    if [ -e "$entry" ] || [ -L "$entry" ]
    then
        printf "A file couldn't be moved.\n" 1>&2
        exit 1
    fi
done

But I'd like to know if this check is unnecessary. I also thought about checking if every single file has the needed permissions before using the mv command, but I'm afraid that would be superfluous.
Thanks in advance.
Last edited by Cacializ; 07-14-2019 at 04:32 PM..
 

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LEARN ABOUT HPUX

delete_directory

delete directory(1m)													      delete directory(1m)

NAME

       delete directory - Deletes a directory

SYNOPSIS

       cdscp delete directory directory-name

ARGUMENTS

       The full name of the directory.

DESCRIPTION

       The  delete  directory  command	deletes a directory.  The directory cannot contain any object entries, soft links, or child pointers.  The
       master replica must be the only remaining replica in the cell.  Use the delete replica command if you need to remove read-only replicas.

   Privilege Required
       You must have delete permission to the directory and write permission to the clearinghouse that stores the master replica of the directory.
       The  server  principal  needs  administer  permission  to the parent directory or delete permission to the child pointer that points to the
       directory you intend to delete.

NOTE

       This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE.

EXAMPLE

       The following command deletes the directory /.:/eng from the namespace: cdscp> delete directory /.:/eng

RELATED INFORMATION

       Commands: create directory(1m), delete replica(1m), list directory(1m), set directory(1m), set directory to skulk(1m), show directory(1m)

															      delete directory(1m)
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