In your example it's perfectly safe and it's just more explicit about the fact that the loop will execute just once. Get the file name from a full or relative path knowing that this one is not a parameter of the batch here (these are more advanced than batch files.) of course, if you are running a very old version of windows powershell, you need to open it as an admin and issue the following command
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In a batch file will echo the filename of each file in the folder
To do the same thing at the command line, use only one percent sign for the variable
You can replace echo with some other command. Type help call or call / From the command prompt for more information about all of the parameter expansion modifiers. You have a file name in an environment variable, and you want to decompose its path (say, extract the drive letter or get the file base name without any path information or extension)
Or you want to get the file’s size or date or attributes. In the following examples, we iterate a list of files and use the idiom ~ [idiom] to extract certain part of a given filename %~$path:i searches the directories listed in the path environment variable and expands %i to the fully qualified name of the first one found. Ultimately what i need/want to do is any line containing the flag *extra file or newer in the log file, to extract the file path and file name and use robocopy to copy those files to another drive, with copied files to go under a date and time stamped folder.
You'll find a solution here
