Dos batch file examples date

Example: The following example compare the contents of file1. Example: The following example display the department variable:. This command allows you to check if a file exists.

This command allows you to ends a batch file or command prompt. This command allows you to creates a for loop that polls the commands one after the other at the frequency indicated in parentheses. This command allows you to integrate conditions within batch files, similar to JavaScript for example. All commands coming after REM or :: are considered as comments by the console. This command allows you to go directly to a specific location in a batch file.

The executed batch file is stopped and the console displays the message Press any key to continue…. This command allows you to call a batch file from another batch file. Example: The following example call SecondScript. This command allows you to read and delete variables in the command prompt. This command allows you to change the title of the command prompt window. This command allows you to start some programs or some commands.

Example: The following example will start two programs called Notepad and Calculator. This command allows you to closes the session, restarts the computer, or shuts it down.

Example: The following example will shut down your computer in 60 seconds. This command allows you to search for one or more files by using character input. This command allows you to display data page by page on the screen. For example, you are writing a script which If your current date time is Nov 02, , then the above example will create a file in the current directory with.

Current date stamp at the end of the batch file and use the variable that is created circular. Year after dying naming convention that it is triggering errors on the program!

Jun 06, Checking the date format. I made a simple batch script that will just return the current date and under it write some numbers. There are some problems with this code - particularly the point that it crashes with a blank screen if TEMP points to a drive with removable media that has been removed or if there are any other errors that cause an ARF Abort, Retry, Fail error message.

Someone asked about getting DIR listings for a list of extensions - I have expanded that to include named categories of files in this example. While it might seem appropriate to put this in the writeup on DIR, I put it here and referenced it from several of the other places it might belong - it illustrates far too many esoteric features of batch language to warrant putting it with any specific command. Type names are always at least four characters so that they can't conflict with real extensions of one, two, or usually three characters.

If any arguments are used, the first must be the path to the directory, often just '. The latter adds a bit of complication to the program. NULL is not really a type - it's a place holder for a blank - so it can be combined with other extensions in a list; regular type names cannot be combined into lists.

This program pages the display - if that is not needed it can be simplified somewhat. Almost every line of this batch file would make a good exam question - the task itself would be a good challenge for extra credit - the above solution would almost do as a final exam all by itself. There are few students of batch language who can be expected to understand that code, so I have provided a line-by-line explanation as a separate file.

These are left as exercises for the reader. They are not impossible - even totaling the byte counts is possible - but they do add significant amounts of both code and complication, and this example is complicated enough already four layers and two command processors deep. This knock off tells whether or not a directory exists.

It should work with most networks, but has a number of drawbacks if there is any possibility that the root directory is empty or the drive doesn't exist, or any of the other cases that generate ARF Abort, Retry, Fail errors apply - it will stop cold waiting for user input. The first argument is the drive letter without the colon and the second is enough of the path to the directory to ensure unique identification, usually the entire path.

This code is fairly fragile so should not be used except from another batch file, where the drive is known to contain at least one directory, and where the drive has non-removable media hard disks and network drives if the batch file is on the network so it won't be run unless the network is connected.

From time to time someone asks if it is possible to create random filenames in batch programs. While it might seem that something as deterministic as a batch language would not even have a randomizer, and it doesn't The answer to that one provides the mechanism for capturing one of those filenames - the TEMP environment variable wasn't set, so DOS and MORE used the default directory as a place to put the transient files used by the pipe, and since the pipe is set up before the DIR command is executed, the transient files show up in the listing as empty files.

What we did was to isolate ourselves in an empty directory so the only files to be seen are the transients, then filter the listing for zero length files a '0' with spaces on both sides. The list containing only the filenames then has a blank line appended and is fed to DATE , which barfs it back - but with " Enter new date mm-dd-yy : " inserted at the front of the line.