Use CON to Enter Data to File

Q

How to use CON file name to enter data to a file quickly? I don't want to use any editors.

✍: FYIcenter.com

A

Since CON is a special file name referring to the console including keyboard, you can use it with the "copy" command to enter data to a file.

For example, if you want to create small batch file called "random.bat" with one line of command, you can try the following:

C:\fyicenter>copy con random.bat
@echo %random%
^Z
        1 file(s) copied.

Note that Ctrl-Z was pressed to terminate the input from keyboard.

Now you can the "random.bat" batch file to generate random numbers:

C:\fyicenter>random.bat
11799

C:\fyicenter>random
4390

C:\fyicenter>random
31390

⇒ Use CON to Display Data on Screen

⇐ Use NUL to Sink Program Output

⇑ File Name and File Path

⇑⇑ Windows Batch File Tutorials

2021-04-02, 2660🔥, 0💬

File Name with Relative Path or Absolute Path
Should I provide file name with Relative Path or Absolute Path? When provide a file name, you have choice of using relative path or absolute path: 1. If you provide a file name with an absolute path, the system will go to the directory of the given path to locate the file. Providing an absolute path... 2022-08-30, 2624🔥, 1💬

💬 2022-08-30 Jimmy: All this info, all in one place has been perfect, accurate, jargon free and it's enjoyable! Cheers - just wish I found you soone...

Using Batch Commands
Where to find introduction information on Using Commands Designed for Batch Files? Here is a collection of tutorials compiled by FYIcenter.com team to provide introduction information on Using Commands Designed for Batch Files. List Batch Commands "call" - Run Another Batch File "call command" vs. "... 2021-03-21, 2443🔥, 0💬

"call command" vs. "command"
What is the difference between "call command" and "command" in a batch file? There are two formats to run another batch file (or any command) in a batch file: 1. "command" - Run the batch file (or any command) directly. The given command will be invoked in the current batch execution context. 2. "ca... 2021-04-02, 2334🔥, 0💬

Use CON to Display Data on Screen
How to use CON file name to display data on the screen? Since CON is a special file name referring to the console including screen, you can use it display data on the screen. You can use the "copy * con" to act like the "type *" command: C:\fyicenter>copy random.bat con @echo %random% 1 file(... 2021-04-02, 2101🔥, 0💬

"call" - Run Another Batch File
What is the "call" batch command for? The "call" command is for running another batch file, command or program. Below is the "call" command syntax: call command parameters When the "call" command is executed, a child batch execution context will be created to run the given command with given paramet... 2021-04-02, 2097🔥, 0💬

Use NUL to Sink Program Output
How to use the NUL file name to sink program output? If a program is writing too much out on your screen, you sink all output to the NUL file name. For example, if you run JMeter program, it will write some output on your screen: C:\>\fyicenter\jmeter\b in\jmeter> nul =================... 2021-04-15, 2032🔥, 0💬

List Batch Commands
What are build-in commands designed to be used in batch files? Here is a list of built-in commands designed to be used in batch files: Call - Calls and runs another batch file or program. When the other batch file or program ends, continue to run this this batch file. Echo - Displays messages, or tu... 2021-03-21, 2022🔥, 0💬

Special File Names Used by Windows
What are special file names used by Windows? Windows used a number of special file names referring to special resources in the system: CON - Referring to the console: keyboard and screen. Reading from CON is reading from the keyboard. Writing to CON is writing to the screen. PRN - Referring to the p... 2021-04-15, 1977🔥, 0💬

Wildcard Character In File Names
What are wildcard characters in file names? wildcard characters in file names are special characters that Windows will them as match patterns to search for files. If any matches found, the given file name will be replaced with matched file names. Many Windows commands support two wildcard characters... 2021-04-15, 1936🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.