Modify the value that you would like to change using the arrow keys on your keyboard.Type “/” and then the name of the value you would like to edit and press Enter to search for the value in the file.Open the file in vim with the command “vim”.Optionally, press and type Shift + Z Z to save and exit the file. To save the file and exit at the same time, you can use the ESC and key and hit. You can change the name of the file to anything you want. Creating a text file this way opens your default text editor with a blank text file on your desktop. Once you have modified a file, press shift to the command mode and press :w and hit as shown below. Another way to create a text file is to right-click an empty area on the desktop, and in the pop-up menu, select New, and then select Text Document. Force exit from vi even though changes haven’t been saved – :q! How do I save and edit a file in Linux? To quit vi, type one of the following commands in the command mode and press ‘Enter’. To open a file in the vi editor to start editing, simply type in ‘vi ’ in the command prompt. What is command line editing? How do I edit a file in Unix?.How do you enter data into a file in Linux?.What is the command to rename a file in Linux?.How do I open a file in Linux command line?.How do I edit a file in Linux command line?.How do I save and edit a file in Linux?.Next example will create a text file named test.txt, put some words inside and save the file on Cisco device flash. I think that this is the only way of changing text files from Cisco console, correct me in the comments if you know of something else. I used Cisco IOS Tcl shell which is available on Cisco devices to allow running Tcl scripts and commands directly from the Cisco IOS CLI prompt. It was faster to just create the file directly on the router flash and not creating it on my laptop and then transferring it with FTP or TFTP. I was using if for my next article lab where I needed a file on the flash with at least 1600 bytes so I can pull it from neighbouring router with HTTP and check some details in new TCP connection. If you need it for whatever reason, maybe to change something in the config file or something else, this is the way to do it.

With this trick, you can write or edit a file from Flash memory directly from Cisco IOS console.

There is always the option to edit a file locally on your computer in notepad++ and then upload it to Cisco device.

Create and edit text file in terminal