I know this is a damn old question, but as the OP is about scripting, and for the fact that google brought me here, opening file descriptors for reading and writing at the same time should also be mentioned. #!/bin/bash # Open file descriptor (fd) 3 for read/write on a text file. Exec 3 poem.txt # Let's print some text to fd 3 echo 'Roses are red' &3 echo 'Violets are blue' &3 echo 'Poems are cute' &3 echo 'And so are you' &3 # Close fd 3 exec 3&- Then cat the file on terminal $ cat poem.txt Roses are red Violets are blue Poems are cute And so are you This example causes file poem.txt to be open for reading and writing on file descriptor 3. It also shows that.nix boxes know more fd's then just stdin, stdout and stderr (fd 0,1,2). It actually holds a lot. Usually the max number of file descriptors the kernel can allocate can be found in /proc/sys/file-max or /proc/sys/fs/file-max but using any fd above 9 is dangerous as it could conflict with fd's used by the shell internally. So don't bother and only use fd's 0-9.

If you need more the 9 file descriptors in a bash script you should use a different language anyways:) Anyhow, fd's can be used in a lot of interesting ways.

Rename Multiple Files in Windows Explorer Windows Explorer (known as File Explorer in Windows 10) is surprisingly powerful. You probably know how to rename a single file, but let’s start with the basics, since the advanced tricks build off them. If you’re using your mouse, you have no less than three ways to select a file’s name and rename it. You can:. Click to select the file and then click the “Rename” button on the Home menu.

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Click to select file and then click the name of the selected file. Right-click the file and then select “Rename” on the context menu. And if you prefer sticking with your keyboard, you can just use your arrow keys (or start typing the file name) to select a file and then hit F2 to select the file name.

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Once you’ve got the file name selected—and you’ll notice only the file name itself is selected, not the extension—you can type a new file name. When you’re done typing the file name, you can press Enter (or just click somewhere else) to save the new name. Here’s where things get interesting: you can also hit the Tab key to automatically select the next file name in the folder so that you can immediately begin typing a new name for it.

Keep hitting Tab and typing names this way and you can easily rename all the files in a folder if you’re so inclined.