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How to Use Bash to Write to a File?

Here you will find out:

  • how to use bash to write to a file
  • how to write to a file with right angle bracket sign and double right angle sign
  • how to use a tee command and sudo
  • when DiskInternals can help you

Are you ready? Let's read!

Why should you use bash to write to a file?

Most users of the bash shell use it to output a command to the terminal. However, if necessary, any command can be output to the log file. This makes it possible to use the output as a text file and view its contents if necessary. Of course, for such purposes appropriate permission and administrator rights are required.

How to write to a file with the right angle bracket sign (>)

This sign translates the output into a log file. When the file with the specified name does not exist, it creates a new file with the same name. If there is such a file, then the file will be overwritten.

How to write to a bash file with the double right angle sign (>>)

This sign has the same meaning as (>), but the output is added to the existing file, rather than overwriting it. Naturally, if there is no such file, a new one will be created.

Most often, the echo and printf commands are used to output to the log file, although you can use any other command.

Here is an example of the echo command:

Using the tee command

This command, just like (>) and (>>), outputs to a file, but has a significant advantage over them:

  • tee allows you to add output to several files at the same time;
  • it allows you to write files belonging not only to the administrator, but also to other users, along with sudo

Usually, the default is to overwrite the specified file.

-a (--append) is a function that allows you to add output to the log file.

For example:

You can redirect to /dev/null if you do not want to write to standard output.


Append text to a file with sudo

Adding sudo to the command will be appropriate if you are not the administrator of these entries and do not have sufficient rights.

This way, the data will be written to the file.

There is another option for these purposes:

Here, -c gives the right run a command using sudo.

Is it possible to open Linux files in Windows?

If you own DiskInternals Linux Reader, then there will be no problems with this. This application is specially designed for owners of a virtual machine or dual-boot setup who need to get files from Linux to Windows. In this application, you can read documents, photos, pictures, and other files from all types of hard drives, including HDDs, SSDs, flash drives, SD cards, memory cards, and other portable information storage devices. It also has access to any files on the Linux system, bypassing security policies. Free viewing of found files to determine the quality of the application is also available at no cost. And of course, the most popular function of creating a disk image is available right now for free!

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