Ll file size

A directory in Linux is simply a file with the information about the memory location of all the files in it. The problem with this approach is that all the files with size less than 1 MB will also be displayed with file size 1 MB. The ls command also has -s option to display size.

You should combine with -h to show the file size in human readable form. You can also use the stat command in Linux to check the file size. Please enter at least 3 characters 0 results found. Abhishek Prakash. Quick tip to display file size in Linux using the ls command. Table of Contents. Improve this question. Paul Sheldrake Paul Sheldrake 7, 3 3 gold badges 11 11 silver badges 10 10 bronze badges. Add a comment.

Active Oldest Votes. Improve this answer. Would this be GNU ls? Standard ls has no such argument. With the xsi extension ls has the -s flag, which makes it report the number of blocks, but there is no standard flag --block-size. Tom As it says in the final paragraph of the answer, --block-size is a GNU extension. Show 14 more comments. Sergei Golubtsov 3 2 2 bronze badges. The length is the numeric value that follows the dave dave entries, which is two bytes.

Why is it two bytes when we only sent one character to the file? The right-hand portion of the output depicts these values as alphanumeric characters, wherever possible.

The hexadecimal value of 31 is used to represent the digit one. The Line Feed character is added by echo. By default, echo starts a new line after it displays the text it needs to write to the terminal window.

When du reports file sizes in blocks, the size it uses depends on several factors. You can specify which block size it should use on the command line. First, it checks the following environment variables:. If any of these exist, the block size is set, and du stops checking. If none are set, du defaults to a block size of 1, bytes. So, how do we find out which one is in use?

The file system block size is 4, bytes. If we divide that by the result we got from du four , it shows the du default block size is 1, bytes. We now know several important things. First, we know the smallest amount of file system real estate that can be devoted to storing a file is 4, bytes. This means even our tiny, two-byte file is taking up 4 KB of hard drive space. The tune2fs application reports true file system block sizes, while ls and du can be configured or forced to use other block sizes.

Finally, other than using different block sizes, the answers from du and tune2fs convey the same meaning. The tune2fs result was one block of 4, bytes, and the du result was four blocks of 1, bytes.

With no command line parameters or options, du lists the total disk space the current directory and all subdirectories are using. The size is reported in the default block size of 1, bytes per block.

The entire subdirectory tree is traversed. If you want du to report on a different directory than the current one, you can pass the path to the directory on the command line:.

If you want du to report on a specific file, pass the path to that file on the command line. However, specifying the block size in Megabytes is unreliable because ls will show 1M for files below 1MB. Similarly, this will show the smallest size as 1G. That is all for this one. In this tutorial, we quickly went over the basics of listing files and directories using the ls command and showing the file size in a human-readable format.

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