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How can I see the size of files and directories in Linux? If use df -m, then it shows the size of all the directory at the top level, but, for the directories and files inside the directory, how do I check the size?
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To view the file size of a directory pass the -s option to the du command followed by the folder. This will print a grand total size for the folder to standard output. Along with the -h option a human readable format is possible.
To get the total size of a directory in Linux, you can use the du (disk-usage) command.
Using the ls Command–l – displays a list of files and directories in long format and shows the sizes in bytes.
Right-click the file and click Properties. The image below shows that you can determine the size of the file or files you have highlighted from in the file properties window. In this example, the chrome. jpg file is 18.5 KB (19,032 bytes), and that the size on disk is 20.0 KB (20,480 bytes).
Use ls command for files and du command for directories.
Checking File Sizes
ls -l filename #Displays Size of the specified file ls -l * #Displays Size of All the files in the current directory ls -al * #Displays Size of All the files including hidden files in the current directory ls -al dir/ #Displays Size of All the files including hidden files in the 'dir' directory ls command will not list the actual size of directories(why?). Therefore, we use du for this purpose.
Checking Directory sizes
du -sh directory_name #Gives you the summarized(-s) size of the directory in human readable(-h) format du -bsh * #Gives you the apparent(-b) summarized(-s) size of all the files and directories in the current directory in human readable(-h) format Including -h option in any of the above commands (for Ex: ls -lh * or du -sh) will give you size in human readable format (kb, mb,gb, ...)
For more information see man ls and man du
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