How to Check File Size in Linux Using ls, du, and stat Commands
This article explains three common Linux commands—ls, du, and stat—for checking file sizes, showing the exact syntax, example usage with a sample file, and how each command displays size information, including human‑readable formats.
In Linux you can use several commands to view file size. Below are three commonly used commands.
1. Using ls command
The ls command lists files and directories. To see file size, use the -l option. Example: ls -l filename Replace filename with the target file. For example: ls -l example.txt This displays detailed information including size in bytes.
2. Using du command
The du command estimates directory size; with -h it shows human‑readable sizes for a single file. Example: du -h filename Replace filename with the target file. For example: du -h example.txt This outputs the size in KB, MB, GB, etc.
3. Using stat command
The stat command displays detailed status information, including file size. Example: stat filename Replace filename with the target file. For example: stat example.txt This shows file size in bytes along with other metadata.
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