du is used to estimate file space usage—space used under a particular directory or files on a file system. df is used to display the amount of available disk space for file systems on which the invoking user has appropriate read access.
What is the difference between du and df command in Linux?
df vs. du. … The (very complicated) answer can be best summarized like this: The df command provides a sweeping ballpark figure for how much space is being utilized on your filesystem as a whole. The du command is a much more accurate snapshot of a given directory or subdirectory.
Why does df show bigger disk usage than du?
What is most likely happening is that a process is running which is holding open a file which has been deleted. df thinks that the partition is full since the inodes are all taken up by that process. This often happens when a service such as samba has filled up the log file.
What is the use of df in Linux?
df command in Linux with Examples. The df command (short for disk free), is used to display information related to file systems about total space and available space. If no file name is given, it displays the space available on all currently mounted file systems.
What is du Linux?
The du command is a standard Linux/Unix command that allows a user to gain disk usage information quickly. It is best applied to specific directories and allows many variations for customizing the output to meet your needs. As with most commands, the user can take advantage of many options or flags.
What is du vs df?
du is used to estimate file space usage—space used under a particular directory or files on a file system. df is used to display the amount of available disk space for file systems on which the invoking user has appropriate read access.
What is PS EF command in Linux?
This command is used to find the PID (Process ID, Unique number of the process) of the process. Each process will have the unique number which is called as PID of the process.
Why are Ls and du different sizes?
The du command shows how much disk space is used for the given file. In contrast, the ls command shows the size of the file. The space used can be larger than the file size, depending on the filesystem used. So the used disk space was in this example 4 kilobytes, although the filesize is only one byte.
What does DF H mean in Linux?
However, Linux has a strong built-in utility called ‘df’. … Using ‘ -h ‘ parameter with (df -h) will show the file system disk space statistics in “human-readable” format, means it gives the details in bytes, megabytes, and gigabyte.
How do I see hidden disk space in Linux?
How to check drive space on Linux from the command line
- df – reports the amount of disk space used on a file system.
- du – reports the amount of space used by specific files.
- btrfs – reports the amount of space used by a btrfs file system mount point.
Why is df used?
Use the df command to show the amount of free disk space on each mounted disk. The usable disk space that is reported by df reflects only 90 percent of full capacity, as the reporting statistics allows for 10 percent above the total available space.
How do I list files in Linux?
See the following examples:
- To list all files in the current directory, type the following: ls -a This lists all files, including. dot (.) …
- To display detailed information, type the following: ls -l chap1 .profile. …
- To display detailed information about a directory, type the following: ls -d -l .
How do I use find in Linux?
The find command is used to search and locate the list of files and directories based on conditions you specify for files that match the arguments. find command can be used in a variety of conditions like you can find files by permissions, users, groups, file types, date, size, and other possible criteria.
How do I use Linux?
Linux Commands
- pwd — When you first open the terminal, you are in the home directory of your user. …
- ls — Use the “ls” command to know what files are in the directory you are in. …
- cd — Use the “cd” command to go to a directory. …
- mkdir & rmdir — Use the mkdir command when you need to create a folder or a directory.
What is the use of awk in Linux?
Awk is a utility that enables a programmer to write tiny but effective programs in the form of statements that define text patterns that are to be searched for in each line of a document and the action that is to be taken when a match is found within a line. Awk is mostly used for pattern scanning and processing.