df (abbreviation for disk free) is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. df is typically implemented using the statfs or statvfs system calls.
What is df command do?
Use the df command to display information about total space and available space on a file system. … If a file or directory is specified, then the df command displays information for the file system on which it resides. Normally, the df command uses free counts contained in the superblock.
How does df work Linux?
The df command is used to show the amount of disk space that is free on file systems. In the examples, df is first called with no arguments. This default action is to display used and free file space in blocks. In this particular case, th block size is 1024 bytes as is indicated in the output.
What is df with example?
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 does df mean?
Disease Free” or “Drug Free. On online dating sites, such as Craigslist, Tinder, Zoosk and Match.com, DF usually means “Disease Free” or “Drug Free.”
How is df so fast?
4 Answers. df just tells you the total free space on a filesystem. The filesystem can know this instantly, by simple bookkeeping. du on the other hand actually traverses a directory and calculates the total size of its contents.
What are inodes in Linux?
The inode (index node) is a data structure in a Unix-style file system that describes a file-system object such as a file or a directory. Each inode stores the attributes and disk block locations of the object’s data.
What is the difference between df and du?
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.
Which command is used to check shell?
Use the following Linux or Unix commands: ps -p $$ – Display your current shell name reliably. echo “$SHELL” – Print the shell for the current user but not necessarily the shell that is running at the movement.