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file: Guide to Identifying File Types
Determines the type and MIME information of files by examining their actual byte content instead of relying on extensions. It uses the libmagic database.
Mastering the find Command
This is a guide to the `find` command, which is used to search for files and directories within the file system in Linux. You can efficiently find the files you want by combining various conditions and actions.
getfacl: Check File Access Control Lists (ACLs)
The getfacl command is used to view the Access Control Lists (ACLs) set for files and directories. It allows for more granular permission settings than traditional Unix permissions (rwx) and is useful for managing individual access rights for specific users or groups.
gio: GIO Command-line Tool
gio is a command-line tool for performing file and directory operations through GLib's GIO (Gnome Input/Output) virtual file system. It supports various operations such as copying, moving, deleting files, checking information, mounting/unmounting, and is particularly useful in GNOME environments.
link: Create a hard link to a file
The `link` command is used to create a hard link to an existing file. A hard link shares the same inode as the original file, acting as another name that points to the same data within the file system. If the original file is deleted, the data remains accessible as long as a hard link to it exists.
ln: Create File Links (Symbolic Links)
The ln command is used to create links to files or directories within the file system. It is primarily used to create symbolic links (soft links) that allow access to the original file by a different name or path without changing the original file's location. It supports two types of links: hard links and symbolic links.
locate: Quickly Find File Locations
The `locate` command is a utility that quickly finds the location of files on your system. Unlike the `find` command, which scans the file system in real-time, `locate` uses a pre-generated database (`mlocate.db`) for searching, providing much faster results. This database is typically updated periodically via the `updatedb` command.
ls: List files and directories in detail (-l option focus)
ls is the most basic command in Linux for listing files and directories. The -l option, in particular, is essential for system administration and file analysis as it outputs detailed information such as file permissions, owner, group, size, and last modification time in a long format. This guide focuses on the usage of the -l option with the ls command.
ls-a: (ls -a) View Hidden Files
`ls-a` is not an independent Linux command. It generally refers to using the `ls` command with the `-a` option to list all files and directories, including hidden ones. This guide explains the correct usage and meaning of `ls -a`.
ls-h: Human-Readable File Size Display
ls-h is not a standard Linux command, but it is often used as a custom alias or script for conveniently using the 'ls -h' command. The primary purpose of this command is to display the sizes of files and directories in a human-readable format, such as KB, MB, GB.
ls-r: Recursively List Directory Contents (Custom Script)
ls-r is not a standard Linux command; it is typically used as a custom script or alias for the 'ls -R' command to simplify its usage. This guide assumes 'ls-r' is a custom script that, similar to 'ls -R', recursively lists files and directories in the current directory and all its subdirectories.
ls-t: (Non-standard) List files by time
ls-t is not a standard Linux command, but it is commonly used as an alias or custom script for the 'ls -t' command. 'ls -t' displays files and subdirectories in a directory, sorted by their last modification time.