JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III SCRIPTING LANGUAGES Previous Question Paper (March - 2021 - R16)

To search for files and directories in a Linux environment, the find command is the primary utility. The basic syntax is:

The procedure involves the following steps:

• Specify the starting directory (e.g., '.' for current, '/' for root).
• Define the search criteria using options such as -name (by filename), -type (f for file, d for directory), -size (by file size), or -user (by owner).
• Optionally, use logical operators like -o (OR) or -not to refine the search.
• Execute the command to traverse the directory tree recursively and return matches.

Example: To find all files named 'config.txt' in the /etc directory, use:

The Linux file system follows a hierarchical tree structure, starting from a single root directory denoted by a forward slash (/). Everything in Linux, including hardware devices, is treated as a file.

Key characteristics and standard directories include:

• /bin and /usr/bin: Contain essential user command binaries.
• /etc: Stores system-wide configuration files.
• /home: Contains personal directories for individual users.
• /root: The home directory for the superuser.
• /var: Holds variable data files, such as logs and spool files.
• /dev: Contains device files representing hardware components.
• /proc: A virtual file system providing information about processes and kernel parameters.

Linux supports various file system types (e.g., ext4, XFS, Btrfs) that manage data storage, access permissions, and metadata. The Virtual File System (VFS) layer allows the kernel to interact with these different physical file systems uniformly, providing a consistent interface for applications.