View source for File placement and search

== Filesystem Hierarchy Standard (FHS)==
The Filesystem Hierarchy Standard (FHS) defines the directory structure and directory contents in Linux and other Unix-like operating systems. Here's an overview of important file locations, directory purposes, and commands for file placement and search:

*/bin: Essential command binaries for all users
*/boot: Boot loader files and kernels
*/etc: Host-specific system configuration files
*/home: User home directories
*/lib: Essential shared libraries and kernel modules
*/media: Mount points for removable media
*/mnt: Temporary mount points for filesystems
*/opt: Optional application software packages
*/root: Home directory for the root user
*/sbin: System binaries (system administration commands)
*/tmp: Temporary files
*/usr: Secondary hierarchy for read-only user data
*/var: Variable data files (logs, spool files, temporary e-mail files)

== find: Search for files in a directory hierarchy ==
Examples:
*find /home -name "*.txt": Find all .txt files in /home
*find / -type d -name "log": Find directories named "log"
*find /var -size +10M: Find files larger than 10MB in /var

==locate: Find files by name, using a previously built database==
Examples:
*locate filename.txt: Find all instances of filename.txt
*locate -i "*.conf": Case-insensitive search for .conf files

==updatedb: Update the file name database used by locate==
Example:
*sudo updatedb: Update the database (typically run daily via cron)

== /etc/updatedb.conf: Configuration file for updatedb ==
Example content:
*PRUNEPATHS="/tmp /var/spool /media"

== type: Display information about command type ==
Examples:
*type ls: Show the type of the ls command
*type -a python: Show all locations of the python command

==whereis: Locate the binary, source, and manual page files for a command ==
Example:
*whereis gcc: Find locations of gcc binary, source, and man pages

==which: Locate a command's executable==
Example:
*which python3: Show the path of the python3 executable