Linux File System
Red Hat Linux has a hierarchical file system. The top-most directory—known as the root directory—of the file system contains several other directories, sometimes called sub-directories. Basic File system Hierarchy Standard (FHS) Directories.
/
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The root directory, the top-level directory in the FHS. All other directories are sub-directories of root, which is always mounted on some partition.
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/bin
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Contains binary executable files used by user, administrator, and operating system.
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/boot
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Contains file required for booting the system
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/dev
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Contains files associated with the devices attached to the system
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/etc
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Contains configuration files of the application in the system.
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/lib
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Contains library files required by the executable files stored in /bin directory.
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/media
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Contains mount point for the removable media attached to the system
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/mnt
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Contains mount points for mounted file system.
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/opt
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Contains third party software application.
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/proc
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Contains files that represent the current state of kernel.
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/sbin
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contains binary executable files used for system booting and recovery operation and not accessed by regular user.
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/srv
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Contains data files used by services, such as WWW and FTP
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/sys
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Contains files that represent the state of the kernel.
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/usr
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Contains user related files, program, and documentation.
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/var
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Contains log files, error messages, cache data and other files.
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/tmp
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Contains temporary files created by application, which are deleted at system reboot.
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/home
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Each user on the system has a home directory. It is the location where the user arrives first logging in to the system.
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