FHS standard directory structure

Tree
command / bin binary files stored Ordinary users can use the
/ sbin command only the root user can use
/ root root user's home directory
parent directory / home general user's home directory
/ dev device storage device file directory
/ etc store configuration files .cfg .cf .conf
/ proc virtual file system to store all the processes (pid), mapping the current state of the kernel
cat / proc / meminfo to view memory information
cat / proc / cpuinfo View cpu info
/ sys virtual file system
/ media graphics mount directory
/ misc directory for mount the autofs
/ mnt manually mount the directory
/ lib 32 bit library file
/ lib64 64-bit library file
/ usr installed as the default directory / usr / local
/ var some of that change frequently ftp / var / ftp / pub personal publishing site mailbox logs
/ opt third-party software installation directory
/ tmp to store temporary files