/dev--Contains device drivers
/bin and /usr/bin--Contains standard Linux commands
/lib and /usr/lib--Contains standard Linux libraries
/var--Contains configuration and log files
/etc--Contains default configuration files
/usr/local/bin--Contains commands not a part of the distribution, added by
your administrator
/opt--Contains commercial software
/tmp--Stores temporary files
/sbin and /usr/sbin--Contains system administration commands (/sbin stands
for “safe” bin)
…
