Linux directory Structure 1

Linux directory structure

1.tree L 1/: structure of the display /

2./usr/bin: Application

3./etc/: configuration file

4./ETC/INIT.D Startup file

5./ Storage System Program

6./USR: Store User's program

7./home: home directory for ordinary users

8.uname-a ( print all information )-R ( kernel info )-M(view number of digits 64 or )

9./dev: device files directory, such as sound card, optical drive, disk

/dev/null: is a black hole that puts a black hole in any file that can be read clearly any file

Cat/dev/null>/oldboy/test.txt emptying Files

10./ETC/MOTD Add echo "Welcome" >/ETC/MOTD every time you log in, you'll be prompted.

11./lib library file that plays a connecting link between the kernel and the application

12./mnt Temporary mount point, temporary file System entry

use fdisk-l to see what hangs in the case

13./opt Optional, some enterprises will use it as the installation directory

14./proc demo kernel and process virtual files cat/proc/cpuinfo

15.grep proc/etc/fstab View proc boot is mounted on the CD-ROM

/sbin: The command that holds the root user

16.halt: shutdown reboot: restart shutdown-r now reboot

Shutdown-h now immediately shuts down the machine

17./TMP: Temp directory

18./USR: Directory of system repositories Unix software resource

19./usr/local/sbin: You can Create the command again sbin

VI Testoldboy

Echo Oldboy

: Wq

Testoldboy can be used under any path

20/var:cat/var/log/message System log files

Cat/var/log/secure system security Log

NIC configuration file Cat/etc/sysconfig/network-scripts/ifcfg-etho

Network card boot:,etc/init.d/network restart

off / restart ifdown etho ifup etho

/etc/resolve/ve.conf is responsible for parsing files

the corresponding client configuration such as 8.8.8.8

suggested changes DNS is changed in setup .

/etc/hosts: DNS equivalent to LAN

/etc/fstab: record a file on the file system to be mounted for booting

/etc/rc.local: The file that holds the Boot program command

RPM and yum installed programs to start the server

/etc/initab: Boot file

/ETC/INIT.D system service Command

/etc/profile: path to global variable configuration

/ETC/PROFILE.D command or file exists independently, can also room program

/etc/issue Record version information, security optimization

/ETC/MOTD: System Login Reminder

/etc/sudoers:sudo configuration file

/etc/syslog.conf: Log configuration file

/ast: login information (user)

/var/spool/cron/root: The path of a timed task

/var/spool/clientmqueue:sendmail file directory for temporary mail

/proc:cat/proc/verson ( tuning file )

/proc/loading Load Information

Linux directory Structure 1