1. Generate SSH Keys method? ssh-keygen -t rsa
2. docker Quick Start Tutorial http://www.ruanyifeng.com/blog/2018/02/docker-tutorial.html
3. mov transfer data format?
mov [0],ax
mov [0], al
Are legal, how many one-time data transfer, depending on the type register. ax is sixteen, the equivalent of a written word (word), al is eight, corresponding to a byte write (byte).
4. The method of writing back, under normal circumstances, if the result of the write parameter res, the method of returning void
5. Java determining whether a method of string str is the empty string
The offset value is 0000H, and is 00CDH
7. The [address] indicates an offset address of the memory cell address
Each row of 16 bytes, not to 0010 as a 2, here is the hex! Therefore each address in memory storing a byte of data.
8. mov ax, 11326 this statement inside 11326 decimal, hexadecimal and then converted into the required understanding is correct, can not be understood as a five-digit hexadecimal.
9. Linux file directory meaning
(1) / bin is an acronym for binary, storage linked executable file or executable file (similar shortcuts), common cat, cp commands are on the inside.
And / bin Similarly / sbin directory, abbreviated System Binary, the command stored in the system configuration here can operate. Ordinary users may be able to use the command here to view certain system state, but if you want to change the configuration, you need the authorization or switch to sudo super user.
(2) / boot file system is stored in the boot, which has grub (GNU GRUB and GRUB is an abbreviation GRand Unified Bootloader, which is a multi- operating system boot manager. Guidance for different systems, such as Windows, Linux.).
(3) / dev is an abbreviation device, and store all device files (Linux which all things are exist in document form).
(4) / etc directory is often used to store configuration information for many programs, such as package management tool apt.
(5) / home is an ordinary home directory, there are downloads, music, videos and so on.
(6) / lib is an abbreviation library, including executable files dependent bin.
(7) / media inside automatic loading device, such as U disk, mobile hard disk, a network device.
(8) / mnt mount associated with the device, is generally empty folder, not commonly used.
(9) / opt is the abbreviation for option, the software can be installed here, the use of more casual.
(10) / proc is an abbreviation for the process, is stored in a state where all the programs that are running information. (Not shown figure above)
(11) / root super-user's home directory.
(12) / srv is an acronym for service, storage service data. Linux desktop is empty, the server version of linux stored in the Web services and FTP services related resources.
(13) / tmp is an abbreviation of temporary, temporary file storage program, these temporary files can play a role in the loss of data file recovery time.
(14) / usr is the abbreviation for Universal System Resource, where the system is stored in non-essential resources, such as a user-installed applications.
(15) / var is an abbreviation variable, mainly to store some logs (log) files.