4. Basic Redis commands-list, basic redis-list1. The list type is implemented using a double linked list. Therefore, if you want to add elements to both ends, the time complexity is O (1 ), the faster the element gets closer to the two ends. However, the cost is that accessing elements through indexes is slow.2. the ma
, respectively, from the left pop-up, from the right pop-up, the return value is a pop-up value. (pop-up means to remove the value and return the value)
127.0.0.1:6379> lrange mylist 0-1
1) "-2"
2) "-1"
3 "" 0 "
4)" 1 "
127.0.0.1:6379> Lpop MyList
"-2"
127.0.0.1:6379> rpop mylist
"1"
127.0.0.1:6379> lrange mylist
-0-1 1) "-1"
2) "0"
Combined with the above four commands, you can implement stacks and queues.
Stacks: lpush and lpop or usin
1. show command:Display RMAN configuration: RMAN> show all;
2. Report command:2.1. RMAN> report schema the physical structure of the target database;2.2. RMAN> report need backup days = 3; report data files not backed up in the last three days;2.3. RMAN> report need backup days 3 tablespace users; data files not backed up in the users tablespace for three days;2.4. RMAN> report need backup incremental 3. report the number of incremental backups required for data file recovery more than three ti
; Rpop Key
Here is a good understanding, respectively, from the left pop-up, from the right pop-up, the return value is a pop-up value. (pop-up means to remove the value and return the value)
Combined with the above four commands, you can implement stacks and queues.
Stacks: Lpush and Lpop or using Rpush and Rpop.
Queues: Lpush and Rpop or using Rpush and Lpop.
3, get the number of elements in the list
Document directory
Common commands
Less common commands
Abor
Acct *
Allo
Appe
Cdup
CWD
Dele
Help
List
MDTM
MKD
Mode
NLST
Noop
Pass
PASV
Port
PWD
Quit
Rein *
Rest
RETR
RMD
RNFR
RNTO
Site *
Size
Stat
Stor
STOU
Stru
Syst
Type
User
Note that commands marked with a * are not implement
Git is used every day, but a lot of commands can't remember.In general, the daily use of just remember 6 commands, you can. But skilled use, I am afraid to remember 60~100 a command.Here's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
List the ten most commonly used Linux commands-general Linux technology-Linux technology and application information. For more information, see the following. Currently, Linux is inseparable from commands, so we still need to learn a little bit about English. In Linux, there may be 50 or 60 commonly used commands, such
In Python, [] represents a list. The list has various operations commands.1, append () method, add an element to the tail of the list.Note the append () method differs from the Extend () method: List.append (object) Adds an object to the list objects and list.extend (sequence) adds the contents of a sequence SEQ to the
Tags: DNA style nbu ISP column Ogre CCache length statDBCC Commands or Database consistency Checker Commands has been with SQL Server from the its early ages itself.The article we would list the available DBCC commands listed using the DBCC HELP command. Many in this list is
List of common Git commandsHere's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
Index/stage: Staging Area
Repository: Warehouse area (or local warehouse)
Remote: Repository
First, create a new code base
# 在当前目录新建一个Git代码库$ git init# 新建一个目录,将其初始化为Gi
Wen/NanyiI use Git every day, but I can't remember many commands.In general, the daily use of just remember 6 commands, you can. But skilled use, I am afraid to remember 60~100 a command.Here's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
Index/stage: Staging Area
Repository: W
I use Git every day, but I can't remember many commands.In general, the daily use of just remember 6 commands, you can. But skilled use, I am afraid to remember 60~100 a command.Here's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
Index/stage: Staging Area
Repository: Warehouse
/gravity /center ">Found two commands together, namely student and where are connected together. So when you use the a command to add a command to the buffer to hit two return, the first carriage return is a command must take the carriage return, the second carriage return is added as the beginning of the new code to the buffer, for example:Q: Suppose the buffer has 3 rows of SQL commands, you need to join
In Win7, you cannot view the file list using the dir or ls commands of ftp. In this case, you cannot view the file list using the dir or ls commands of ftp in command line mode of Win7, you cannot view the file list using the dir or ls c
List of configuration commands involved in the samba service configuration file [reprinted]
--------------------------------------------------------------------------------
Coding System = #Client code page = 936 # Set the character set used by Samba (default: 850,936 is simplified Chinese)Code page Directory =/usr/share/samba/codepages #Workgroup = ccgd. com # Set the samba workgroup;NetBIOS name = ccgd.
), and then
C-c C-c is M-x comment-region
The cancellation is like this:
M-x recomment-region
Added on 08.05.14
Emacs Bookmark-related commands
Ctrl x R m: creating bookmarks
CTRL x R L: Open Bookmark list
CTRL x R B: Jump to the location specified by the bookmark
M-x bookmark-write: Write a bookmark to a specific file
M-x bookmark-load: Loading bookmarks from specified file
-----------
What is lisp and
Three basic concepts
The workspace (Workspace) is the root directory of the items in your computer
Registers (Index) like a cache area, temporarily save your changes
The version library (Repository) is divided into local warehouses (locals) and remote warehouses (sqlremote)
Almost all of the commonly used commands are based on these concepts, a picture of victory, the following is a relatively simple diagram, including the most basic command
Source: Nanyi's Blog
Website: http://www.ruanyifeng.com/blog/2015/12/git-cheat-sheet.html
I use Git every day, but I can't remember many commands.In general, the daily use of just remember 6 commands, you can. But skilled use, I am afraid to remember 60~100 a command.Here's a list of common Git commands I've compiled. Several special nouns are translated
NanyiDate: December 9, 2015I use Git every day, but I can't remember many commands.In general, the daily use of just remember 6 commands, you can. But skilled use, I am afraid to remember 60~100 a command.Here's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
Index/stage: Stagi
Here's a list of common Git commands I've compiled. Several special nouns are translated as follows.
Workspace: Work Area
Index/stage: Staging Area
Repository: Warehouse area (or local warehouse)
Remote: Repository
First, create a new code base
# 在当前目录新建一个Git代码库$ git init# 新建一个目录,将其初始化为Git代码库$ git init [project-name]# 下载一个项目和它的整个代码历史$ git clone [url]
Sec
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