(action) (such as a file, a directory, or a paragraph of text)Example: Ls–a/ 2.whoami commands (see Linux System Management P24)1) Understand the function of the WhoAmI command: Lists the user name (account number) used to log on to the Linux system. 3.who commands (see Linux System Management P25)1) Mastering the functions of the WHO command: Lists which users are currently working on the system.2) Maste
Tags: last size class who system displays time master failure
14.1 W: Detailed query for users who are logged on to the current computer
14.2 Who: Display simple information for users who are logged on to the current computer
14.3 WhoAmI: Displays the user name associated with the current valid ID
14.4 LogName: Displays the login name of the current user
14.5 Users: Displays the currently logged-on user with a separate line
Unalias
To cancel the definition of an alias
Unalias del
Other commands
command name
function Description
Examples of Use
Uname
Displays information about the operating system
Uname-a
Clear
Clear screen or window contents
Clear
Env
Show all currently set environment variables
Env
W.H.O.
List all users who are currently logged on
complex functions, annotations are required after the branch statement and loop statement are completed to distinguish the branches or loop bodies // end "for (condition )"
Use assert macro for function entry check assert (NULL! = P );
An error may occur when the recursion depth is too large (for example, Stack Overflow)
The return statement cannot return a "Pointer" pointing to "stack memory" because the function body is automatically destroyed when it ends.
File
File Name: abbreviated Mo
BackTrack, the default value is in the 'Home' directory. As shown in the figure above, the 'Home' directory is at the lower level of the 'root' directory. You can enter a command to confirm the current location:
Pwd is the abbreviation of 'present working directory'. You can see that it returns 'root ', this means that we are in the root user directory (do not confuse this 'root' with the file system '/'. This is the root user directory ).
Pwd is a convenient command that allows us to know wh
information before each row in the output, and the time is accurate to microseconds.
-Ttt adds time information before each line in the output, and the output is relative time.
-S specifies the length of the output string for each row (default value: 32)
Example of strace:Strace-t whoami # trace the executable program of whoami and print the execution time before the output result of each row
Strace-p 171
encapsulate the system, generate a new SID, you can use "Whoami/user" in Windows Server 2003 to view the SID of the system(1) Shut down the system and re-mount the system installation disk CD1/usr/libexec/qemu-kvm-m 1024-drive file=windows32.img -cdromcn_win_srv_2003_r2_enterprise_with_sp2_vl_ Cd1.iso-net nic,model=virtio-netuser-boot Order=c-usbdevice Tablet-nographic-vnc:3(2) After you start the system, go to the Deploy.cab folder in the Support/t
each file to avoid confusion.
Sub-namespace
PHP allows you to define a hierarchical namespace so that the database can be subdivided. The sub-namespace is separated by a backslash character (), for example:
◆ MyProjectSubName
◆ MyProjectDatabaseMySQL
◆ CompanyNameMyProjectLibraryCommonWidget1
Call the namespace code
In the lib1.php file, we use the AppLib1 namespace to define a constant, a function, and a class, such:
Lib1.php
?php
//applicationlibrary1
namespaceAppLib1;
constM
','__format__','__getattribute__','__hash__','__init__','__module__','__new__','__reduce__','__reduce_ex__','__repr__','__setattr__','__sizeof__','__str__','__subclasshook__','__weakref__','Gender','name','score','WhoAmI']For instance variables,dir () returns all instance properties, including those with a special meaning such as '__class__'. Notice that the method 'WhoAmI' is also an attribute of s .How do
_ init _ () method is special, but in terms of concept, it works in the same way for any other classes. The. _ init _ () method enables you to configure the created object; the. _ new _ () method enables you to customize its allocation. Of course, the latter is not widely used, but this method exists for classes of every Python 2.2 new Style (typically inherited rather than overwritten.
Pay attention to a feature of type descendant; it often makes people who use the meta class for the first tim
following three commands in sequence. Note that 5.5.20 is the mysql version you have installed in articles 1 and 3. You need to modify the version according to the actual situation. You can use ls/usr/local/Cellar/mysql/to check which version you have installed. The whoami in the next day also needs to be changed to the user name, which can be obtained through instructions whoami.
# Setup daemonMkdir-p ~ /
1. Windows Query host name and SID:Windows host name query: WhoAmI;Host SID query: Whoami/all;2. Tested: Bare Metal recovery considerations with Windows Server Backup tool:A. Only the contents and system status of the C drive can be restored;B.WSB the system SID after bare-metal recovery is the same as the previous system SID;C. The computer hardware configuration and the previous computer hardware configur
A man's martial arts: the idea of Intranet penetration testing (2)
Web penetration (previous article)Http://www.bkjia.com/Article/201412/357403.htmlDifferent, Intranet penetration requires more randomness and breakthrough, and the situation is more complicated. When encountering obstacles, sometimes you can use different ideas to break through. In many cases, you can only stop here. Here are some of my summary of Intranet penetration experience. Mainly in windows.
0 × 01 dipper
(When obtaining
%s'% Self.nameYou can first get the type of the variable with the type () function, which returns a type object:>>> type (123)'int'>>>> s = Student ('Bob ' ' Male ', ()>>> type (s)class'__main__. Student'>Second, you can use the Dir () function to get all the properties of a variable:>>> dir (123)#integers also have many properties ...['__abs__','__add__','__and__','__class__','__cmp__', ...]>>>dir (s) ['__class__','__delattr__','__dict__','__doc__','__format__','__getattribute__','__hash__','__
namespace. However, if you are using PHP 5.3 or later, I recommend using namespaces, even if you only use the same name in the project.
Using namespace and use as namespace operators seems logical. Some developers may disagree, but it is not important to name them in this case. Finally, return to the question of backslash. Most critics are ugly, hard to read, and hard to input on Mac. Even so, I still think it is better than the two colons I have proposed. For example, the following static meth
Character type:Sql> Select Dump (' Whoami ') from dual;DUMP (' WHOAMI ')-----------------------------------Typ=96 len=6:87,104,111,97,109,105 this is getting longer.Sql> Select Name,dump (name) from Cha;Name DUMP (name)--------------------------------------------------------------------------------Fun typ=96 len=10:102,117,110,32,32,32,32,32,32,32 The back of these 32 is for filling.Sql> Select Dump ( -9876
interface only applies to the information of the last line that gets the result of the command execution.#include #include #include #include int Super_system (const char * cmd, char *retmsg, int msg_len){FILE * FP;int res =-1;if (cmd = = NULL | | retmsg = NULL | | Msg_len {printf ("err:fuc:%s system Paramer invalid!\n", __func__);return 1;}if (fp = popen (cmd, "r")) = = = NULL){Perror ("Popen");printf ("err:fuc:%s popen Error:%s\n", __func__, Strerror (errno));return 2;}Else{memset (retmsg, 0,
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