Generally, you will find that the user name has been displayed at the console command prompt. However, some shells do not display your username by default, such as csh. Therefore, this command should be used on shell terminals that cannot display the user name back.How to run whoami
To run this command, you only need to enter whoami. In the following example, we use the csh shell terminal.
%
WhoAmI
Function Description:
Show user Name
Grammar:
WhoAmI
Supplementary Note:
Display the user name of oneself, this instruction is equivalent to execute id-un instruction
The difference between WhoAmI and who am I
The WHO command focuses on viewing current users who are logged on to this machine
The role of WHO-M is the same as that of who am I
Who a
Differences between linux who am I and whoami
Who am I displays the actual user name, that is, the user ID when the user logs on. This command is equivalent to who-m.
Whoami displays the valid user ID, the user name of the current "Operation user.
In most cases, the actual user ID is the same as the valid user ID.
Who-q is used to display the number of currently logged-on users.
If you think the output
In Linux, the WHO series commands exist who/whoami/who am I.First of all, I have an ordinary user guixian001 system. Then execute the command whoami/who am i/who to execute the command separately. As follows:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/6C/B9/wKioL1VRZYrjh8jCAACd9ikK2sU994.jpg "title=" Qq20150512102223.jpg "alt=" Wkiol1vrzyrjh8jcaacd9ikk2su994.jpg "/>We then use the SU command
WhoAmIFunction Description:Show user NameGrammar:WhoAmIAdditional notes:Display its own user name, this directive is equivalent to executing the id-un instructionThe difference between WhoAmI and who am I The WHO command is focused on seeing which users are currently logged on to this machineThe role of who-m and the role of Who am I is the sameWho am I displays the actual user's username, which is the user ID when the user logs in. This command is eq
The WHO, W, and WhoAmI commands can display logged-in user names, but usage and usage effects vary, so let's look at the usage of these three commands and their differences.1. Who command: Displays user information that is currently logged into the system and does not display the user's login via the SU command:[email protected] ~]# whoRoot Tty1 2015-08-19 16:23Root pts/0 2015-08-27 01:08 (192.168.1.254)Root PTS/1 2015-08-27 02:57 (192.168.1.254)2, W
Command function: Display information of logged-in userCommand format:Common options:Example:W shows the logged in user and the operation in progress[Email protected] ~]# W11:22:01 up 4 days, 21:22, 3 users, Load average:0.00, 0.00, 0.00USER TTY from [email protected] IDLE jcpu PCPURoot tty1-thu14 4days 0.19s 0.19s-bashRoot pts/0 172.31.3.32 Thu14 0.00s 0.73s 0.00s WRoot pts/1 172.31.3.32 11:18 1:50 0.07s 0.02s-bashWho shows the logged in username, terminal name, logon time, and login IP[email p
Several common small commands for viewing logged-in users:1, W : Displays the currently logged on user and what they are doing[Email protected] usr]# W10:02:06 up 2 days, 2:06, 1 user, Load average:0.00, 0.00, 0.00USER TTY from [email protected] IDLE jcpu PCPURoot pts/0 10.109.134.247 Mon09 0.00s 0.40s 0.15s W2, WhoAmI display the current login system valid user name[Email protected] usr]# WhoAmIRoot3. Who shows which users are currently logged inWho-
-Mask::rwxother::r--[Email protected] backup]# setfacl-x g:hive inittab[Email protected] backup]# Getfacl Inittab# File:inittab# Owner:root# Group:rootuser::rw-user:hadoop:rw-group::r--mask::rw-other::r--[Email protected] backup]#
WHOAMI: Displays the currently logged on user[Email protected] backup]# WhoAmIRoot[Email protected] backup]#Terminal (terminal, or physical terminal):is a device, not a program, typically a device that provides
First, let's take a look at the different results of the three commands entered by common users and root users:
The difference is that whoami displays the User Name of the current "Operation user", while who am I displays the User Name of the "Login User.
The Linux term is as follows: (actual user = uid, that is, user ID. Valid user = EUID, I .e. valid user ID)
Who am I displays the actual user name, that is, the user ID when the user logs on. Thi
***************************************************************************************'-H ''--heading 'Print a line of column headings.#这是个比较好的辅助命令 to improve readability of display results************************************************************************************IiSome other parameters1. Display dead processes and active processes'-d ''--dead 'Print information corresponding to dead processes.'-P ''--process 'List active processes spawned by Init.'-P ''--process 'List active processes
W who whoami last Lastb lastlog basename sleep hostname mail################################################W.H.O.WhoAmILast: Displays the/var/log/wtmp file, showing the user login history and System restart historyLastb:/var/log/btmp file that displays user error attempts to log onLastlog: Users who have never logged in################################################BaseName$: Script path and name when executing script################################
Display the user name. This command is equivalent to executing the "id-un" command.SyntaxWhoami [-- help] [-- version]Parameter description: -- Help online help. -- Version: displays the version information.InstanceShow user name# WhoamiRoot
JavaScript is executed in segments. The definition function statements in a piece of code are executed first, which seems to be a bit like the compilation concept of static language. Therefore, this feature is also called JavaScript pre-compilation. A function is an object, but a bracket is added to the ordinary object... SyntaxHighlighter. all ();
JavaScript is executed in segments. The definition function statements in a piece of code are executed first, which seems to be a bit like the compil
JavaScript is executed in segments. The definition function statements in a piece of code are executed first, which seems to be a bit like the compilation concept of static language. Therefore, this feature is also called "pre-compilation" of JavaScript ".A function is an object. It only adds a bracket () operator to an object. This operator is used to execute the function logic.Call method exampleFunction WhoAmI () // defines a function
has been executed successfully, is saved to a specific memory space . Related Variables: path variable Save default value (centos6.x) # echo $PATH /usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin :/usr/sbin:/usr/bin:/root/bin Related Commands:which,whereis,hash which- Display command full path whichcommandwhereis- Show command path and help document path whereiscommand hash- Forget or display the cache information in the hash table hash Listing Hash Table information hash-d
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One of the most important new features of PHP 5.3 that has recently been released is the addition of namespaces. This article describes some of the terms of the PHP namespace, its parsing rules, and the application of some advanced features, in the hope that it will help readers actually use namespaces in their projects.
Here we introduce the use of the PHP namespace and the namespace keyword, and in this article we will look at the usage command and how PHP resolves the name of the namespace.
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