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Self-study Linux instruction analysis-alias

Self-study Linux instruction analysis-alias1 · command formatAlias name= ' command line 'Alias name= ' command ' I am Free Mans. " ‘2. Command functionDisplays and modifies aliases.1) to prevent human error by adding some protection parameters to the dangerous command,2) Turn many complex string commands into a simple string or command3. Command Labels[email protected] tmp]# cat ~/.BASHRC#. BASHRC# User specific aliases and functionsAlias rm= ' Rm-i '

SQL alias parsing (reprint)

By using SQL, you can specify aliases (alias) for column names and table names.In fact, there are three ways to alias the Select column, and these three methods are not applicable to all databases.Method one, directly after the field name alias, the middle is separated by a space.Method Two, specify the field alias wit

Linux system directory structure, file type, ls and alias commands

root root 176 12月 29 2013 .bashrc-rw-r--r--. 1 root root 100 12月 29 2013 .cshrc-rw-r--r--. 1 root root 129 12月 29 2013 .tcshrc6.-h Auto-transform units and-l use together7.ll is an alias for ls-l[[emailprotected] ~]# which llalias ll=‘ls -l --color=auto‘/usr/bin/ls File type D indicates directory -Represents normal files, can be viewed with cat, and some binary compiled files cannot be viewed c = string Device file L is sof

Detailed description of alias commands in linux

Detailed description of alias commands in linux: sets the alias of commands. Www.2cto.com syntax: alias [alias] [command name] parameter: If no parameter is added, all current alias settings are listed. Example: ermao @ lost-desktop :~ $

Linux under the alias command detailed

Linux under the alias command detailed Description of Use Sets the alias of the command. In a Linux system, if the command is too long and does not conform to the user's habits, then we can specify an alias for it. Although you can create a "link" for a command Resolves a long file name problem, but for commands with command-line arguments, t

MySQL learning footprint record 14-table alias and self-join

MySQL learning footprint record 14-table alias and self-join table used in this query: The following table num represents the bus route, such as 1 car, 2 car, stop with table parking site, such as Station A and Station B: route;+------+------+| num | stop |+------+------+| 1 | A || 1 | B || 1 | C || 2 | B || 2 | C || 2 | D |+------+------+ Prerequisites 1. Use the table alias

Nginx's difference between Root and alias

This article mainly describes the nginx about the root and alias of the difference, has a certain reference value, now share to everyone, the need for friends can refer to Conclusion Configure Demo: Location XXX { root yyy} Browser access to XXX, the actual access is yyy/xxxBrowser access to xxx/abc.html, the actual access is yyy/xxx/abc.htmlBrowser access to xxx/ccc/abc.html, the actual access is yyy/xxx/ccc/abc.html Conclusion: The root attribut

How thinkphp database operations are used with Alias

thinkphp database operation How to use alias? parameter types supported by coherent operation Alias is used to define the aliases string for the current data table Help thinkphp Operation Way alias How to use, not the original ecological SQL notation Thinkphp in the development of the document is not missing the introduction of

By using SQL, you can specify aliases for column names and table names (alias)

Label:By using SQL, you can specify aliases (alias) for column names and table names.SQL alias syntax for SQL alias tableSELECT column_name (s) from table_name as alias_name SQL Alias syntax for columnsSELECT column_name as Alias_name from table_name Alias instance: U

Set your own liux alias

You can customize your frequently-used alias in your shell configuration. For example, when using CSH ~ /. Cshrc. General alias:Alias CD1 'CD .. /'Alias CD2 'CD .. /.. /'Alias cd4' CD .. /.. /.. /.. /'Alias cd3' CD .. /.. /.. /'Alias ls' ls -- color = tty '

Command aliases alias settings

Command alias configuration: Alias, UnaliasCommand aliases are a very interesting thing, especially when your commands are very long! Also, add the default options to some of the usual commands, you can prevent some careless manslaughter files when the situation occurs! For example, if you want to query the hidden file, and need a long list and page by page, then need to release " Ls-al | more" This command

A classic email about vipt cache alias

Http://mail-index.netbsd.org/port-sh3/2006/09/07/0000.html uwe@ptc.spbu.ru wrote:> I'd be interested in hearing ideas of how to fix this properly.> > PR has more information. Essentially the symptom is that certain> programs "hang" in infinite TLB miss on startup b/c executing their> .init section triggers the condition.We have to consider how virtually-indexed-physically-tagged (VIPT) cacheshould be handled in both MI and MD layer.As mentioned in the Curt Schimmel's book (ISBN 0-201-63338-8)

Modify the default access path of phpMyAdmin through Alias

Can I use Alias to modify the default access path of phpMyAdmin? PhpMyAdmin configuration file. the conf file is located in/etc/httpd/conf. d/directory, all are located in/etc/httpd/conf. d/the configuration file in the directory uses Alias to modify the default access path of phpMyAdmin ? PhpMyAdmin configuration file. the conf file is located in/etc/httpd/conf. d/directory, all are located in/etc/httpd/

"Collection" Nginx "php,location,alias,504"

"Summary" Nginx "php,location,alias,504" ?? Installation #tar-zxvf nginx-1.0.5.tar.gz#cd nginx-1.0.5#./configure--prefix=/usr/local/nginx#make#make Install ? ? ?? Start Start #/usr/local/nginx/sbin/nginx//restart #/usr/local/nginx/sbin/nginx-s reload#/usr/local/nginx/sbin/nginx-s reopen ? ? ?? Configuring 1-php (fastcgi installation) ?? Configure 2-alias ..... http { ... .. server { ....

Linux IP alias and multi-nic binding

Linux IP alias and multi-nic binding (I) Nic advanced command www.2cto.com ① mii-tool eth0: View Nic status ② ethtool view Nic settings ethtool-I eth0: View NIC Driver ethtool eth0: view the physical characteristics of the network card ethtool-S eth0: view the underlying status of the network card (IP alias) Multiple IP addresses are configured on one physical network card to implement functions similar to

[Git Note] tips: how to configure command auto-completion and command alias

1. Auto-CompletionAfter installing git on a linux machine, commands cannot be automatically completed by default. For bash users, implementing git command completion is very simple:1) download git source code, cd to the contrib/completion directory, find the git-completion.bash File2) copy the above files to the home Directory of a person, which can be set to a hidden file to avoid accidental deletion:Cp./git-completion.bash ~ /. Git-completion.bashAfter completing the preceding two steps, when

Modify the default access path of phpMyAdmin through Alias

Can I use Alias to modify the default access path of phpMyAdmin? PhpMyAdmin configuration file. the conf file is located in etchttpdconf. d Directory, all are in etchttpdconf. the configuration files in the d directory are httpd sub-configuration files. syntax errors in any sub-configuration file may cause httpd startup failure .? [Root @ fedora modify the default access path of phpMyAdmin through Alias ?

Differences between root and alias in nginxlocation

: This article mainly introduces the differences between root and alias in nginxlocation. For more information about PHP tutorials, see. Today, I finally figured out the root role in location configuration and the role of alias. Their differences are also clear! Location/img/{alias/var/www/image/;} # If you follow the preceding configuration, when accessing th

Solve the problem that the Linux system fails after setting the alias command to restart

Solve the problem that the Linux system fails after setting the alias command to restart In most cases, linux is used on the Character interface. We do not want to repeat some long commands every time, which is not only a waste of time but also prone to errors. We will use the alias command to solve this problem. For example: Alias ll = 'LS-l -- color' In this wa

SQL Advanced application (in operator, between, alias: AS)

"Carter," and some databases list people between "Adams" and "Carter" and include "Adams" and "Carter", while others Lists the people between "Adams" and "Carter", including "Adams", but excludes "Carter".  So, please check how your database handles between .... And operator!  Example 2: In the persons table, use the not operator if you want to use the above example to show people outside the rangeSELECT * from Personswhere lastnamenot between ' Adams ' and ' Carter '  SQL

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