[Shell] basic Shell functions: Historical commands aliases, and basic shell functions
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I. History commands
History# View historical commands
History-c# Clear history commands
History-w# Directly write the history commands in the cache into the history command to save the file ~ /. Bash_history
Vim/etc/profile# The default history command saves 1000 records. You can modify the
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 '
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
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
SYNTAX (SYNTAX ):
Android: exported = ["true" | "false"]Android: icon = "drawable resource"Android: label = "string resource"Android: name = "string"Android: permission = "string"Android: targetActivity = "string">...
Included IN (contained in ):
Can contain ):
DESCRIPTION ):
This element is used to set an alias for the Activity specified by the targetActivity attribute. The target Activity and the alias
Today, when I was helping a brother check the code for a custom control, I felt that he had more inconsistencies with the use of Xtype and alias and ExtJS the use of the sample code, and I was not quite clear about the best way to use the two properties. So after going home, I sort out this document. On the one hand to standardize our own code, on the other hand also shared to everyone, after all, the two properties of the detailed discussion of the i
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
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
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
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
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)
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/
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
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
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
?
: 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
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
"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
The previous period of time to migrate the company's mailbox, related to new and old mailbox account information comparison. The sAMAccountName and alias are not the same mailbox users to collate, do a separate comparison. Here are the commands scripts:
Command:Get-Mailbox -ResultSize Unlimited | where {$_.SamAccountName -ne $_.Alias}
Script
# Load Exchange, AD module Import-module acti
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