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Error phenomenon: XCODE 6.1 When using storyboard, error:Failed to instantiate the default View Controller for Uimainstoryboardfile ' Mainstoryboard '-perhaps the designated Entry point was not set?Cause analysis: No view controller in storyboard set the initial Scene.Solution: In Storyboard, select a view Conroll
Huawei Mobile Super Night mode uses advanced algorithms to enhance processing and re-adjust the white balance after shooting technology, by shooting multi-frame photos to synthesize the best results, support long-time exposure, suitable for shooting night Street View. The following is a comparison of normal mode photography and Super Night mode photography.So, P20 phone how to shoot good night? There
View KernelUname-rViewing the default boot orderawk-f\' '$1=="Menuentry"{print $2}'/etc/grub2.cfgCentOS Linux (3.18.3-1. el7.elrepo.x86_64)7(Core) CentOS Linux, with Linux3.10.0-123. El7.x86_64centos Linux, with Linux0-rescue-893B160E363B4EC7834719A7F06E67CF Default boot order is starting from 0, but our new kernel
Reasons for the occurrence:Adding a controller in controller A B--[a.view Addsubview:b.view]The new controller is popped out in Controller B times this waringSolve:[A addchildviewcontroller:b];[B.parentviewcontroller Presentviewcontroller:alertcontroller Animated:yes Completion:nil];See: http://stackoverflow.com/questions/19890761/ Warning-presenting-view-controllers-on-detached-
all local ports
Sudo ufw allow proto udp 192.168.0.1 port 53 to 192.168.0.2 port 53
Sudo ufw deny smtp prohibit external access to the smtp service
Sudo ufw delete allow smtp delete a rule created above
4. view the Firewall Status
Sudo ufw status
For general users, only the following settings are required:
Sudo apt-get install ufw
Sudo ufw enable
Sudo ufw default deny
The preceding three commands are safe
Umask-view and set the default properties of the file-Linux general technology-Linux technology and application information. The following is a detailed description. Generally, umask specifies the "Default attribute value of the current user when creating a file or directory ". There are two ways to
View the default encoding of the MySQL database. Use the status command to display the relational information of the database, for example: mysqlstatus; ---- mysqlVer14.12Distrib5.0.77, forWin32 (ia32) Connectionid: 1072 Currentdatabase: Currentuser: test@119.119.247.6SSL: NotinuseUsin
View the default encoding of the
This is because the reference to the related view is still saved in the database. You can use the clearcase tool cleartool.exe to completely delete the old view.
1. cleartool lsview-long viewname
---- The uuid recorded---- Format: 0a05ad0d. g024ac6. 9a80. 63: D8: 3A: B4: 14: C62. cleartool rmtag-
View the. SQL of the user's default table space.
Select Username,default_tablespace from Dba_users;
View the disk footprint of each table space. sql:
Selectb.file_id file ID number,B.tablespace_name table space Name,b.bytes/1024/1024| | ' M ' byte number,(B.bytes-sum (NVL (a.bytes,0))/1024/1024| | ' M ' has been used,Sum (NVL (a.bytes,0))/1024/1024| | ' M ' rema
ORACLE Database view User information using the default password after the Oracle database is created, many auxiliary users will be created. If these user accounts do not change the password, they will all use the default password, the default passwords of some accounts are
Tags: mysqlbinlogMysqlbinlog view binlog log times wrong unknown variable ' Default-character-set=utf8 'When you export a SQL file by using a full file and an incremental binlog file to restore the full database. Since the bare binlog file cannot be looked directly at, so using mysqlbinlog This tool is used to view the
1. On the desktop of the computer, right-click "network neighbor" and click "local connection" as shown in the following figure.2. Click "properties" in the window as shown in the following figure.3. Click Internet Protocol version 4 (TCP/IPv4) after enabling it. The effect is as follows:4. Here we can see that an IP address is automatically obtained.Of course, if it
First, install a software (gdebi) and run the following command:
Sudo apt-Get install gdebi
Then, view the directory (/var/Cache/APT/archives) and check the software package for which you need to find the installation path:
For example, to find out the specific installation path of bashdb:
After I view/var/Cache/APT/archives, the specific name of this installation package
This warning is sometimes seen when modal jumps
presenting view controllers on detached view controllers is discouraged
The reason is that the modal window present out, no longer use the present to eject other child windows
just change the self direct mode jump page to jump
After the Oracle database is created, many auxiliary users will be created. If these user accounts do not change their passwords, all of them use the default passwords.
After the Oracle database is created, many auxiliary users will be created. If these user accounts do not change their passwords, all of them use the default
1.linux view modify thread default stack space size ulimit-sA, by the command ulimit-s view the default stack space size of Linux, by default 10240 is 10Mb, by the command ulimit-s set size value temporarily change the stack space
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