-search) 'red': CAT/etc/RedHat-release[Note: press Enter when you see your command, which will execute the command from the history]# Cat/etc/RedHat-releaseFedora release 9 (sulphur)
Repeat the previous commandYou can run the previous command again in four ways:
Use the up arrow key and press enter to execute.
Press !! And press enter to execute.
Enter! -1 and press enter to execute.
Press Ctrl + P and press Enter.
Execute a specified command from the command historyIn the fo
; Delete from PTB where deptno = 30; -- delete record 1 row deleted from the master table again. statistics ---------------------------------------------------------- 186 recursive cballs 6 dB block gets 3502 consistent gets -- at this time, the consistent reading is 3502, 100 times more than the last time 0 physical reads 740 redo size 2065 bytes sent via SQL * Net to client 1479 bytes encoded ed via SQL * Net from client 6 SQL * Net roundtrips to/fr
java.lang.reflect.Method.invoke(Method.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:416) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953) at org.apache.hadoop.ipc.Client.call(Client
will be changed together.
For example, if you want to enable all the permissions of the. bashrc file, grant the following permissions:
[root @ WWW ~] # ls - Al. bashrc -RW-r -- 1 root Root 395 Jul 4 11 : 45 . bashrc [root @ WWW ~] # chmod 777 . bashrc [root @ WWW ~] # ls - Al. bashrc -rwxrwxrwx 1 root Root 395 Jul 4 11 : 45 . bashrc
What if I want to change the permission to "-rwxr-XR? Then the permission score is [4 + 2 + 1] [4 + 0 + 1] [4 + 0 + 0] = 754 hello! Th
Standard webpage size
1. If the webpage width is within 800 for 600*778, the horizontal scroll bar will not appear. The height is determined by the layout and content.2. In the case of 1024*768, the webpage width is kept within 1002. If the box is full, the height is between 612-615. the horizontal and vertical scroll bars will not appear. (There is a set standard value in DW. The standard size of the 1024*768 page is 955*600. Just do it according to its size)3. In PS, a webpage can be displaye
first line of each test case contains two integers, m and n, giving the number of rows and columns (m
Each constraint consists of two integers r and q, specifying some entry (or entries) in the matrix (the upper left corner is 1 1 and 0 is interpreted as "ALL", I. e. 4 0 means all entries on the fourth row and 0 0 means the entire matrix), one element from the set {Output
For each case output a matrix of non-negative integers meeting the above constraints or the string "IMPOSSIBLE" if no legal
Installing Oracle RAC on the AIX platform is a pitfall. I verified this again today because there are too many bugs! Record the problem because there are too many bugs! We strongly recommend and look forward to the development of Oracle RAC on the Linux platform. The following is a record of the problem:
> Server: IBM Power 740
> Storage: ibm ds 5020
> Operating system:
Mzrac2 @ root [/oracle] oslevel-s
6100-07-00-0000
> Oracle Grid Database: 1
to 5% of the CPU's core processing capacity, but for some reason the system still reaches the limit when there are only 1000 logical partitions, instead of the 256 logical partitions you expect on the 5120 core system. With 32 TB of compressed memory, a host can allocate GB of virtual memory to a logical partition, this is sufficient for the cloud that provides IBM I And AIX capabilities to practical users. The problem is that each slice won't have too many CPUs. A single chassis is about 300 C
Php has a function to process images. php can also scale images with high requirements. First, use an INI file to set the size to be scaled. if the value is 0 in width or height, the image is zoomed in or out. if the value is 0, the original size is used, if none of them are 0, pull them to the specified size.
Note: When the INI file is interpreted as a php file, there is no output, which is intended for security reasons. The annotation of the INI file.
An example of the INI file I set is as f
cannot be used. Install the latest version hidef 0.1.13 and stable released on the official website for more than a year.
It took about 1000 ms to write a simple program to test define. For a medium-sized website (for example, if php runs 10000000 times a day), if 25 constants are defined on each page, 25/1000*2.8*700000 = 700 ms per day is required, that is, seconds. Hidef can save S of PHP running time in a day.Let's take a look at the reading performance. we can test a constant for one milli
. Bit fail 4.Epochs 690. Current error:0.2500000000. Bit fail 4.Epochs 700. Current error:0.2500000000. Bit fail 4.Epochs 710. Current error:0.2500000000. Bit fail 4.Epochs 720. Current error:0.2500000298. Bit fail 4.Epochs 730. Current error:0.2500000000. Bit fail 4.Epochs 740. Current error:0.2500000000. Bit fail 4.Epochs 750. Current error:0.2500000000. Bit fail 4.Epochs 760. Current error:0.2499999851. Bit fail 4.Epochs 770. Current error:0.250000
10-14 Exams7 O'Clock start the exam, the first problem, ah, directly take the mold in the process of adding the business can be, cut off cut off.
1. Light Sword(Sword.pas/c/cpp)"Title description"Xiao Lin and Liang each have a lightsaber, the length of a and B, respectively, they take the lightsaber to a contest. EveryRound, the long lightsaber will chop to the short lightsaber, after the cut, the short light sword intact, and the long lightsaber is cut into two paragraphs,The length of
-black tree takes a few milliseconds. The 100,000-level look-up time is 670 , the average tree height is the layer;Constructing a 1 million-node red-black tree takes 1850 milliseconds. Millions find time is 840 nanoseconds, average tree height layer. Red and black Trees:Constructing a 10,000-node red-black tree takes a few milliseconds. The Million-level lookup time is 430 , the average tree height is the layer;Constructing a 100,000-node red-black tree takes a time of nine milliseconds. T
Bond 3 xxxx Treasury bond repurchase 1 7 XXXX Original investment Fund 8 XXXX Securities Investment Fund 2 0 XXXX B-Share securities 7 XXXX B-Share issuance 8 xxxx B-Share warrants 3 0 XXXX Gem Securities 7 xxxx Gem additional 8 xxxx gem warrants 3 9 XXXX composite Index/Ingredient index 2, new Old Securities code conversion of this a-share securities code to upgrade the original code before adding "00", but there are two a-share stock promotion method is special, respectively, "0696 St Lian Yi
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