pgp command line examples

' | bc128$ echo "obase=10;ibase=16;80" | bc1284. Exponential operation:$ echo "5^5" | bc3125$ echo "(5^5) ^5" | bc298023223876953125Remember that the result of the first exponential operation is to add parentheses.5. Function library-based operationsBC supports the following functions:s (x): sine function (x is radians)C (x): cosine function (x is radians)A (x): Inverse tangent function (the result is radians)l (x): Natural logarithm functionE (x): exponential function with E as the baseJ (n,x)

Description The password you enter when you create the database is the default password to modify the system, and the password to enter when you log on as system and Sysman default is the modified password (the password you entered when you created the database). If you want to create a new user, you must be logged in as System or Sysman (the two most privileged) to create Creating User format: Create user username identified by password (for example: Create user cht identified by CHT;) Afte

I learned the basics of command line today and cannot digest it! -- Linux general technology-Linux technology and application information. For details, refer to the following section. The cat has been in Xinhua bookstore for several days. In the past few days, it was just like watching the relevant books. These two days, I decided to take a few days and plan to attack the books... Today we can see the

We often use a program in Linux to add parameters, and now it is much more powerful to understand the module Getopt::long in Perl about control parameters than to use @ARGV arrays directly. I think you know there are two different types of parameters in Linux. • Long Parameter –help• Short Parameters-HThat is--and--the distinction. – Represents the full parameter.-Represents a simplified parameter. These two methods are supported in this module of Perl.This is to introduce the two Getopt actual

/** * Jerugraphics v 1.0 * * See some examples of dynamically generating images are all servlet-completed, * and the program is very long, feel is not whether from the practicality or readability is not too good. * Here is a snippet of code that generates an image file on the command line. Is this simple and easy to use? * * Create a BufferedImage object,

Turn on Oracle snooping：lsnrctl StartTurn off monitoring：Lsnrctl StopThe listener shuts down then the client cannot connectEnter Sqlplus：Sqlplus/nologsign in with the Sysdab role Sqlplus：Conn/as sysdba;Start the database：startup;Close the database：shutdown immediate;(can only be sysdba to close, should be a role issue) connecting EIPDTP users: conn EIPDTP/EIPDTP; Authorization :Grant Connect,resource to * * *;Grant Create any table to * * *;Grant Delete any table to * * *;Grant Update any table

Label:Numeric functions are one of the most commonly used functions, and it is necessary to learn MySQL, which is commonly used as follows:1. Ceil: Returns the smallest integer value greater than a number:2. Floor: In contrast to the previous one, returns the maximum integer value less than a certain number:3. Round: Returns the value after a value is rounded:For example, the second parameter of round represents the number of decimal digits that need to be preserved.4. Truncate: Returns the valu

(i) Main function callThe main function acts as the entry function when the program is run, how is it called? The first thing to be clear is that the main function is also a function that can only be executed if it is called. In fact, when executing an executable program, before calling the main function, the kernel invokes a special startup routine that is used as the starting address for the executable program. How does the startup routine act as the starting address for an executable program?