Linux installation and use under man

 

Common Law:

 

man [section] name

 

including:

 

section refers to what part of man pages, which can be 2, 3 ... 8, if not specified, man will follow the order and then click Find, find the first one to know.

 

name refers to a command, function, or file

 

section below for instructions to do something:
1 = commands (such as cp mv rm, etc.)

 

2 = system calls (such as openread close, etc.)

 

3 = C library functions (such as printf)

 

4 = devices and special files

 

5 至 8 omitted details, please see: man man

 

example:

 

man cp == man 1 cp, 1 normally omitted

 

man open == man 2 open, but if the words on the wrong man 3open: No entry for open in section 3 of the manual

 

man printf

 

Note: This is different from the man 3 printf, because the user command and there was an error printf command control format, so the first show user command: printf,

 

man 3 printf this is the real query C library functions in the printf function

 

PS: manpages have a homepage: http://www.kernel.org/pub/linux/docs/man-pages/ provides the latest manpages

 

 

Linux C + + under the man installation and use

 

1. install the C + + help manual
Linux distributions generally not installed by default in C + + help manual installation method is as follows

 

enter ftp://gcc.gnu.org/pub/gcc/libstdc++/doxygen < / strong> / site, or other available sites, I downloaded the file is libstdc + +-api.20130701.man.tar.bz2, of course, you or you can download other versions.

 

way to relieve stress: tar jxvf libstdc + +-api.20130310.man.tar.bz2. Note: If you are. Bz2 compressed file ending should be j at the beginning, such as tar jxvf .....; if it is. Gz at the end of the compressed file, it should be the beginning of z, such as tar zxvf ....
After decompression, man/man3 all the files copied to / usr/share/man/man3 /, can be.

 

 

2. in C + + man pages query function in C + + under Linux
query command or function is used, usually something like:

 

man printf

 

man 3 printf

 

man cat

 

but in order to avoid operating system, C language and C + +, confusion, currently installed C + + man pages with the above query commands there are some differences, mainly added a namespace qualified, which means that the use of such command: man cout, less than the query.

 

correct approach should be:

 

man std :: iostream, and then by searching / cout, cout find instructions

 

That query command should now

 

man namespace :: header

 

man namespace :: header files. Normally: man std :: header files, or man std :: function name, or the man std :: class name

 

 

link:

 

http://hi.baidu.com/linccn/item/a392b235c676aa4d3075a180

 

http://blog.csdn.net/wangrouyi/article/details/8882937