Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

standards(5) [hpux man page]

standards(5)							File Formats Manual						      standards(5)

standards - UNIX standards behavior on HP-UX DESCRIPTION
HP-UX conforms to various UNIX standards. In some cases, these standards conflict. This manpage describes the methods that programmers and users must follow to have an application conform and execute according to a particular UNIX standard. UNIX Standard Conformant Programmer Environment The following table lists feature test macros and environment variables that must be defined while compiling an application. Both a fea- ture test macro and an environment variable must be defined while compiling the application so that the application conforms and executes according to a particular UNIX standard. Otherwise, the behavior is undefined. Standard Feature Test Macros to be Environment variable defined during compilation to be set UNIX 95 _XOPEN_SOURCE_EXTENDED=1 UNIX95 or UNIX_STD=95 or UNIX_STD=1995 UNIX 2003 _XOPEN_SOURCE=600 UNIX_STD=2003 The compiler uses the feature test macros to obtain the appropriate namespace from the header files. The compiler uses the environment variable to link in an appropriate object file to the executable. Using the environment variable customizes libc to match UNIX standards for various functions. If an application has already been compiled for default HP-UX behavior or for one particular standard, and needs to change to a particular UNIX standard behavior, recompile the application as specified in the above table. For an HP-UX command to conform to a particular UNIX standard behavior, the application has to set the corresponding environment variable as specified in the above table before executing that command. UNIX Standard Conformant User Environment To enable a particular UNIX standard conformant user environment, set the corresponding environment variable as defined in the above table. EXAMPLES
The following examples shows an application example. To have the system be conformant to UNIX2003 behavior, set the environment variable to and define the feature test macro before compilation. The following example changes the command to have UNIX95 behavior by setting one of the environment variables to or to before executing that command. There are three ways of setting the environment variable for UNIX95: or or SEE ALSO
cc(1), stdsyms(5). standards(5)

Check Out this Related Man Page

pwd(1)							      General Commands Manual							    pwd(1)

pwd - working directory name SYNOPSIS
prints the path name of the working (current) directory. Options recognizes the following options: Display the directory with the name of the symbolic link if any. If the environment variable contains an absolute path name of the current directory that does not contain the file names (dot) or (dot-dot), writes this path name to standard output. Otherwise, the option behaves like the option. Display the actual physical directory path. Directories of symbolic link types are not displayed. If both and are specified, the last one applies. If neither nor is specified, the default option is: from UNIX 2003 environment onwards; see standards(5). otherwise. EXTERNAL INFLUENCES
For information about the UNIX Standard environment, see standards(5). Environment Variables determines the language in which messages are displayed. If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari- able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multibyte character code sets are supported. DIAGNOSTICS
Possible file system trouble; contact system administrator. Current directory has been removed (usually by a different process). Use command to move to a valid directory (see cd(1)). EXAMPLES
If your home directory is and the command is executed from the home directory, typing produces the following display: In the following example, a symbolic link, points to the directory. Then the command displays the actual directory: The command displays the directory with the symbolic link: In the following example, there is no symbolic link. The displayed directory is the same for both the and options. AUTHOR
was developed by AT&T and HP. SEE ALSO
cd(1), csh(1), sh(1), sh-posix(1), standards(5). STANDARDS CONFORMANCE
Man Page