SYNOPSIS
const char *getudprefix(void);
DESCRIPTION
This function returns the pathname of the directory off of which most Unidata-supported software is installed. Thus, it may be used during program execution to help form needed pathnames. For example:
-
#include <string.h> extern const char *getudprefix(void); char pathbuf[256]; ... (void)strcat(strcpy(pathbuf, getudprefix()), "/etc/udunits.dat");
The function returns the value of the environment variable UDPREFIX, if it exists; otherwise, the value of the environment variable UDHOME is returned, if it exists; otherwise, the home directory of the user database entry returned by `getuduser()' is used, if it exists; otherwise, the empty string ("") is returned.
ENVIRONMENT
- UDPREFIX
- Contains the pathname of the root of the installed, Unidata software.
- UDHOME
- Contains the pathname of the home directory of the Unidata user.