FTP server environment variables

Table 1 provides a list of environment variables used by FTP server that can be tailored to a particular installation.

Table 1. FTP server environment variables
Environment variable	Server, Client or Command-type application	Description	Any specific coding rules (or a link to syntax)
_ICONV_UCS2	FTP	Instructs iconv_open(Y, X) about which type of conversion method to set up when there is a choice between direct conversion from X to Y and indirect X to UCS-2 to Y.	This environment variable has no affect on streams that are based on z/OS® UNIX files. You can always read and write 0-byte records in z/OS UNIX files.
RESOLVER_CONFIG	FTP	The resolver configuration data sets or files.	None