Information on file system coding (df)

The -c option enables the df command to output the coding of a file system (EBCDIC or ASCII).

This “coding” is defined using the parameter POSIX file system marker = yes (EBCDIC) or no (ASCII) when a ufs file system is configured. If the marker is not set, the file system is considered to be an ASCII file system under POSIX. This means that an ASCII-EBCDIC conversion takes place, depending on the IO_CONVERSION environment variable (see “Copying and converting files”).

The POSIX installation mask for file system administration also shows the type of coding.