z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

Exit Values
mkdir /mega
mount -f ’posix.hfs.mega’ /mega
mkdir /mega/wellie0
mount -f ’posix.hfs.wellie0’ /mega/wellie0
then:
unmount -R /mega
will unmount the file system mounted at /mega/wellie0 and /mega. Entering the
same command again:
unmount -R /mega
will attempt to unmount the file system containing the /mega directory (in this
case root) and any other file systems that are mounted on root.
0 Successful completion
Related Information
chmount, mount
unpack — Decode Huffman packed files
Format
Description
Localization
unpack file...
Note: The unpack utility is fully supported for compatibility with older UNIX
systems. However, it is recommended that the uncompress utility be used
instead because it may provide greater functionality and is considered the
standard for portable UNIX applications as defined by POSIX.2 IEEE
standard 1003.2-1992.
unpack uncompresses files compressed by pack, using a Huffman minimal
redundancy code. By default, unpack looks for file with a .z extension. It places the
decompressed output in a file with the same name, but without the extension. The
owner, permissions, and times of last access and last modification are also
preserved. Packed files can be identified by file. You can use pcat to view packed
text files without unpacking them in place.
unpack doesn’t unpack a file if:
v The file name is too long after the .z is removed
v The input file cannot be opened
v An existing file has the same name as the output file
v The output file can’t be created
v The input file doesn’t appear to have been created by pack
unpack uses the following localization environment variables:
v LANG
v LC_ALL
v LC_COLLATE
v LC_CTYPE
unmount
Chapter 2. Shell command descriptions 731