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

Limits
Portability
v Argument file not a regular file: unchanged
v Argument file has other links: unchanged
v No space for compression tables
2 One or more files were not compressed because the compressed version
was larger than the original
This implementation of compress is limited to a maximum of 16-bit compression.
A binary-compatible version of compress with more options is often found on UNIX
systems.
The –D option is an extension to traditional implementations of compress. The –D,
–d and –V options are extensions of the POSIX standard.
For portability, you should restrict the number of bits in the code (–b option) to a
value between 9 and 14.
Related Information
cpio, pack, pax, tar, uncompress, unpack, zcat
confighfs — Invoke the vfs_pfsctl function for HFS file systems
Format
Description
Options
confighfs [–l] [–v n] [–f n] [–q] [pathname] [–x[n] size pathname]
Note: The l option signifies a lowercase L, not an uppercase i.
confighfs gives interactive shell users the ability to invoke the vfs_pfsctl function.
The vfs_pfsctl function is used to pass control information to the PFS (physical file
system). For more information on vfs_pfsctl, see the z/OS UNIX System Services
File System Interface Reference. Detailed information on its use can be found in
z/OS DFSMS Using Data Sets.
confighfs resides in the following directory: /usr/lpp/dfsms/bin/. This directory is
not part of the default search path definition. Therefore, the directory must be
included in the command specification when invoking the command.
Restriction: You can only use the confighfs command when working with the
DFSMS file system (HFS).
Tip: For the zFS file system, use the zfsadmin command. For more information,
see z/OS Distributed File Service System z File System Administration.
–l Query HFS limits.
Note: l signifies a lowercase L, not an uppercase i.
compress
Chapter 2. Shell command descriptions 145