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

talk
Exit Values
Portability
3. The interrupt character (for example, ) terminates your talk session and
breaks the connection. When one side breaks the connection, talk notifies the
other side and exits.
4. The mesg command lets you refuse talk sessions. With:
mesg n
you can tell the system that you don’t want to be interrupted by talk requests. If
people try to establish a talk session with you, they are denied immediately; you
are not informed about such requests. For more details, see mesg.
The following exit status values are possible:
0 Successfully established and completed a transmission
>0 An error occurred, or you are trying to use talk on a terminal that cannot
handle the way talk uses the screen
POSIX.2 User Portability Extension, X/Open Portability Guide, UNIX systems.
Related Information
mail, mesg, who, write
tar — Manipulate the tar archive files to copy or back up a file
Format
Description
tar –c[#sbvwlzOUXS] –f file [–V volpat] [tarfile] [blocksize] [–C pathname]
tar –r[#sbvwlzOUXS] –f file [–V volpat] [tarfile] [blocksize]
tar –t[#sbvzEOUXS] –f file [–L type] [–V volpat] [tarfile] [blocksize] [–C
pathname]
tar –x[#AsbvwpmozOUXS] –f file [–V volpat] [tarfile] [blocksize]
Note
APAR OW52499 (OS/390 R6 - z/OS R4) changed the tar default behavior for
extended USTAR attributes. Before the APAR is applied, for tar -U, the -X is
the default (extended USTAR attributes are saved). After the APAR is applied,
for tar -U, the -O is the default (extended USTAR attributes are NOT saved).
The APAR also introduces an environment variable (_OS390_USTAR=Y)
which makes tar -U save the extended USTAR attributes as long as -O is not
used. For more information on extended USTAR attributes, see pax utility
under “z/OS extended USTAR support” on page 498.
tar reads, writes and lists archive files. An archive file is a single file containing one
or more files and/or directories. Archive files can be HFS files or MVS data sets. A
file stored inside an archive is called a component file; similarly, a directory stored
inside an archive is called a component directory.
Rule : MVS data sets cannot be specified for component files.
618 z/OS V1R9.0 UNIX System Services Command Reference