Open System Services Management and Operations Guide (G06.25+, H06.03+)

Managing OSS Files
Open System Services Management and Operations Guide—527191-002
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Backing Up User Files
where /user contains all working directories.
If you attempt to archive individual files, you must compensate for the fact that the pax
utility cannot append a file to an unlabeled tape. Each successive write to such a tape
begins at the beginning of the tape.
For example, if you issue the following commands from the shell:
find xlog -print | pax -wv -f /G/TAPE -W norewind
find xlog.bsm -print | pax -wv -f /G/TAPE -W norewind
then physically unload the tape, reload the tape, and enter:
pax -rv -f /G/TAPE -W norewind
then the tape contains only the last file archived by the two command lines entered. To
archive more than one file on an unlabeled tape, you must enter all the commands
within the same subshell. For example:
( find xlog -print; find xlog.bsm -print ) | pax -wv -f /G/tape
This command causes all the files printed by both find commands to be written to
tape, because the find commands are executed in a single subshell.
For more information about the pax and find commands, see the pax(1) reference
page and the find(1) reference page, either online or in the Open System Services
Shell and Utilities Reference Manual. Additional information about both commands is in
the Open System Services User’s Guide.
Backing Up the OSS File Hierarchy of the Current Directory
To back up the file hierarchy of the current directory to the tape mounted on Guardian
tape device $TAPE, using the blocking factor for 5120 bytes, enter the following OSS
shell command:
pax -wv -f /G/tape -b 10b .
This command has the following form:
pax -w -v -f archive_name -b blocksize .
-w
writes files to the standard output file in the specified archive format (the default
format is ustar).
Note. Do not begin find or pax operations at the root (/) directory. find and pax perform
recursive operations within directories unless you use the UTILSGE=NOG:NOE environment
variable or the -W NOG and -W NOE flags. The / directory contains /G and /E. If you begin an
operation that recursively processes directories at /, you can unintentionally process an entire
Guardian file system and the operation will take a very long time to finish.
See Using the Local Root Directory as a Pathname
on page 3-5 for more information about
UTILSGE, -W NOG, and -W NOE.