jrestore
The jrestore utility provides fast on-line restores from the saves produced by the jbackup utility. The jrestore can be controlled to restore
from any file type on the backup, from single records to multiple directories. The
jrestore utility can also be used to verify jbackup saves.
jrestore -Options
| Option |
Explanation |
| -a |
restore from current media position |
| -bn |
set number of read buffers to n (default is 8, minimum is 1) |
| -c"old new" |
restore old directory path as new directory path |
| -d"DirRE" |
restore directory files matching regular expression |
| -f Device |
restore from device file, default stdin |
| -h"HashRE" |
restore hash files matching regular expression |
| -H FileList |
restore files using only file names from FileList file |
| -i"ItemRE" |
restore hash file items matching regular expression |
| -I ItemList |
restore hash file items using only item ids from ItemList file |
| -l"LnkdRE" |
restore links matching regular expression |
| -n |
control info files not restored |
| -N |
control info files restored and indexes rebuilt |
| -o"OfileRE" |
restore other files matching regular expression |
| -pn |
set priority, nice value of parent process |
| -u"UfileRE" |
restore normal file matching regular expression |
| -v |
verbose mode |
| -F |
use fixed block device. Use for QIC tapes |
| -B |
force block size to 128k, default 16k |
| -Cn |
force block size to n bytes, rounded to nearest k |
| -P |
print and scan files only, no restore |
| -O |
overwrite existing files and records |
| -R |
suppress rewind last reel |
| -T type |
restore hash files as specified file type; the original
modulo and separation will be retained rather than use the 'resize'
parameters. |
| -U |
update only does not overwrite existing files or records |
| -V |
verbose dot mode, displays a "." for each file |
NOTES
When using jrestore ensure that you executing at the standard shell not in jsh
otherwise the double quotes and other meta characters will lose their meaning.
NT Note: When specifying NT path names the backslash must be escaped with a backslash,
otherwise the backslash character is removed. e.g.
C:\\MyApp\\new
EXAMPLES
jrestore -f /dev/rmt/ctape -P
Reads formatted files and directories from a streaming cartridge device, displaying each
file or directory as it is encountered. This option can be used to verify that the tape
does not contain any parity or formatting errors and so can be restored at a later date.
jrestore -f /dev/rmt/floppy -v
Reads and restores formatted files and directories from a floppy disk device, displaying
each file or directory as it is encountered.
jbackup -Ajbase | jrestore -c"/home/old /home/new"
Reads formatted files and directories from stdin, which is being supplied by jbackup,
modifies all occurrences of path string /home/old to /home/new and then restores files and
directories using modified path string.
jrestore -f BACKUP -d".*PAYROLL$"
Reads formatted files and directories from UNIX file BACKUP, limits restore to any
directories whose path name ends in PAYROLL.
jrestore -f BACKUP -h"/CUSTOMERS$" -i".*SMITH.*"
Reads formatted files and directories from UNIX file BACKUP, limits restore to any hash
files whose path name ends in CUSTOMERS, and only restores record ids containing the
string SMITH.
Files
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