amanda-match — Common Amanda Match Expression
Several Amanda commands allow the user to specify dumps using "match expressions". This manual page describes the syntax of these expressions.
In some places, only certain match expressions are allowed. However, several commands take a dump specification ("dumpspec") consisting of a sequence of several expressions intended to match particular dumps in the catalog. Other applications take a DLE specification which indicates a set of DLEs to be operated on. These formats are described below.
The hosts and disks match by word. Each word is a glob expression, and words are separated by the character '.' for host expressions and '/' for disk expressions. You can anchor the expression on the left with a '^' or on the right with a '$'. The matcher is case insensitive for hosts but case sensitive for disks. A match succeeds if all words in the expression match contiguous words in the host or disk.
If the disk is a UNC ("\\windows\share") then all '\' are converted to '/' before the match. Using '\' is complicated because of the extra quoting required by the shell and amanda. It's easier to use '/' because it requires less quoting ("//windows/share")
The special characters follow. Note that the shell interprets some of these characters, so when used on the command line, they must be escaped appropriately for the shell.
word separator for a host
word separator for a disk
word separator for a UNC disk
anchor at left of word
anchor at right of word
match exactly one character except the separator
match zero or more characters except the separator
match zero or more characters including the separator
match exactly one of the characters enclosed by the brackets.
match exactly one character that is not enclosed by the brackets.
Will match hosta
, foo.hosta.org
, and
hoSTA.dOMAIna.ORG
but not hostb
.
Will match host
but not hosta
.
Will match hosta
and hostb
, but
not host
or hostabc
.
Will match hoina
but not ho.aina.org
.
Will match hoina
and ho.aina.org
.
Will match hosta
but not foo.hosta.org
.
Will match /dev/sda1
and /dev/sda12
.
Will match the disk opt
but not the host opt
.
Will match the host opt
but not the disk opt
.
Will match the disk /
but no other disk.
Will match the disks /usr
and /usr/local
.
Will match the disks /usr
but not /usr/local
.
Will match the disks \\windows1\share
and \\windows2\share
.
Will match the disks \\windows\share1
and \\windows\share2
.
Will match the disk \\windows\share
.
A datestamp expression is either a prefix of the datestamp, or a range expression (separated by '-') matching several prefixes. A leading ^ is removed, while arailing $ will force an exact match.
match all dates beginning with 20001212, 20001213 or 20001214
same as previous
match all dates between 20001212 and 20001224
match all dates that start with 2000121 (20001210-20001219)
match all dates that start with 2 (20000101-29991231)
match all dates between 20000101-20101231
match only 200010
Level expressions are either prefix matches e.g., "1", which matches "1", "10", and "123", absolute matches e.g., "3$" which only matches "3", or a range e.g., "3-5" which only matches levels 3, 4, and 5.
A dump specification is used to select one or more dumps from the catalog. It consists of a sequence of match expressions in the order host, disk, datestamp, and level. Note that some commands do not take a level argument, out of historical accident. Note, too, that the datestamp expression matches the time that the dump was made on the Amanda client, rather than the date it was moved to tape.
A DLE specification is used to select one or more DLEs. It consists of a sequence of match expressions. The first must be a host, and subsequent expressions will be experimentally matched against both hosts and disks in the disklist(5), preferring hosts. This dynamic matching process can lead to odd behavior in extreme cases (e.g., where a disk and a host have the same name), but for most uses does exactly what is expected.
/home/anderson
on host vpdesktop
All DLEs matching ^/var
or
^/etc
on any host
If no host matches "www", all DLEs matching
www
on hosts web1 and web2. If a host
matches "www", then all DLEs on hosts www, web1, and web2.
amanda(8), amanda(8), amfetchdump(8), amrestore(8), amadmin(8), amvault(8), amflush(8), amdump(8)
The Amanda Wiki: http://wiki.zmanda.com/
This manual page was written by
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