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+
+###########
+noderange.3
+###########
+
+.. highlight:: perl
+
+
+****
+Name
+****
+
+
+\ **noderange**\  - syntax for compactly expressing a list of node names
+
+
+****************
+\ **Synopsis**\ 
+****************
+
+
+\ *Examples:*\ 
+
+
+.. code-block:: perl
+
+  node1,node2,node8,node20,group1
+ 
+  node14-node56,node70-node203,group1-group10
+ 
+  node1,node2,node8,node20,node14-node56,node70-node203
+ 
+  node[14-56]
+ 
+  f[1-3]n[1-20]
+ 
+  all,-node129-node256,-frame01-frame03
+ 
+  /node.*
+ 
+  ^/tmp/nodes
+ 
+  node10+5
+ 
+  10-15,-13
+ 
+  group1@group2
+ 
+  table.attribute<operator>value
+
+
+
+*******************
+\ **Description**\ 
+*******************
+
+
+\ **noderange**\  is a syntax that can be used in most xCAT commands to
+conveniently specify a list of nodes.  The result is that the  command  will
+be applied to a range of nodes, often in parallel.
+
+\ **noderange**\  is a comma-separated list.  Each token (text between commas)
+in the list can be any of the forms listed below:
+
+Individual node or group:
+
+
+.. code-block:: perl
+
+  node01
+  group1
+
+
+A range of nodes or groups:
+
+
+.. code-block:: perl
+
+  node01-node10  (equivalent to: node01,node02,node03,...node10)
+  node[01-10]    (same as above)
+  node01:node10  (same as above)
+  node[01:10]    (same as above)
+  f[1-2]n[1-3]   (equivalent to: f1n1,f1n2,f1n3,f2n1,f2n2,f2n3)
+  group1-group3  (equivalent to: group1,group2,group3)
+  (all the permutations supported above for nodes are also supported for groups)
+
+
+\ **nodeRange**\  tries to be intelligent about detecting padding, so
+you can specify "node001-node200" and it will add the proper number of
+zeroes to make all numbers 3 digits.
+
+An incremented range of nodes:
+
+
+.. code-block:: perl
+
+  node10+3  (equivalent to: node10,node11,node12,node13)
+
+
+A node shorthand range of nodes:
+
+
+.. code-block:: perl
+
+  10-20   (equivalent to: node10,node11,node12,...node20)
+  10+3    (equivalent to: node10,node11,node12,node13)
+
+
+Currently, the prefix that will be prepended for the above syntax is always "node".
+Eventually, the prefix and optional suffix will be settable via the environment variables
+XCAT_NODE_PREFIX and XCAT_NODE_SUFFIX, but currently this only works in bypass mode.
+
+A regular expression match of nodes or groups:
+
+
+.. code-block:: perl
+
+  /node[345].*   (will match any nodes that start with node3, node4, or node5)
+  /group[12].*   (will match any groups that start with group1 or group2)
+
+
+The path of a file containing noderanges of nodes or groups:
+
+
+.. code-block:: perl
+
+  ^/tmp/nodelist
+
+
+where /tmp/nodelist can contain entries like:
+
+
+.. code-block:: perl
+
+  #my node list (this line ignored)
+  ^/tmp/foo #ignored
+  node01    #node comment
+  node02
+  node03
+  node10-node20
+  /group[456].*
+  -node50
+
+
+Node ranges can contain any combination:
+
+
+.. code-block:: perl
+
+  node01-node30,node40,^/tmp/nodes,/node[13].*,2-10,node50+5
+
+
+Any individual \ **noderange**\  may be prefixed with an exclusion operator
+(default -) with the exception of the file operator (default ^).  This will cause
+that individual noderange to be subtracted from the total resulting list of nodes.
+
+The intersection operator @ calculates the intersection of the left and
+right sides:
+
+
+.. code-block:: perl
+
+  group1@group2   (will result in the list of nodes that group1 and group2 have in common)
+
+
+Any  combination  or  multiple  combinations of inclusive and exclusive
+ranges of nodes and groups is legal.  There is no precedence implied in
+the  order  of  the  arguments.   Exclusive ranges have precedence over
+inclusive.  Parentheses can be used to explicitly specify precendence of any operators.
+
+Nodes have precedence over groups.  If a node range match is made then
+no group range match will be attempted.
+
+All node and group names are validated against the nodelist table.  Invalid names
+are ignored and return nothing.
+
+\ **xCAT Node Name Format**\ 
+=============================
+
+
+Throughout this man page the term \ **xCAT Node Name Format**\  is used.
+\ **xCAT Node Name Format**\  is defined by the following regex:
+
+
+.. code-block:: perl
+
+  ^([A-Za-z-]+)([0-9]+)(([A-Za-z-]+[A-Za-z0-9-]*)*)
+
+
+In  plain  English,  a  node or group name is in \ **xCAT Node Name Format**\  if starting
+from the begining there are:
+
+
+\*
+ 
+ one or more alpha characters  of  any  case and  any  number  of "-" in any combination
+ 
+
+
+\*
+ 
+ followed by one or more numbers
+ 
+
+
+\*
+ 
+ then optionally followed by one alpha character of any case  or "-"
+ 
+
+
+\*
+ 
+ followed by any combination of case mixed alphanumerics and "-"
+ 
+
+
+\ **noderange**\  supports node/group names in \ *any*\  format.  \ **xCAT Node Name Format**\  is
+\ **not**\  required, however some node range methods used to determine range
+will not be used for non-conformant names.
+
+Example of \ **xCAT Node Name Format**\  node/group names:
+
+
+.. code-block:: perl
+
+  NODENAME           PREFIX      NUMBER   SUFFIX
+  node1              node        1
+  node001            node        001
+  node-001           node-       001
+  node-foo-001-bar   node-foo-   001      -bar
+  node-foo-1bar      node-foo-   1        bar
+  foo1bar2           foo         1        bar2
+  rack01unit34       rack        01       unit34
+  unit34rack01       unit        34       rack01
+  pos0134            pos         0134
+
+
+
+
+****************
+\ **Examples**\ 
+****************
+
+
+
+1.
+ 
+ Generates a list of all nodes (assuming all is a group) listed in the
+ \ **nodelist**\  table less node5 through node10:
+ 
+ 
+ .. code-block:: perl
+ 
+   all,-node5-node10
+ 
+ 
+
+
+2.
+ 
+ Generates  a  list  of  nodes 1 through 10 less nodes 3,4,5.  Note that
+ node4 is listed twice, first in the range and then at the end.  Because
+ exclusion has precedence node4 will be excluded.
+ 
+ 
+ .. code-block:: perl
+ 
+   node1-node10,-node3-node5,node4
+ 
+ 
+
+
+3.
+ 
+ Generates a list of nodes 1 through 10 less nodes 3 and 5.
+ 
+ 
+ .. code-block:: perl
+ 
+   node1-node10,-node3,-node5
+ 
+ 
+
+
+4.
+ 
+ Generates  a  list  of  all  (assuming  \`all'  is a group) nodes in the
+ \ **nodelist**\  table less 17 through 32.
+ 
+ 
+ .. code-block:: perl
+ 
+   -node17-node32,all
+ 
+ 
+
+
+5.
+ 
+ Generates a list of nodes 1 through 128, and user nodes 1 through 4.
+ 
+ 
+ .. code-block:: perl
+ 
+   node1-node128,user1-user4
+ 
+ 
+
+
+6.
+ 
+ Generates a list of all nodes (assuming \`all' is a group),  less  nodes
+ in  groups rack1 through rack3 (assuming groups rack1, rack2, and rack3
+ are defined), less nodes 100 through 200, less  nodes  in  the  storage
+ group.  Note that node150 is listed but is excluded.
+ 
+ 
+ .. code-block:: perl
+ 
+   all,-rack1-rack3,-node100-node200,node150,-storage
+ 
+ 
+
+
+7.
+ 
+ Generates  a  list of nodes matching the regex \ *node[23].\\**\ .  That is all
+ nodes that start with node2 or node3 and end in  anything  or  nothing.
+ E.g. node2, node3, node20, node30, node21234 all match.
+ 
+ 
+ .. code-block:: perl
+ 
+   /node[23].*
+ 
+ 
+
+
+8.
+ 
+ Generates  a  list of nodes which have the value hmc in the nodehm.cons 
+ attribute.
+ 
+ 
+ .. code-block:: perl
+ 
+   nodehm.cons==hmc
+  
+   nodehm.cons=~hmc
+ 
+ 
+
+
+9.
+ 
+ Generate a list of nodes in the 1st two frames:
+ 
+ 
+ .. code-block:: perl
+ 
+   f[1-2]n[1-42]
+ 
+ 
+
+
+
+****************
+\ **SEE ALSO**\ 
+****************
+
+
+nodels(1)|nodels.1
+