|o||navigation: moving up and down the configuration tree.|
|o||list and hash operation: select, add or delete hash or list item (also known as id items)|
|o||leaf operation: select, modify or delecte leaf value|
|o||annotation: modify or delete configuration annotation (aka comment)|
- Go up one node ! Go to the root node of the configuration tree. xxx Go down using xxx element. (For node type element) /xxx Go up until the element xxx is found. This search can be combined with one of the command specified below, e.g /a_string="foo bar"
xxx:yy Go down using xxx element and id yy (For hash or list element with node cargo_type). Literal \n will be replaced by real \n (LF in Unix). xxx:~yy Go down using xxx element and loop over the ids that match the regex specified by yy. (For hash).
For instance, with OpenSsh model, you could do
to set foo-user users for all your debian accounts.
The leading and trailing / may be omitted. Be sure to surround the regexp with double quote if space are embedded in the regex.
Note that the loop ends when the load command goes above the element where the loop is executed. For instance, the instruction below will try to execute DX=BV and int_v=9 for all elements of std_id hash:
std_id:~/^\w+$/ DX=Bv int_v=9
In the examples below only DX=BV is executed by the loop:
std_id:~/^\w+$/ DX=Bv - int_v=9 std_id:~/^\w+$/ DX=Bv ! int_v=9
The loop is done on all elements of the hash when no value is passed after ":~" (mnemonic: an empty regexp matches any value).
xxx:-yy Delete item referenced by xxx element and id yy. For a list, this is equivalent to splice xxx,yy,1. This command does not go down in the tree (since it has just deleted the element). I.e. a - is generally not needed afterwards. xxx:-=yy Remove the element whose value is yy. For list or hash of leaves. Will not complain if the value to delete is not found. xxx:-~/yy/ Remove the element whose value matches yy. For list or hash of leaves. Will not complain if no value were deleted. xxx:=~s/yy/zz/ Substitute a value with another. Perl switches can be used(e.g. xxx:=~s/yy/zz/gi) xxx:<yy or xxx:.push(yy) Push yy value on xxx list xxx:>yy or xxx:.unshift(yy) Unshift yy value on xxx list xxx:@ or xxx:.sort Sort the list xxx:.insert_at(yy,zz) Insert zz value on xxx list before <B>indexB> yy. xxx:.insert_before(yy,zz) Insert zz value on xxx list before <B>valueB> yy. xxx:.insert_before(/yy/,zz) Insert zz value on xxx list before <B>valueB> matching yy. xxx:.insort(zz) Insert zz value on xxx list so that existing alphanumeric order is preserved. xxx:=z1,z2,z3 Set list element xxx to list z1,z2,z3. Use ,, for undef values, and "" for empty values.
I.e, for a list (a,undef,,c), use a,,"",c.
xxx:yy=zz For hash element containing leaf cargo_type. Set the leaf identified by key yy to value zz.
Using xxx:~/yy/=zz is also possible.
xxx:.copy(yy,zz) copy item yy in zz
xxx=zz Set element xxx to value yy. load also accepts to set elements with a quoted string. (For leaf element) Literal \n will be replaced by real \n (LF in Unix). Literal \\ will be replaced by \.
For instance foo="a quoted string" or foo="\"bar\" and \"baz\"".
xxx=~s/foo/bar/ Apply the substitution to the value of xxx. s/foo/bar/ is the standard Perl s substitution pattern.
If your patten needs white spaces, you will need to surround the pattern with quotes:
xxx=~"s/foo bar/bar baz/"
Perl pattern modifiers are accepted
xxx~ Undef element xxx xxx.=zzz Will append zzz value to current values (valid for leaf elements).
xxx#zzz or xxx:yyy#zzz Element annotation. Can be quoted or not quoted. Note that annotations are always placed at the end of an action item.
You can surround indexes and values with double quotes. E.g.:
a_string="\"foo\" and \"bar\""
You can use cme to modify configuration with cme modify command.
cme modify ssh ControlMaster=auto ControlPath="~/.ssh/master-%r@%n:%p"
To delete Host * entry:
cme modify ssh Host:-"*"
To specify 2 Host with a single command:
cme modify ssh Host:"foo* bar*" ForwardX11=yes HostName="foo.com" - Host:baz HostName="baz.com"
Note the - used to go up one node before "Host:baz. In this case, up one node leads to the root node, so ! could also be used instead of -":
cme modify ssh Host:"foo* bar*" ForwardX11=yes HostName="foo.com" ! Host:baz HostName="baz.com"
Lets modify now the host name of using a .org domain instead of .com. The :~ operator uses a regexp to loop over several Host entries:
cme modify ssh Host:~/ba[rz]/ HostName=~s/.com$/.org/
Now that ssh config is mucked up with dummy entries, lets clean up:
cme modify ssh Host:-"baz" Host:-"foo* bar*"
Load data into the node tree (from the node passed with node) and fill values as we go following the instructions passed with step. (step can also be an array ref).
node node ref of the root of the tree (of sub-root) to start the load from. step A string or an array ref containing the steps to load. See above for a description of the string. check Whether to check values while loading. Either yes (default), no or skip. Loading with skip will discard bad values.
Dominique Dumont, (ddumont at cpan dot org)
This software is Copyright (c) 2005-2016 by Dominique Dumont.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999
|perl v5.20.3||CONFIG::MODEL::LOADER (3)||2016-04-03|