Re: $generate lhs problem. Manual needs to be updated.
Takahiro Masuda wrote:
Yes I guess I didn't understand it totally because in the example syntax
is shown as lhs defined at the beginning
*$GENERATE* /|range|/ /|lhs|/ [/|ttl|/] [/|class|/] /|type|/ /|rhs|/ [
/|comment|/ ]
and when you read the explanation for lhs it shows the example ${-20,3,d}.
So I thought that ${-20,3,d} should be defined on the left side. The
example only shows one part. I think it'll be helpful if you add the
whole line in the example so users can see where to place it in the syntax
$GENERATE 1-127 $ CNAME ${3,0,d}.0
But what if they actually wanted:
$GENERATE 1-127 q${3,0,d}.m0.foo.com. A 12.1.1.$
The sample expansion is not just possible on the LHS. It's
ambidextrous. :)
I'm still not clear what the issue is.
AlanC
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$generate lhs problem. Manual needs to be updated.
Hi I was trying to get the $generate directive to work like so
11 IN PTR 14.cool.com.
30 IN PTR 33.cool.com.
$GENERATE 11-30 ${3,0,d} PTR $.COOL.COM.
I've read the manual here
http://www.bind9.net/manual/bind/9.3.2/Bv9ARM.ch06.html#id2566761---
Syntax: $GENERATE range lhs [ttl] [class] type rhs [ comment ]
lhs describes the owner name of the resource records to be created. Any single
$ symbols within the lhs side are replaced by the iterator value. To get a $ in
the output you need to escape the $ using a backslash \, e.g. \$. The $ may
optionally be followed by modifiers which change the offset from the iterator,
field width and base. Modifiers are introduced by a { immediately following the
$ as ${offset[,width[,base]]}. e.g. ${-20,3,d} which subtracts 20 from the
current value, prints the result as a decimal in a zero padded field of with 3.
Available output forms are decimal (d), octal (o) and hexadecimal (x or X for
uppercase). The default modifier is ${0,0,d}. If the lhs is not absolute, the
current $ORIGIN is appended to the name.
For compatibility with earlier versions $$ is still recognized a indicating a
literal $ in the output.
---
The tricky part is ${3,0,d} waas not working. I bumped into a site that stated
$GENERATE range rhs type lhs
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this worked.
Hopefully this will help somebody.
Anybody here have the ability to update the manual?
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Re: $generate lhs problem. Manual needs to be updated.
On Wed, 4 Mar 2009, Takahiro Masuda wrote:
The tricky part is ${3,0,d} waas not working. I bumped into a site
that stated $GENERATE range rhs type lhs
That is wrong.
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this
worked.
Anybody here have the ability to update the manual?
Yes.
But it appears your second try is correct.
I can improve the documentation to make sure that it explains the two
abbreviations:
lhs is left hand side (the label).
rhs is the right hand side (the RDATA).
Will that work for you?
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Re: $generate lhs problem. Manual needs to be updated.
In message 1e4079388e04544fa3ffa6a900d6fb65015d7...@exchange.vplsnet.net, Ta
kahiro Masuda writes:
Hi I was trying to get the $generate directive to work like so=20
11 IN PTR 14.cool.com.
30 IN PTR 33.cool.com.
$GENERATE 11-30 ${3,0,d} PTR $.COOL.COM.
Which doesn't match what you wanted to do.
I've read the manual here =
http://www.bind9.net/manual/bind/9.3.2/Bv9ARM.ch06.html#id2566761---
Syntax: $GENERATE range lhs [ttl] [class] type rhs [ comment ]
lhs describes the owner name of the resource records to be created. Any =
single $ symbols within the lhs side are replaced by the iterator value. =
To get a $ in the output you need to escape the $ using a backslash \, =
e.g. \$. The $ may optionally be followed by modifiers which change the =
offset from the iterator, field width and base. Modifiers are introduced =
by a { immediately following the $ as ${offset[,width[,base]]}. e.g. =
${-20,3,d} which subtracts 20 from the current value, prints the result =
as a decimal in a zero padded field of with 3. Available output forms =
are decimal (d), octal (o) and hexadecimal (x or X for uppercase). The =
default modifier is ${0,0,d}. If the lhs is not absolute, the current =
$ORIGIN is appended to the name.
For compatibility with earlier versions $$ is still recognized a =
indicating a literal $ in the output.
---
The tricky part is ${3,0,d} waas not working. I bumped into a site that =
stated $GENERATE range rhs type lhs
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this worked.
Hopefully this will help somebody.
Anybody here have the ability to update the manual?
${3,0,d} works on both the left hand side and the right hand side.
The same code is called to process both the lhs and the rhs.
Mark
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1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org
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Re: $generate lhs problem. Manual needs to be updated.
Jeremy,
I don't think the definitions of rhs and lhs are at issue. What
apparently led the original poster to the wrong solution initially was
the verbiage in the manual stating Any single *$* symbols within the
*lhs* side are replaced by the iterator value, which implies that $
replacement _only_ occurs within the LHS. As Mark confirmed, $ can
also occur in the RHS, and in fact that's what was required for the
correct solution.
Personally, I wouldn't remove within the LHS from the verbiage
completely, otherwise someone will undoubtedly complain about not being
able to perform a $ replacement in the class, type or TTL fields
(users being users :-)
But, maybe it could be amended to within the LHS or RHS...
- Kevin
Jeremy C. Reed wrote:
On Wed, 4 Mar 2009, Takahiro Masuda wrote:
The tricky part is ${3,0,d} waas not working. I bumped into a site
that stated $GENERATE range rhs type lhs
That is wrong.
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this
worked.
Anybody here have the ability to update the manual?
Yes.
But it appears your second try is correct.
I can improve the documentation to make sure that it explains the two
abbreviations:
lhs is left hand side (the label).
rhs is the right hand side (the RDATA).
Will that work for you?
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Re: $generate lhs problem. Manual needs to be updated.
In message 49af42f8.9070...@chrysler.com, Kevin Darcy writes:
Jeremy,
I don't think the definitions of rhs and lhs are at issue. What
apparently led the original poster to the wrong solution initially was
the verbiage in the manual stating Any single *$* symbols within the
*lhs* side are replaced by the iterator value, which implies that $
replacement _only_ occurs within the LHS. As Mark confirmed, $ can
also occur in the RHS, and in fact that's what was required for the
correct solution.
Personally, I wouldn't remove within the LHS from the verbiage
completely, otherwise someone will undoubtedly complain about not being
able to perform a $ replacement in the class, type or TTL fields
(users being users :-)
But, maybe it could be amended to within the LHS or RHS...
The quoted text was taken from a table describing all the
elements of a $GENERATE. I don't see how anyone reading
the table could say that $ only is valid on the left hand
side especially when there are examples above the table
showing it on both sides.
Mark
range
This can be one of two forms: start-stop or start-stop/step.
If the first form is used, then step is set to 1. All of
start, stop and step must be positive.
lhs
This describes the owner name of the resource records to be
created. Any single $ (dollar sign) symbols within the lhs
side are replaced by the iterator value. To get a $ in the
output, you need to escape the $ using a backslash \, e.g.
\$. The $ may optionally be followed by modifiers which
change the offset from the iterator, field width and base.
Modifiers are introduced by a { (left brace) immediately
following the $ as ${offset[,width[,base]]}. For example,
${-20,3,d} subtracts 20 from the current value, prints the
result as a decimal in a zeropadded field of width 3.
Available output forms are decimal (d), octal (o) and
hexadecimal (x or X for uppercase). The default modifier
is ${0,0,d}. If the lhs is not absolute, the current $ORIGIN
is appended to the name. For compatibility with earlier
versions, $$ is still recognized as indicating a literal $
in the output.
ttl
Specifies the time-to-live of the generated records. If not
specified this will be inherited using the normal ttl
inheritance rules. class and ttl can be entered in either
order.
class
Specifies the class of the generated records. This must
match the zone class if it is specified. class and ttl can
be entered in either order.
type
At present the only supported types are PTR, CNAME, DNAME,
A, and NS.
rhs
rhs is a domain name. It is processed similarly to lhs.
Jeremy C. Reed wrote:
On Wed, 4 Mar 2009, Takahiro Masuda wrote:
The tricky part is ${3,0,d} waas not working. I bumped into a site
that stated $GENERATE range rhs type lhs
That is wrong.
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this
worked.
Anybody here have the ability to update the manual?
Yes.
But it appears your second try is correct.
I can improve the documentation to make sure that it explains the two
abbreviations:
lhs is left hand side (the label).
rhs is the right hand side (the RDATA).
Will that work for you?
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--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org
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Re: $generate lhs problem. Manual needs to be updated.
Mark Andrews wrote:
In message 49af42f8.9070...@chrysler.com, Kevin Darcy writes:
Jeremy,
I don't think the definitions of rhs and lhs are at issue. What
apparently led the original poster to the wrong solution initially was
the verbiage in the manual stating Any single *$* symbols within the
*lhs* side are replaced by the iterator value, which implies that $
replacement _only_ occurs within the LHS. As Mark confirmed, $ can
also occur in the RHS, and in fact that's what was required for the
correct solution.
Personally, I wouldn't remove within the LHS from the verbiage
completely, otherwise someone will undoubtedly complain about not being
able to perform a $ replacement in the class, type or TTL fields
(users being users :-)
But, maybe it could be amended to within the LHS or RHS...
The quoted text was taken from a table describing all the
elements of a $GENERATE. I don't see how anyone reading
the table could say that $ only is valid on the left hand
side especially when there are examples above the table
showing it on both sides.
Mark
range
This can be one of two forms: start-stop or start-stop/step.
If the first form is used, then step is set to 1. All of
start, stop and step must be positive.
lhs
This describes the owner name of the resource records to be
created. Any single $ (dollar sign) symbols within the lhs
side are replaced by the iterator value. To get a $ in the
output, you need to escape the $ using a backslash \, e.g.
\$. The $ may optionally be followed by modifiers which
change the offset from the iterator, field width and base.
Modifiers are introduced by a { (left brace) immediately
following the $ as ${offset[,width[,base]]}. For example,
${-20,3,d} subtracts 20 from the current value, prints the
result as a decimal in a zeropadded field of width 3.
Available output forms are decimal (d), octal (o) and
hexadecimal (x or X for uppercase). The default modifier
is ${0,0,d}. If the lhs is not absolute, the current $ORIGIN
is appended to the name. For compatibility with earlier
versions, $$ is still recognized as indicating a literal $
in the output.
ttl
Specifies the time-to-live of the generated records. If not
specified this will be inherited using the normal ttl
inheritance rules. class and ttl can be entered in either
order.
class
Specifies the class of the generated records. This must
match the zone class if it is specified. class and ttl can
be entered in either order.
type
At present the only supported types are PTR, CNAME, DNAME,
A, and NS.
rhs
rhs is a domain name. It is processed similarly to lhs.
Jeremy C. Reed wrote:
On Wed, 4 Mar 2009, Takahiro Masuda wrote:
The tricky part is ${3,0,d} waas not working. I bumped into a site
that stated $GENERATE range rhs type lhs
That is wrong.
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this
worked.
Anybody here have the ability to update the manual?
Yes.
But it appears your second try is correct.
I can improve the documentation to make sure that it explains the two
abbreviations:
lhs is left hand side (the label).
rhs is the right hand side (the RDATA).
Will that work for you?
You're right, I wasn't looking at the documentation in full context,
only the text that the original poster showed.
Seems pretty clear to me, the example even shows $ replacements on the
right-hand side.
Perhaps the original poster will clarify what they think needs changing
in the documentation.
Or, perhaps, were they trying to navigate the .html file without using a
browser, e.g. in a text editor? That can give a pretty distorted view,
but it's hardly ISC's fault if people do that...
- Kevin
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RE: $generate lhs problem. Manual needs to be updated.
Yes I guess I didn't understand it totally because in the example syntax is
shown as lhs defined at the beginning
$GENERATE range lhs [ttl] [class] type rhs [ comment ]
and when you read the explanation for lhs it shows the example ${-20,3,d}.
So I thought that ${-20,3,d} should be defined on the left side. The example
only shows one part. I think it'll be helpful if you add the whole line in the
example so users can see where to place it in the syntax
$GENERATE 1-127 $ CNAME ${3,0,d}.0
taka
From: bind-users-boun...@lists.isc.org on behalf of Kevin Darcy
Sent: Wed 3/4/2009 8:20 PM
To: bind-users@lists.isc.org
Subject: Re: $generate lhs problem. Manual needs to be updated.
Mark Andrews wrote:
In message 49af42f8.9070...@chrysler.com, Kevin Darcy writes:
Jeremy,
I don't think the definitions of rhs and lhs are at issue. What
apparently led the original poster to the wrong solution initially was
the verbiage in the manual stating Any single *$* symbols within the
*lhs* side are replaced by the iterator value, which implies that $
replacement _only_ occurs within the LHS. As Mark confirmed, $ can
also occur in the RHS, and in fact that's what was required for the
correct solution.
Personally, I wouldn't remove within the LHS from the verbiage
completely, otherwise someone will undoubtedly complain about not being
able to perform a $ replacement in the class, type or TTL fields
(users being users :-)
But, maybe it could be amended to within the LHS or RHS...
The quoted text was taken from a table describing all the
elements of a $GENERATE. I don't see how anyone reading
the table could say that $ only is valid on the left hand
side especially when there are examples above the table
showing it on both sides.
Mark
range
This can be one of two forms: start-stop or start-stop/step.
If the first form is used, then step is set to 1. All of
start, stop and step must be positive.
lhs
This describes the owner name of the resource records to be
created. Any single $ (dollar sign) symbols within the lhs
side are replaced by the iterator value. To get a $ in the
output, you need to escape the $ using a backslash \, e.g.
\$. The $ may optionally be followed by modifiers which
change the offset from the iterator, field width and base.
Modifiers are introduced by a { (left brace) immediately
following the $ as ${offset[,width[,base]]}. For example,
${-20,3,d} subtracts 20 from the current value, prints the
result as a decimal in a zeropadded field of width 3.
Available output forms are decimal (d), octal (o) and
hexadecimal (x or X for uppercase). The default modifier
is ${0,0,d}. If the lhs is not absolute, the current $ORIGIN
is appended to the name. For compatibility with earlier
versions, $$ is still recognized as indicating a literal $
in the output.
ttl
Specifies the time-to-live of the generated records. If not
specified this will be inherited using the normal ttl
inheritance rules. class and ttl can be entered in either
order.
class
Specifies the class of the generated records. This must
match the zone class if it is specified. class and ttl can
be entered in either order.
type
At present the only supported types are PTR, CNAME, DNAME,
A, and NS.
rhs
rhs is a domain name. It is processed similarly to lhs.
Jeremy C. Reed wrote:
On Wed, 4 Mar 2009, Takahiro Masuda wrote:
The tricky part is ${3,0,d} waas not working. I bumped into a site
that stated $GENERATE range rhs type lhs
That is wrong.
I then tried $GENERATE 11-30 $ PTR ${3,0,d}.COOL.COM. and this
worked.
Anybody here have the ability to update the manual?
Yes.
But it appears your second try is correct.
I can improve the documentation to make sure that it explains the two
abbreviations:
lhs is left hand side (the label).
rhs is the right hand side (the RDATA).
Will that work for you?
You're right, I wasn't looking at the documentation in full context,
only the text that the original poster showed.
Seems pretty clear to me, the example even shows $ replacements on the
right-hand side.
Perhaps the original poster will clarify what they think needs changing
in the documentation.
Or, perhaps, were they trying to navigate the .html file without using a
browser, e.g. in a text editor? That can give a pretty distorted view,
but it's hardly ISC's fault if people do that...
- Kevin
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