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Top Forums Shell Programming and Scripting PERL look ahead and behind ... Post 302229594 by popeye on Wednesday 27th of August 2008 09:17:07 AM
Old 08-27-2008
PERL look ahead and behind ...

I would like to search a router config file for "ip address $ip", once found, I want to grab the line just before that contains "interface $interfacetype"

basically saying, 10.3.127.9 is assigned to "Loopback1" given the below as an example.


interface Loopback1
ip address 10.3.127.9 255.255.255.255
!
interface FastEthernet0/0
ip address 10.3.126.9 255.255.255.248
ip access-group virus-security in
ip route-cache same-interface
no ip route-cache cef
no ip route-cache
no ip mroute-cache
ip policy route-map blockvirus445
duplex full
speed 100
ipx network 1090012A encapsulation SAP
bridge-group 1
bridge-group 1 input-lsap-list 200
!
 

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SLAPD-PERL(5)							File Formats Manual						     SLAPD-PERL(5)

NAME
slapd-perl - Perl backend to slapd SYNOPSIS
/etc/openldap/slapd.conf DESCRIPTION
The Perl backend to slapd(8) works by embedding a perl(1) interpreter into slapd(8). Any perl database section of the configuration file slapd.conf(5) must then specify what Perl module to use. Slapd then creates a new Perl object that handles all the requests for that par- ticular instance of the backend. You will need to create a method for each one of the following actions: * new # creates a new object, * search # performs the ldap search, * compare # does a compare, * modify # modifies an entry, * add # adds an entry to backend, * modrdn # modifies an entry's rdn, * delete # deletes an ldap entry, * config # process unknown config file lines, * init # called after backend is initialized. Unless otherwise specified, the methods return the result code which will be returned to the client. Unimplemented actions can just return unwillingToPerform (53). new This method is called when the configuration file encounters a perlmod line. The module in that line is then effectively `use'd into the perl interpreter, then the new method is called to create a new object. Note that multiple instances of that object may be instantiated, as with any perl object. The new method receives the class name as argument. search This method is called when a search request comes from a client. It arguments are as follows: * object reference * base DN * scope * alias deferencing policy * size limit * time limit * filter string * attributes only flag (1 for yes) * list of attributes to return (may be empty) Return value: (resultcode, ldif-entry, ldif-entry, ...) compare This method is called when a compare request comes from a client. Its arguments are as follows. * object reference * dn * attribute assertion string modify This method is called when a modify request comes from a client. Its arguments are as follows. * object reference * dn * a list formatted as follows ({ "ADD" | "DELETE" | "REPLACE" }, attributetype, value...)... add This method is called when a add request comes from a client. Its arguments are as follows. * object reference * entry in string format modrdn This method is called when a modrdn request comes from a client. Its arguments are as follows. * object reference * dn * new rdn * delete old dn flag (1 means yes) delete This method is called when a delete request comes from a client. Its arguments are as follows. * object reference * dn config This method is called with unknown slapd.conf(5) configuration file lines. Its arguments are as follows. * object reference * array of arguments on line Return value: nonzero if this is not a valid option. init This method is called after backend is initialized. Its argument is as follows. * object reference Return value: nonzero if initialization failed. CONFIGURATION
These slapd.conf options apply to the PERL backend database. That is, they must follow a "database perl" line and come before any subse- quent "backend" or "database" lines. Other database options are described in the slapd.conf(5) manual page. perlModulePath /path/to/libs Add the path to the @INC variable. perlModule ModName `Use' the module name ModName from ModName.pm filterSearchResults Search results are candidates that need to be filtered (with the filter in the search request), rather than search results to be returned directly to the client. EXAMPLE
There is an example Perl module `SampleLDAP' in the slapd/back-perl/ direcetory in the OpenLDAP source tree. WARNING
The interface of this backend to the perl module MAY change. Any suggestions would greatly be appreciated. FILES
/etc/openldap/slapd.conf default slapd configuration file SEE ALSO
slapd.conf(5), slapd(8), perl(1). OpenLDAP 2.1.X RELEASEDATE SLAPD-PERL(5)
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