using sed to conditionally extract stanzas of a file based on a search string


 
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Old 11-25-2008
using sed to conditionally extract stanzas of a file based on a search string

Dear All,
I have a file with the syntax below (composed of several <log ..... </log> stanzas)
I need to search this file for a number e.g. 2348022225919, and if it is found in a stanza, copy the whole stanza/section (<log .... </log>) to another output file.

The numbers to search for are listed in an input file (easy enough to read that file in one line at a time), but I am having major problems trying to build a conditional instruction using sed to search the file (below) for a particular number and then copy its whole section if a match is found. Thanks.

<log logid="847b00c2190810312356170828/1/1/1">
<category>ProcEngineBL.Normal</category>
<operation>Get</operation>
<target>GsmFlex.Connection</target>
<instance>msisdn=2348022225919</instance>
<user>tester1</user>
<context>sog.Pro/context>
<status>SUCCESSFUL</status>
</log>
<log logid="827b00c43190810312356170828/1/2/1">
<category>ProcEngineBL.Normal</category>
<operation>Set</operation>
<target>GsmFlex.Connection</target>
<instance>msisdn=234802225919</instance>
<user>onwer1</user>
<context>sog.Pro/context>
<status>SUCCESSFUL</status>
</log>
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PASSWD.CONF(5)						      BSD File Formats Manual						    PASSWD.CONF(5)

NAME
passwd.conf -- password encryption configuration file SYNOPSIS
passwd.conf DESCRIPTION
The /etc/passwd.conf file, consisting of ``stanzas'', describes the configuration of the password cipher used to encrypt local or YP pass- words. There are default, user and group specific stanzas. If no user or group stanza to a specific option is available, the default stanza is used. To differentiate between user and group stanzas, groups are prefixed with a single colon (':'). Some fields and their possible values that can appear in this file are: localcipher The cipher to use for local passwords. Possible values are: ``old'', ``newsalt,<rounds>'', ``md5'', ``sha1,<rounds>'', and ``blowfish,<rounds>''. For ``newsalt'' the value of rounds is a 24-bit integer with a minimum of 7250 rounds. For ``sha1'' the value of rounds is a 32-bit integer, 0 means use the default of 24680. For ``blowfish'' the value can be between 4 and 31. It specifies the base 2 logarithm of the number of rounds. If not specified, the default value is ``old''. ypcipher The cipher to use for YP passwords. The possible values are the same as for localcipher. If not specified, the default value is ``old''. To retrieve information from this file use pw_getconf(3). FILES
/etc/passwd.conf EXAMPLES
Use SHA1 as the local cipher and old-style DES as the YP cipher. Use blowfish with 2^5 rounds for root: default: localcipher = sha1 ypcipher = old root: localcipher = blowfish,5 SEE ALSO
passwd(1), pwhash(1), pw_getconf(3), passwd(5) HISTORY
The passwd.conf configuration file first appeared in NetBSD 1.6. The default value of localcipher was set to ``sha1'' in /etc/passwd.conf starting from NetBSD 6.0. BSD
December 3, 2010 BSD