Merge template file in bash - Revision history

Brianegge at 07:11, 8 January 2010

2010-01-08T07:11:10Z

← Older revision		Revision as of 07:11, 8 January 2010
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	I wanted to substitute some parameters in an xml file prior to feeding it to a Java program. The following one liner works in bash and uses perl to parse in a property file with '=' delimiters. All '''${}''' are substituted, and any missing params cause an error to be thrown.		I wanted to substitute some parameters in an xml file prior to feeding it to a Java program. The following one liner works in bash. In invokes a perl one liner using [http://tldp.org/LDP/abs/html/process-sub.html process substitution] and uses perl to parse in a property file with '=' delimiters. All '''${}''' are substituted, and any missing params cause an error to be thrown.

	<geshi lang="bash">		<geshi lang="bash">
	java -xmlconfig $(perl -pne 'BEGIN { open my $fh, $ENV{'SERVER_PROPERTIES_FILE'} or die $!; \		java -xmlconfig <(perl -pne 'BEGIN { open my $fh, $ENV{SERVER_PROPERTIES_FILE} or die $!; \
	%hash = map { chomp; split /=/ } <$fh>; } s/\${(.*)}/$hash{$1} or die "missing $1"/eg' < "${SERVER_XML_FILE}" )		%hash = map { chomp; split /=/ } <$fh>; } s/\${(.*)}/$hash{$1} or die "missing $1"/eg' < "${SERVER_XML_FILE}" )
	</geshi>		</geshi>

Brianegge at 07:01, 8 January 2010

2010-01-08T07:01:52Z

← Older revision		Revision as of 07:01, 8 January 2010
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	<geshi lang="bash">		<geshi lang="bash">
	java -xmlconfig $(perl -pne 'BEGIN { open my $fh, $ENV{'SERVER_PROPERTIES_FILE'} or die $!; %hash = map { chomp; split /=/ } <$fh>; } s/\${(.*)}/$hash{$1} or die "missing $1"/eg' < "${SERVER_XML_FILE}" ) \		java -xmlconfig $(perl -pne 'BEGIN { open my $fh, $ENV{'SERVER_PROPERTIES_FILE'} or die $!; \
			%hash = map { chomp; split /=/ } <$fh>; } s/\${(.*)}/$hash{$1} or die "missing $1"/eg' < "${SERVER_XML_FILE}" )
	</geshi>		</geshi>

	[[Category:Perl]]		[[Category:Perl]]
	[[Category:Bash]]		[[Category:Bash]]

Brianegge: Created page with 'I wanted to substitute some parameters in an xml file prior to feeding it to a Java program. The following one liner works in bash and uses perl to parse in a property file with…'

2010-01-08T07:00:56Z

Created page with 'I wanted to substitute some parameters in an xml file prior to feeding it to a Java program. The following one liner works in bash and uses perl to parse in a property file with…'

New page

I wanted to substitute some parameters in an xml file prior to feeding it to a Java program. The following one liner works in bash and uses perl to parse in a property file with '=' delimiters. All '''${}''' are substituted, and any missing params cause an error to be thrown.

<geshi lang="bash">
java -xmlconfig $(perl -pne 'BEGIN { open my $fh, $ENV{'SERVER_PROPERTIES_FILE'} or die $!; %hash = map { chomp; split /=/ } <$fh>; } s/\${(.*)}/$hash{$1} or die "missing $1"/eg' < "${SERVER_XML_FILE}" ) \
</geshi>

[[Category:Perl]]
[[Category:Bash]]