Merge template file in bash: Difference between revisions
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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]] | ||
Revision as of 03:01, 8 January 2010
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>