We can use the file_line type reference to append or substitute a string inside a file with regular expression.
Add a string
file { '/tmp/eureka.txt':
ensure => present,
}->
file_line { 'Append a line to /tmp/eureka.txt':
path => '/tmp/eureka.txt',
line => 'Hello World',
}
Replace a string
file { '/tmp/eureka.txt':
ensure => present,
}->
file_line { 'Append a line to /tmp/eureka.txt':
path => '/tmp/eureka.txt',
line => 'Hello Eureka',
match => "^Hello.*$",
}
When you to replace the string, make sure the line attribute is also an valid entry in the match regular expression.
Done =)
Reference:
- Module of the Week: puppetlabs/stdlib – Puppet Labs standard library
- Puppet user Google Group – using file_line with match
Eureka! 
Excellent, thanks for the tip on how to replace a string in a file.
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Glad to know i could help. =)
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when user file_line , get following error
Puppet::Parser::AST::Resource failed with error ArgumentError: Invalid resource type file_line at
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Did u have the stdlib included?
GitHub – puppetlabs/puppetlabs-stdlib
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Any idea how to add a string on the end of a existing string and be sure it’s present ?
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replace the whole existing string?
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Hi
if you get the solution how to replace string could you please tell me? I am also getting same error “Puppet::Parser::AST::Resource failed with error ArgumentError: Invalid resource type file_line at
”
thanks
–girija
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hv you tried this?
Puppet: How to fix “Invalid resource type file_line”
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nice, thanks.
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Hey, just one question. say you had to replace a line with a facter variable. For eg. $fqdn gives the complete hostname of the server. Now how would you write the line attribute to replace a work with the $fqdn variable
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