First of all, I will say that this is probably a sledgehammer approach
to accomplishing your goal. Many modern platforms have, in their
default /etc/profile, support for /etc/profile.d/ that works like a
run-parts for building the environment. The Puppet Agent package
installs its own $PATH entry in this way on both CentOS and Ubuntu.
So you're probably better off managing a file in that location so that
it gets auto-included by /etc/profile.
Secondly, your problem is variable interpolation. Because you're using
double quotes around the command and onlyif statments, Puppet is
interpolating $PATH to be (probably) an empty string, rather than a
literal "$PATH". You need to either change to single quotes (and then
adjust the quoting around your grep match string) or escape the $ with \$.
Finally, if you were to use the above solution, it's still a bit of a
sledgehammer because you're not really modeling state. The best
solution would actually be to use something like Augeas to examine the
file and modify as necessary. "exec / onlyif" and "exec / unless" are
kind of measures-of-last-resort in the Puppet world (now, having said
that, I must admit that I'm completely guilty of using it myself on
occasion :p ).
On 2016-06-29 12:19 PM, Andrew Morgan wrote:
I want to check if pattern exist in a file and then if it doesn;t echo
the pattern in the file.
class environment {
exec{'one_run':
path=>'/usr/bin',
command => "echo 'PATH=$PATH:/opt/logstash/bin' >>
/etc/profile",
onlyif => "grep -qFx 'PATH=$PATH:/opt/logstash/bin'
/etc/profile",
}
}
The above doesn't work,can anyone help with this please? I want to
check if PATH=$PATH:/opt/logstash/bin' exists in /etc/profile and if
not input it only once.
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