Forum: Cfengine Help
Subject: copy file from A to B only if it is not present in C
Author: erik
Link to topic: https://cfengine.com/forum/read.php?3,21342,21342#msg-21342
Directories A, B and C have identical directory structure. I need to copy a
file from directory A to directory B if the file does not exist in directory C.
The only way I have found of doing this is with a separate perl script used in
the file_select compound body:
body common control {
bundlesequence => { "test" };
}
bundle agent test {
files:
"/B"
copy_from => local_cp("/A"),
depth_search => recurse("inf"),
file_select => in_C;
}
body copy_from local_cp(src) {
source => "$(src)";
}
body depth_search recurse(d) {
depth => "$(d)";
}
body file_select in_C {
exec_program => "/tmp/mycheck $(this.promiser) /A";
file_result => "exec_program";
}
where mycheck is
#!/usr/bin/perl
if($ARGV[0] =~ m/$ARGV[1](.*)$/) {
if (-f "C$1") {
exit -1;
} else {
exit 0;
}
}
this works, but I suspect it is an expensive solution for large directory
trees, I would much rather have done something with ifvarclass and fileexists.
/Erik
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