CFEngine Help: delete_lines and select region

[no-reply]

Forum: CFEngine Help
Subject: delete_lines and select region
Author: jbdenis
Link to topic: https://cfengine.com/forum/read.php?3,26551,26551#msg-26551

Hello everybody,

I'm using CFEngine Core 3.3.4.

Basically I want to remove everything after a specific line in a file. For 
example :


# cat /tmp/myfile
some
garbage
#### CFENGINE ANCHOR
i want to remove this line
this one too
and this one !


Here is my cfengine file :


body common control
{
  bundlesequence  => { example };   
  inputs => { "cfengine_stdlib.cf" };
}

bundle agent example
{
files:
  "/tmp/myfile"
     edit_line => editfile,
     create => "true";
}

bundle edit_line editfile
{
  vars:
    "sdelim"       string => "#### CFENGINE ANCHOR";

  delete_lines:
    ".*"
      select_region => from_line("$(sdelim)");

  # I want to insert my anchor line if it is not present the first time
  insert_lines:
    "$(sdelim)";
}

body select_region from_line(start)
{
    select_start => "$(start)";
    include_start_delimiter => "false";
}


Here is the ouput :


# cf-agent -KI -f ./editfile.cf 
 !! The promised line deletion (.*) could not select an edit region in 
/tmp/myfile (but the delimiters were expected in the file)
 !! The promised line deletion (.*) could not select an edit region in 
/tmp/myfile (but the delimiters were expected in the file)
 -> Edited file /tmp/myfile


And the the file :


some
garbage
#### CFENGINE ANCHOR


That's what I want, but what about the warnings in the cf-agent run ? If this 
is a normal behaviour, how can I not print it ? If I run it again, it's still 
here (plus one) :


# cf-agent -KI -f ./editfile.cf 
 !! The promised line deletion (.*) could not select an edit region in 
/tmp/myfile (but the delimiters were expected in the file)
 !! The promised line deletion (.*) could not select an edit region in 
/tmp/myfile (but the delimiters were expected in the file)
 !! The promised line deletion (.*) could not select an edit region in 
/tmp/myfile (but the delimiters were expected in the file)


Any suggestions ?

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