Month: July 2008

For some reason standard ICMP utilities (e.g. ‘ping’) do not support formatting the output in a way that makes it easy to do further processing. The following Perl script should work on any Mac or Linux system. It wraps the standard ping command and formats the output as comma separated values that can be directly imported into for instance Microsoft Excel.


#!/usr/bin/perl

while() {
 if($_ =~ m/.*seq=(\d+).*time=([\.0-9]*).*/) {
  my($s,$m,$h,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
  my $dt = sprintf("%4d-%02d-%02d,%02d:%02d:%02d", $year+1900, $mon+1, $mday, $h, $m, $s);
  print "$dt,$1,$2\n"
 }
}


Download script.

I have been looking at Git for version control but so far I am using SVN. Whenever I set up a new Rails application and add it to my version control system I do the following to ignore files that should not be version controlled.

1. Copy the entire project to a folder within my SVN working folder hierarchy
2. Remove all superfluous files:


rm tmp/*/*
rm log/*
rm `find . -name '.DS_Store'`
rm `find . -name '*.sqlite3'`
rake db:migrate VERSION=0


3. Add all files (svn add *)
4. Set properties on the Rails folders to ignore certain files


svn propset svn:ignore "*.log" log/
svn propset svn:ignore "*" tmp/sessions tmp/cache tmp/sockets
svn propset svn:ignore "*.rb\n*.sqlite3" db
svn propset svn:ignore ".DS_Store" .


5. Make an initial commit (svn ci -m “Initial import”)