1: #!/usr/bin/perl
   2: #
   3: # Sorry for the simplicity of this script, but as a first submission...
   4: #
   5: # Emails/Pages me when a filesystem > 90% full
   6: 
   7: $df=`df -lk 2>/dev/null`;
   8: $fs=`df -lk 2>/dev/null | grep -v used | cut -d'%' -f2 | grep -v denied`;
   9: $full=`df -lk 2>/dev/null | grep -v used | cut -d'%' -f1`;
  10: 
  11: $full =~ s/.*(..\d)$/\1/mg;
  12: 
  13: $fs=~s/\s+/ /g;
  14: $full=~s/\s+/ /g;
  15: 
  16: @fs=split(" ",$fs);
  17: @full=split(" ",$full);
  18: $host=`hostname`;
  19: chomp($host);
  20: $fs=@fs;
  21: chomp($date);
  22: while ($fs)
  23: {$fs=shift(@fs);
  24:  $full=shift(@full);
  25:  chomp($fs);
  26:  chomp($full);
  27:  if ($full > 90)
  28:  {print "Host: $host Filesystem: $fs is ${full}% full!\n";
  29:   @chk=grep(/$fs:$full/,@log);
  30:   undef(@log);
  31:   $chk=@chk;
  32:   close(LOG);
  33:   if ($chk == 0)
  34:   {`mailx -s "$host:$fs is ${full}%" youremail\@host.com <<EOF
  35: $df
  36: EOF
  37: `;
  38:    `mailx -s "$host:$fs is ${full}%" mypager\@pagerhost.com <<EOF
  39: 
  40: EOF
  41: `;
  42:   }
  43:  }
  44: }
  45:

Replies are listed 'Best First'.
RE: Full Filesystem Notification
by Shendal (Hermit) on Jun 30, 2000 at 18:44 UTC
    For what it's worth, I took a look at your code and I've tried to give you a few helpful hints on another way to do it. I've placed my comments inline.

    #!/usr/bin/perl
#
# Sorry for the simplicity of this script, but as a first submission..
+.
#
# Emails/Pages me when a filesystem > 90% full
#

# always use strict
use strict;

# make a variable to easily change some behavior
my($warn_percentage) = 90;

# predeclare our variables (not necessary, but probably a good idea)
my(%df);   # df hash that holds all our information
my($host); # hostname

# Rather than 3 backticks for df, just do it once and parse it with pe
+rl!
# Also, make $fs into an array instead of string then split to array
# Finally, we don't really need $full, since that's just grep /100/,@f
+s
#$df=`df -lk 2>/dev/null`;
#$fs=`df -lk 2>/dev/null | grep -v used | cut -d'%' -f2 | grep -v deni
+ed`;
#$full=`df -lk 2>/dev/null | grep -v used | cut -d'%' -f1`;
foreach (`df -lk 2>/dev/null`) {
    if (/(\b\d+)%\s+(\S+)$/) { $df{$2} = $1; }
}

# removed some string manipulation that isn't needed any longer
#$full =~ s/.*(..\d)$/\1/mg;
#$fs=~s/\s+/ /g;
#$full=~s/\s+/ /g;
#@fs=split(" ",$fs);
#@full=split(" ",$full);

# We can combine this into one statement
#$host=`hostname`;
#chomp($host);
chomp($host = `hostname`);

# this loop changes somewhat
#$fs=@fs;
#chomp($date); # where is $date coming from?

# note that the mailx stuff isn't tested, as I don't have mailx on my 
+system
foreach (keys %df) {
    if ($df{$_} > $warn_percentage) {
    print "Host: $host Filesystem: $_ is $df{$_}% full!\n";
    system("mailx -s \"$host:$_ is $df{$_}%\" youremail\@host.com << /
+dev/null");
    }
}

#while ($fs) {
#    $fs=shift(@fs);
#    $full=shift(@full);
#    chomp($fs);
#    chomp($full);
#    if ($full > 90) {
#    print "Host: $host Filesystem: $fs is ${full}% full!\n";
#    @chk=grep(/$fs:$full/,@log); # not sure what all this log stuff i
+s...
#    undef(@log);
#    $chk=@chk;
#    close(LOG);
#    }
#    if ($chk == 0) {
#    `mailx -s "$host:$fs is ${full}%" youremail\@host.com <<EOF
#$df
#EOF
#`;
#    `mailx -s "$host:$fs is ${full}%" mypager\@pagerhost.com <<EOF
#EOF
#`;
#    }
#}

    [download]
    Hope that helps!
[reply]
[d/l]
      Thanks very much, Shendal! Much appreciated. Actually, I probably should have gone over the code before submitting. FYI here's another version in pure ksh I wrote for a Oracle DBA friend of mine that didn't want to install Perl if you're interested. Bit more condensed.

      Hope I don't get into any trouble for posting shell! =)

      #!/usr/bin/ksh

      pct=90
      x=0

      for filesys in `df -k | awk '{print $1}'`
      do
       x=`expr $x + 1`
       dfline=`df -k | head -$x | tail -1`
       full=`echo $dfline | awk '{print $5}' | sed 's/%//g' | egrep -v capacity`

       if $full -gt pct
       then
       mailx -s "Filesystem: $filesys is ${full}% full!!!" mail@mailhost.com <<EOF
       $dfline
      EOF
       mailx -s "Filesystem: $filesys is ${full}% full!!!" pager@pagerhost.com <<EOF
       $dfline
      EOF

       fi
      done
[reply]
        #!/usr/bin/ksh x=0 for filesys in `df -k | awk '{print $1}'` do x=`expr $x + 1` dfline=`df -k | head -$x | tail -1` full=`echo $dfline | awk '{print $5}' | sed 's/%//g' | egrep -v capacity` if $full -gt 76 then mailx -s "Filesystem: $filesys is ${full}% full!!!" pager@pagerhost.com <<EOF $dfline EOF fi done
[reply]

Back to Craft