To parse the command output..

[clearguy02]

Hi folks,

I am looking out for some help here. I am working on an email alert
mechanism.

I need to parse the output of "df- k" command and if the capacity is
more than 50%, the output (pritn statement) of the perl script should
print out the whole line that contains the number, 50%.

Example: diskSpaceCheck.pl

Output of df -k on the unix server:
+++++++++++++++++++++
$ df -k
Filesystem kbytes used avail capacity Mounted on
/dev/vx/dsk/rootvol 15493995 981301 14357755 7% /
/proc 0 0 0 0%
/proc
fd 0 0 0 0%
/dev/fd
mnttab 0 0 0 0%
/etc/mnttab
/dev/vx/dsk/proddg/PRODdata01 15728640 8209296 7460600 53%
/oracle/PROD/data01
+++++++++++++++++++++++++++++++++++

Now the output should print out below two lines:
/oracle/PROD/data01 currently has 53%.
The whole line (/dev/vx/dsk/proddg/PRODdata01 15728640
8209296 7460600 53% /oracle/PROD/data01).

Thanks in advance,
CG

 

[DJ Stunks]

Hi folks,

I am looking out for some help here. I am working on an email alert
mechanism.

I need to parse the output of "df- k" command and if the capacity is
more than 50%, the output (pritn statement) of the perl script should
print out the whole line that contains the number, 50%.

Example: diskSpaceCheck.pl

Output of df -k on the unix server:
+++++++++++++++++++++
$ df -k
Filesystem kbytes used avail capacity Mounted on
/dev/vx/dsk/rootvol 15493995 981301 14357755 7% /
/proc 0 0 0 0%
/proc
fd 0 0 0 0%
/dev/fd
mnttab 0 0 0 0%
/etc/mnttab
/dev/vx/dsk/proddg/PRODdata01 15728640 8209296 7460600 53%
/oracle/PROD/data01
+++++++++++++++++++++++++++++++++++

Now the output should print out below two lines:
/oracle/PROD/data01 currently has 53%.
The whole line (/dev/vx/dsk/proddg/PRODdata01 15728640
8209296 7460600 53% /oracle/PROD/data01).

how did you attempt to solve this? in what way is your solution
deficient? have you read the posting guidelines for this group?

-jp

 

[Paul Lalli]

I am looking out for some help here. I am working on an email alert
mechanism.

I need to parse the output of "df- k" command and if the capacity is
more than 50%, the output (pritn statement) of the perl script should
print out the whole line that contains the number, 50%.

Example: diskSpaceCheck.pl

Output of df -k on the unix server:
+++++++++++++++++++++
$ df -k
Filesystem kbytes used avail capacity Mounted on
/dev/vx/dsk/rootvol 15493995 981301 14357755 7% /
/proc 0 0 0 0%
/proc
fd 0 0 0 0%
/dev/fd
mnttab 0 0 0 0%
/etc/mnttab
/dev/vx/dsk/proddg/PRODdata01 15728640 8209296 7460600 53%
/oracle/PROD/data01
+++++++++++++++++++++++++++++++++++

Now the output should print out below two lines:
/oracle/PROD/data01 currently has 53%.
The whole line (/dev/vx/dsk/proddg/PRODdata01 15728640
8209296 7460600 53% /oracle/PROD/data01).

100% untested:

#!/usr/bin/perl
use strict;
use warnings;
for my $line (`df -k`){
if ($line =~ /(\d+)%/ and $1 >= 50){
print $line;
}
}
__END__

Hope this helps,
Paul Lalli

 

[Gunnar Hjalmarsson]

I need to parse the output of "df- k" command

This script, which includes similar parsing, might be useful to you:
http://gunnar.cc/cgi-bin/cvsweb.cgi/misc/diskusage.cgi?cvsroot=gunnar

 

[DJ Stunks]

I need to parse the output of "df- k" command

use Filesys:f(Portable)

-jp

 

[Joe Smith]

for my $line (`df -k`){ ... }

But a single entry can take more than one line.
This happens a lot with the Logical Volume Manager and with long NFS paths.
I use this instead:

$_ = `df -h @ARGV`;
# Look for lines with a single field (no spaces), combine it with next line
s/^(\S+)\n/$1 /mg; # Put /dev/mapper/VolGroup with the rest
foreach my $line (split /\n/,$_) { ... }

-Joe

 

[DJ Stunks]

But a single entry can take more than one line.
This happens a lot with the Logical Volume Manager and with long NFS paths.

just because it word wraps on your console doesn't mean it's using more
than one line.

-jp

 

[Joe Smith]

just because it word wraps on your console doesn't mean it's using more
than one line.

Have you verified that? I have and it is.

On RHEL-ES4, `df -k` puts "/dev/mapper/VolGroup_ID_814-LogVol1" on a
line by itself with "1K-blocks Used Available Use% Mounted on"
on the next line. This is true for cron jobs and for xterm windows
that are 203 columns wide.