[brlug-general] [SAGE] df breaks scripts

[John Hebert]

Why not just put "alias df='df -P'" in your scripts instead of a wrapper?

----- Original Message ----
From: Dustin Puryear <dustin at puryear-it.com>
To: general at brlug.net
Sent: Monday, February 4, 2008 2:59:02 PM
Subject: Re: [brlug-general] [SAGE] df breaks scripts


This 
may 
be 
true: 
"People 
who 
shortened 
device 
to 
dev 
might 
not 
think 
that 
'/dev/mapper/VolGroup00-LogVol00' 
is 
a 
sane 
device 
name." 
However, 
that's 
a 
default 
that 
Red 
Hat/CentOS 
uses 
when 
doing 
LVM 
so 
it 
would 
be 
nice 
if 
the 
df 
on 
Red 
Hat/CentOS 
handled 
it 
well. 
:)

The 
problem 
with 
Filesys::DiskSpace 
is 
that 
it 
doesn't 
address 
the 
core 
issue 
here: 
Most 
existing 
scripts 
expect 
df 
to 
act 
in 
a 
certain 
way..

So 
far, 
the 
only 
solution 
we've 
been 
able 
to 
come 
up 
with 
is 
a 
wrapper 
for 
df 
that 
forces 
-P.

--
Puryear 
Information 
Technology, 
LLC
Baton 
Rouge, 
LA 
* 
225-706-8414
http://www.puryear-it.com

Author, 
"Best 
Practices 
for 
Managing 
Linux 
and 
UNIX 
Servers"
  
 
http://www.puryear-it.com/pubs/linux-unix-best-practices

Identity 
Management, 
LDAP, 
and 
Linux 
Integration


willhill 
wrote:
> 
People 
who 
shortened 
device 
to 
dev 
might 
not 
think 
> 
that 
"/dev/mapper/VolGroup00-LogVol00" 
is 
a 
sane 
device 
name.  
> 
> 
Have 
you 
looked 
at 
perl's 
Filesys::DiskSpace?  
I 
ran 
into 
it 
here:
> 
> 
http://www.cyberciti.biz/tips/howto-write-perl-script-to-monitor-disk-space.html
> 
> 
A 
similar 
dissaster 
happened 
to 
g77, 
where 
the 
print 
output 
was 
automatically 
> 
line 
broken 
to 
80 
columns.  
This 
broke 
every 
loop 
formated 
code.  
I'm 
not 
> 
sure 
how 
that 
one 
turned 
out 
because 
I've 
done 
everything 
in 
C 
since.
> 
> 
On 
Monday 
04 
February 
2008 
10:43 
am, 
Dustin 
Puryear 
wrote:
>> 
But 
I 
think 
you're 
missing 
the 
point. 
Since 
days 
of 
yore, 
people 
have
>> 
generally 
used 
'df' 
with 
the 
assumption 
that 
it 
had 
sane 
output 
by
>> 
default. 
;)
> 
> 
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> 
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mailing 
list
> 
General at brlug.net
> 
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_______________________________________________
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