GNU bug report logs - #6511
df output difficult to parse

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Package: coreutils;

Reported by: Valerio Pachera <sirio81 <at> gmail.com>

Date: Fri, 25 Jun 2010 16:00:04 UTC

Severity: wishlist

Found in version 8.5

Done: Pádraig Brady <P <at> draigBrady.com>

Bug is archived. No further changes may be made.

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Report forwarded to owner <at> debbugs.gnu.org, bug-coreutils <at> gnu.org:
bug#6511; Package gnu coreutils. (Fri, 25 Jun 2010 16:00:05 GMT) Full text and rfc822 format available.

Acknowledgement sent to Valerio Pachera <sirio81 <at> gmail.com>:
New bug report received and forwarded. Copy sent to bug-coreutils <at> gnu.org. (Fri, 25 Jun 2010 16:00:05 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Valerio Pachera <sirio81 <at> gmail.com>
To: submit <at> debbugs.gnu.org
Subject: df output difficult to parse
Date: Fri, 25 Jun 2010 17:43:22 +0200
Package: GNU coreutils
Version: 8.5

Severity: wishlist

Description:
I'm trying to parse di output of df command to check how much free
space is left on my disks.
I need to check this by a script.
The problem is that, when the device name is long, we get a new line
in the output (see example below).
It's difficult then have data relate with the device name or mount
poiunt usign grep and awk.

Proposed Solution:
simply add an option to not wrap the output text.

File system           Dim. Usati Disp. Uso% Montato su
/dev/mapper/VolGroup00-testing
                      9,2G  3,3G  5,5G  38% /
tmpfs                 1,5G     0  1,5G   0% /lib/init/rw
udev                   10M  224K  9,8M   3% /dev
tmpfs                 1,5G   12K  1,5G   1% /dev/shm
/dev/mapper/VolGroup00-dati
                      120G   77G   38G  68% /mnt/dati
/dev/mapper/VolGroup00-opt
                      5,0G  963M  3,8G  21% /opt
/dev/mapper/VolGroup00-var
                      5,0G  974M  3,8G  21% /var
fileserver:/pubblica  1,4T  579G  722G  45% /media/pubblica
proxy:/mnt/dati/ftp   9,8G  7,3G  2,0G  79% /media/ftp
/dev/sdb1             977M  852M  125M  88% /media/VALERIO


###### trying to extract used % ######

$ df -h /dev/mapper/VolGroup00-dati  | awk '{print $4}'
Usati

68%


$ df -h /dev/sdb1 | awk '{print $4}' | tr -d %
Usati
125M


Ad you can see, the colum 4 is not the same (used% in the first case,
Total space in the second).

Thank you




Information forwarded to owner <at> debbugs.gnu.org, bug-coreutils <at> gnu.org:
bug#6511; Package coreutils. (Fri, 25 Jun 2010 21:11:02 GMT) Full text and rfc822 format available.

Message #8 received at 6511 <at> debbugs.gnu.org (full text, mbox):

From: Bob Proulx <bob <at> proulx.com>
To: Valerio Pachera <sirio81 <at> gmail.com>
Cc: 6511 <at> debbugs.gnu.org
Subject: Re: bug#6511: df output difficult to parse
Date: Fri, 25 Jun 2010 15:09:56 -0600
Valerio Pachera wrote:
> I'm trying to parse di output of df command to check how much free
> space is left on my disks.  I need to check this by a script.  The
> problem is that, when the device name is long, we get a new line in
> the output (see example below).  It's difficult then have data
> relate with the device name or mount poiunt usign grep and awk.

Thank you for the report.  That is a nuisance!

> Proposed Solution:
> simply add an option to not wrap the output text.

Your request has been considered, found useful and a new option has
been added to df to enable this format.  Please use the -P option.
That will put all of the output on one line.

  $ df -Ph /dev/mapper/VolGroup00-dati  | awk '{print $4}'

       -P, --portability
              use the POSIX output format

Please find this option already installed on your system.  I am so
glad that we could so quickly add this option for you! :-)

Bob




Information forwarded to owner <at> debbugs.gnu.org, bug-coreutils <at> gnu.org:
bug#6511; Package coreutils. (Fri, 25 Jun 2010 21:27:02 GMT) Full text and rfc822 format available.

Message #11 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Davide Brini <dave_br <at> gmx.com>
To: bug-coreutils <at> gnu.org
Cc: 6511 <at> debbugs.gnu.org
Subject: Re: bug#6511: df output difficult to parse
Date: Fri, 25 Jun 2010 22:13:45 +0100
On Friday 25 June 2010, Valerio Pachera wrote:

> Package: GNU coreutils
> Version: 8.5
> 
> Severity: wishlist
> 
> Description:
> I'm trying to parse di output of df command to check how much free
> space is left on my disks.
> I need to check this by a script.
> The problem is that, when the device name is long, we get a new line
> in the output (see example below).
> It's difficult then have data relate with the device name or mount
> poiunt usign grep and awk.
> 
> Proposed Solution:
> simply add an option to not wrap the output text.
> 
> File system           Dim. Usati Disp. Uso% Montato su
> /dev/mapper/VolGroup00-testing
>                       9,2G  3,3G  5,5G  38% /
> tmpfs                 1,5G     0  1,5G   0% /lib/init/rw
> udev                   10M  224K  9,8M   3% /dev
> tmpfs                 1,5G   12K  1,5G   1% /dev/shm
> /dev/mapper/VolGroup00-dati
>                       120G   77G   38G  68% /mnt/dati
> /dev/mapper/VolGroup00-opt
>                       5,0G  963M  3,8G  21% /opt
> /dev/mapper/VolGroup00-var
>                       5,0G  974M  3,8G  21% /var
> fileserver:/pubblica  1,4T  579G  722G  45% /media/pubblica
> proxy:/mnt/dati/ftp   9,8G  7,3G  2,0G  79% /media/ftp
> /dev/sdb1             977M  852M  125M  88% /media/VALERIO
> 
> 
> ###### trying to extract used % ######
> 
> $ df -h /dev/mapper/VolGroup00-dati  | awk '{print $4}'
> Usati
> 
> 68%
> 
> 
> $ df -h /dev/sdb1 | awk '{print $4}' | tr -d %
> Usati
> 125M
> 
> 
> Ad you can see, the colum 4 is not the same (used% in the first case,
> Total space in the second).

Have a look at the -P option.

-- 
D.




Information forwarded to owner <at> debbugs.gnu.org, bug-coreutils <at> gnu.org:
bug#6511; Package coreutils. (Fri, 25 Jun 2010 21:27:02 GMT) Full text and rfc822 format available.

Reply sent to Pádraig Brady <P <at> draigBrady.com>:
You have taken responsibility. (Thu, 24 Mar 2011 00:15:03 GMT) Full text and rfc822 format available.

Notification sent to Valerio Pachera <sirio81 <at> gmail.com>:
bug acknowledged by developer. (Thu, 24 Mar 2011 00:15:03 GMT) Full text and rfc822 format available.

Message #19 received at 6511-done <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: 7157-done <at> debbugs.gnu.org, 6511-done <at> debbugs.gnu.org
Subject: df no longer wraps lines
Date: Thu, 24 Mar 2011 00:11:40 +0000
Since I've just changed df to no longer split
entries with long device names over two lines
(since it now aligns columns consistently),
I'm closing these.

cheers,
Pádraig




bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Thu, 21 Apr 2011 11:24:05 GMT) Full text and rfc822 format available.

This bug report was last modified 14 years and 84 days ago.

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