I simply want to capture the free disc space in a variable so that I
can compare changes. I'm aware of a few commands like "df -h" or "du -
k", but I can't figure out how to capture those values as a variable.
I also looked at os.statvfs(), but that output doesn't seem to make
any sense at all to me, knowing the size of the disc.
Thanks for your help!
R.D. 9 3093
On Feb 15, 7:10 pm, DataSmash <r...@new.rr.co mwrote:
I simply want to capture the free disc space in a variable so that I
can compare changes. I'm aware of a few commands like "df -h" or "du -
k", but I can't figure out how to capture those values as a variable.
I also looked at os.statvfs(), but that output doesn't seem to make
any sense at all to me, knowing the size of the disc.
Thanks for your help!
R.D.
import os, statvfs
s = os.statvfs(".")
freebytes = s[statvfs.F_BSIZE] * s[statvfs.F_BAVAI L]
HTH,
Chris
Chris wrote:
On Feb 15, 7:10 pm, DataSmash <r...@new.rr.co mwrote:
>I simply want to capture the free disc space in a variable so that I can compare changes. I'm aware of a few commands like "df -h" or "du - k", but I can't figure out how to capture those values as a variable. I also looked at os.statvfs(), but that output doesn't seem to make any sense at all to me, knowing the size of the disc. Thanks for your help! R.D.
import os, statvfs
s = os.statvfs(".")
freebytes = s[statvfs.F_BSIZE] * s[statvfs.F_BAVAI L]
Is it worth distinguishing free bytes from available bytes? I've never
seen them differ, and I'm not sure how they ever would...
import os
import statvfs
def free_bytes(path ):
stats = os.statvfs(path )
return stats[statvfs.F_BSIZE] * stats[statvfs.F_BFREE]
def avail_bytes(pat h):
stats = os.statvfs(path )
return stats[statvfs.F_BSIZE] * stats[statvfs.F_BAVAI L]
if __name__ == '__main__':
import sys
for path in sys.argv[1:]:
print "%s:" % path,
print "%dK free," % (free_bytes(pat h) / 1024),
print "%dK available" % (avail_bytes(pa th) / 1024)
On Feb 15, 1:32 pm, Jeff Schwab <j...@schwabcen ter.comwrote:
Chris wrote:
On Feb 15, 7:10 pm, DataSmash <r...@new.rr.co mwrote:
I simply want to capture the free disc space in a variable so that I
can compare changes. I'm aware of a few commands like "df -h" or "du -
k", but I can't figure out how to capture those values as a variable.
I also looked at os.statvfs(), but that output doesn't seem to make
any sense at all to me, knowing the size of the disc.
Thanks for your help!
R.D.
import os, statvfs
s = os.statvfs(".")
freebytes = s[statvfs.F_BSIZE] * s[statvfs.F_BAVAI L]
Is it worth distinguishing free bytes from available bytes? I've never
seen them differ, and I'm not sure how they ever would...
import os
import statvfs
def free_bytes(path ):
stats = os.statvfs(path )
return stats[statvfs.F_BSIZE] * stats[statvfs.F_BFREE]
def avail_bytes(pat h):
stats = os.statvfs(path )
return stats[statvfs.F_BSIZE] * stats[statvfs.F_BAVAI L]
if __name__ == '__main__':
import sys
for path in sys.argv[1:]:
print "%s:" % path,
print "%dK free," % (free_bytes(pat h) / 1024),
print "%dK available" % (avail_bytes(pa th) / 1024)
Chris,
Much thanks. That's just what I need.
Jeff,
Not sure what's taking up the "available" space, but it's about 12GB
on my system.
Interesting.
Thanks.
DataSmash wrote:
On Feb 15, 1:32 pm, Jeff Schwab <j...@schwabcen ter.comwrote:
>Chris wrote:
>>On Feb 15, 7:10 pm, DataSmash <r...@new.rr.co mwrote: I simply want to capture the free disc space in a variable so that I can compare changes. I'm aware of a few commands like "df -h" or "du - k", but I can't figure out how to capture those values as a variable. I also looked at os.statvfs(), but that output doesn't seem to make any sense at all to me, knowing the size of the disc. Thanks for your help! R.D. import os, statvfs s = os.statvfs(".") freebytes = s[statvfs.F_BSIZE] * s[statvfs.F_BAVAI L]
Is it worth distinguishing free bytes from available bytes? I've never seen them differ, and I'm not sure how they ever would...
import os import statvfs
def free_bytes(path ): stats = os.statvfs(path ) return stats[statvfs.F_BSIZE] * stats[statvfs.F_BFREE]
def avail_bytes(pat h): stats = os.statvfs(path ) return stats[statvfs.F_BSIZE] * stats[statvfs.F_BAVAI L]
if __name__ == '__main__': import sys for path in sys.argv[1:]: print "%s:" % path, print "%dK free," % (free_bytes(pat h) / 1024), print "%dK available" % (avail_bytes(pa th) / 1024)
Chris,
Much thanks. That's just what I need.
Jeff,
Not sure what's taking up the "available" space, but it's about 12GB
on my system.
Interesting.
Available space is how much you can actually access as a non-root user.
Apparently (thank you Jean-Paul), space can be reserved for superuser
use only; such space is "free," but not "available. "
I'm not sure how superuser-only space would be reserved in the first
place. I don't see anything relevant in the fdisk man page.
Jeff Schwab wrote:
I'm not sure how superuser-only space would be reserved in the first
place. I don't see anything relevant in the fdisk man page.
man mkfs
:)
Christian
In article <iu************ *************** ***@comcast.com >,
Jeff Schwab <je**@schwabcen ter.comwrote:
Available space is how much you can actually access as a non-root user.
Apparently (thank you Jean-Paul), space can be reserved for superuser
use only; such space is "free," but not "available. "
I'm not sure how superuser-only space would be reserved in the first
place. I don't see anything relevant in the fdisk man page.
Look at mkfs.<whatever-your-filesystem-is>
-M-
Jeff Schwab wrote:
I'm not sure how superuser-only space would be reserved in the first
place. I don't see anything relevant in the fdisk man page.
The UFS and ext2 filesystem space allocation routines become very
inefficient when free space gets too low, so for regular uses the
filesystem is considered full before that threshold is reached. You can
adjust the threshold setting (amon others) with tunefs.
Root uid processes can continue to use disk space after that point so
that various daemon processes don't stop, and so that recovery actions
can be taken.
regards
Steve
--
Steve Holden +1 571 484 6266 +1 800 494 3119
Holden Web LLC http://www.holdenweb.com/
Steve Holden wrote:
Jeff Schwab wrote:
>I'm not sure how superuser-only space would be reserved in the first place. I don't see anything relevant in the fdisk man page.
The UFS and ext2 filesystem space allocation routines become very
inefficient when free space gets too low, so for regular uses the
filesystem is considered full before that threshold is reached. You can
adjust the threshold setting (amon others) with tunefs.
Live and learn. I've been using primarily reiserfs for a while now,
which may be why my free blocks always == available blocks.
Root uid processes can continue to use disk space after that point so
that various daemon processes don't stop, and so that recovery actions
can be taken.
DataSmash wrote:
I simply want to capture the free disc space in a variable so that I
can compare changes. I'm aware of a few commands like "df -h" or "du -
k", but I can't figure out how to capture those values as a variable.
I also looked at os.statvfs(), but that output doesn't seem to make
any sense at all to me, knowing the size of the disc.
Thanks for your help!
R.D.
You could use the subprocess module to capture the output
of your disk usage commands.
--
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