Re: [Tutor] Test If File System is mounted in Linux
Dnia piątek, 17 marca 2006 19:22, Bill Campbell napisał: If you're sure it's a Linux system, fine. Like /etc/mtab, this isn't portable. Looking at some of the systems we have here: Fortezza mentioned it the way I assumed he has Linux: If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is But, generally - you are right. Each system has its own rules for accessing mount table. Anyway - this would be a great exercise to make a portable pure-python library to get this information. -- Pawel www.kraszewscy.net ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Test If File System is mounted in Linux
If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is in the list. While I could replicate this with Python, I am curious if there is an easier way. Thank You, Fortezza ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
On Fri, March 17, 2006 1:06 pm, fortezza-pyt wrote: If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is in the list. While I could replicate this with Python, I am curious if there is an easier way. A quick Google search gives this http://bebop.bigasterisk.com/python/docs/MtPython Non standard perhaps but someone seems to have implemented a module that does something like this. -- -NI ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
On Fri, 17 Mar 2006 00:36:35 -0700 fortezza-pyt [EMAIL PROTECTED] wrote: If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is in the list. While I could replicate this with Python, I am curious if there is an easier way. Hi Fortezza, try os.path.ismount() . HTH Michael ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
On Fri, Mar 17, 2006, Michael Lange wrote:
On Fri, 17 Mar 2006 00:36:35 -0700
fortezza-pyt [EMAIL PROTECTED] wrote:
If there a semi-standard way to test if a file system has been mounted
or not using Python? In the Linux command line, I can type mount and
see all mounted file system, and then see if the one I am looking for is
in the list. While I could replicate this with
Python, I am curious if there is an easier way.
Hi Fortezza,
try os.path.ismount() .
That's fine if one knows what the mount points are.
The more general problem is to get a list of mounted file systems.
The most standard way I've found to get a list of mounted systems is to
parse the output of the gdf program from the gnu fileutils compiled with
the program prefix `g' so it's called gdf. The gdf program handles a lot
of the dirty work, and its output is standard regardless of the underlying
system, which you can't say about the system's mount or df commands.
The routine below is one I've used for years (actually I used a perl
version for a long time before switching primarily to python :-).
# This aren't real file systems.
pseudofilesys = \
dict(map((lambda x: (x, 1)), ('none', 'shmfs', 'procfs', 'tmpfs')))
gdf_cols = ('filesys', 'blocks', 'used', 'avail', 'use', 'dir')
def mounted():
'''Get Mounted File Systems'''
df = os.popen('gdf 2/dev/null', 'r')
df.readline() # skip first line
mounted = []
for line in df.readlines():
line = line.strip()
rec = dict(zip(gdf_cols, line.split(None, 5)))
filesys = rec['filesys']
dir = rec.get('dir')
if (
dir and not (filesys.find(':') = 0
or pseudofilesys.get(filesys))
): mounted.append(dir)
df.close()
return mounted
Bill
--
INTERNET: [EMAIL PROTECTED] Bill Campbell; Celestial Systems, Inc.
URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way
FAX:(206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676
``I presume you all know who I am. I am humble Abraham Lincoln. I have been
solicited by many friends to become a candidate for the legistlature. My
politics are short and sweet, like the old woman's dance. I am in favor of
a national bank ... in favor of the internal improvements system, and a
high protective tariff.'' -- Abraham Lincoln, 1832
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Re: [Tutor] Test If File System is mounted in Linux
On 17/03/06, Bill Campbell [EMAIL PROTECTED] wrote: On Fri, Mar 17, 2006, Michael Lange wrote: On Fri, 17 Mar 2006 00:36:35 -0700 fortezza-pyt [EMAIL PROTECTED] wrote: If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is in the list. While I could replicate this with Python, I am curious if there is an easier way. Hi Fortezza, try os.path.ismount() . That's fine if one knows what the mount points are. The more general problem is to get a list of mounted file systems. How about just reading the mtab? That's usually /etc/mtab it should be readable as a user and it means you don't have to rely on any other programs. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
Dnia piątek, 17 marca 2006 18:41, Adam napisał: The more general problem is to get a list of mounted file systems. How about just reading the mtab? That's usually /etc/mtab it should be readable as a user and it means you don't have to rely on any other programs. Or always-up-to-date user readable '/proc/mounts' ? -- Pawel Kraszewski ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
On Fri, Mar 17, 2006, Adam wrote: On 17/03/06, Bill Campbell [EMAIL PROTECTED] wrote: On Fri, Mar 17, 2006, Michael Lange wrote: On Fri, 17 Mar 2006 00:36:35 -0700 fortezza-pyt [EMAIL PROTECTED] wrote: If there a semi-standard way to test if a file system has been mounted or not using Python? In the Linux command line, I can type mount and see all mounted file system, and then see if the one I am looking for is in the list. While I could replicate this with Python, I am curious if there is an easier way. Hi Fortezza, try os.path.ismount() . That's fine if one knows what the mount points are. The more general problem is to get a list of mounted file systems. How about just reading the mtab? That's usually /etc/mtab it should be readable as a user and it means you don't have to rely on any other programs. The words usually, and should are the kickers. In the 24 years I've been making my living on various versions of Unix type systems, I've seen a lot of cases where this type of assumption either fails totally or gets me in trouble because the vendor didn't do it the way they should. This is the reason I started building standard open source tools for all the systems we support (Richard Stallman would probably have said I was creating GNU/Xenix and GNU/OpenServer systems back when we supported many SCO systems :-). My fingers automatically type gfind, gdu, etc., even on Linux systems where I make symbolic links as necessary so I don't have to remember what type of system I'm typing on. One of the basic tenets of the *nix philosophy is ``build on the work of others'', and it's a lot easier to leave figuring out the guts of various systems to the authors of the gnu fileutils than it is to reinvent their work every time I want to do something. Bill -- INTERNET: [EMAIL PROTECTED] Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way FAX:(206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 A fake fortuneteller can be tolerated. But an authentic soothsayer should be shot on sight. Cassandra did not get half the kicking around she deserved. -- R.A. Heinlein ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Test If File System is mounted in Linux
On Fri, Mar 17, 2006, Pawel Kraszewski wrote: Dnia piÄ tek, 17 marca 2006 18:41, Adam napisaÅ: The more general problem is to get a list of mounted file systems. How about just reading the mtab? That's usually /etc/mtab it should be readable as a user and it means you don't have to rely on any other programs. Or always-up-to-date user readable '/proc/mounts' ? If you're sure it's a Linux system, fine. Like /etc/mtab, this isn't portable. Looking at some of the systems we have here: Linux -- systems from Caldera OpenLinux 2.3 through SuSE 10.0, have /proc/mounts and /etc/mtab. FreeBSD 4.8 Stable -- has /proc file system, but no /proc/mounts, and no /etc/mtab (yeah 4.8 is out of date, but it's been up 632 days and I want to see how long it will stay up :-). OS X 10.4.5 (Tiger) -- no /proc/mounts or /etc/fstab SCO OpenServer 5.0.6a -- no /proc/mounts or /etc/fstab All of these systems have the gnu gdf which returns information in the same format. Bill -- INTERNET: [EMAIL PROTECTED] Bill Campbell; Celestial Systems, Inc. URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way FAX:(206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 ``Fix reason firmly in her seat and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there is one, he must more approve of the homage of reason, than that of blindfolded fear.'' --Thomas Jefferson ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
