Get a list of all mounted file systems in Linux with python

Question

I am planning to automate a process of cleaning file systems in Linux using a set of scripts in Shell, Python and I'll create a simple dashboard using Node.js to allow a more visual approach.

I have a script in Shell which already cleans a file system in a specific server - but I have to login and then issue this command. Now I am proceeding with a dashboard in HTML/CSS/JS to visualize all servers which are having space problems.

My idea is: create a Python scrip to login and get a list of filesystems and its usage and update a single JSON file, then, my dashboard uses this JSON to feed the screen.

My question is how to get the list of file system in Linux and its usage?

You want to login using SSH or you want to login into the webapp ? — Dan Ionescu, Mar 18 '17 at 10:38
You can use paramiko client to log in to a remote ssh and run "df" command inside to get information about all partitions — Dan Ionescu, Mar 18 '17 at 10:53
Please take a look to this [answer](http://stackoverflow.com/questions/4260116/find-size-and-free-space-of-the-filesystem-containing-a-given-file). — Juan Antonio, Mar 18 '17 at 10:57
@DanIonescu, who will perform this ssh will be a python script, I'll run this command from my server and the Python script will perform this SSH connection to me. — Ricardo Silva, Mar 18 '17 at 11:17

Dan Ionescu · Accepted Answer · 2017-03-18T11:47:58.283

To remote connect to a ssh and retrive a list with the filesystems and usage you can use paramiko SSH client and df command like this:

To install paramiko using pip issue:

sudo pip install paramiko

The regex module should be default installed

import paramiko, re

server = "your_server_ip_or_name"
username = "your_ssh_user"
password = "your_ssh_password"

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(server, username=username, password=password)
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command("df")

filesystems = []
for line in ssh_stdout.readlines()[1:]:
    line = re.sub('\s+', ' ', line).strip()
    parameters = line.split(' ')
    usage_percent =  re.findall(r'\d+', parameters[4])
    filesystems.append({'name' : parameters[0], 'usage' : usage_percent[0]})

print filesystems

It will result in a list of dictionaries containing keys name, and usage like in this example:

[{'usage': u'17%', 'name': u'/dev/root'}, {'usage': u'0%', 'name': u'devtmpfs'}, {'usage': u'0%', 'name': u'tmpfs'}, {'usage': u'9%', 'name': u'tmpfs'}, {'usage': u'1%', 'name': u'tmpfs'}, {'usage': u'0%', 'name': u'tmpfs'}, {'usage': u'31%', 'name': u'/dev/mmcblk0p6'}, {'usage': u'0%', 'name': u'tmpfs'}]

score -1 · Answer 2 · answered Mar 18 '17 at 12:24

-1

You can use command

df

Provides an option to display sizes in Human Readable formats (e.g., 1K 1M 1G) by using ‘-h’.This is the most common command but you can also check du and di. di in fact provides even more info than df.

answered Mar 18 '17 at 12:24

A D

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I know the command, I need to know how to execute it with Python and receive a list to iterate over it. – Ricardo Silva Mar 18 '17 at 13:25
Ok, Glad to see you got what you wanted above. You can also consider fabric if you want to connect and get info from multiple nodes http://www.fabfile.org/ – A D Mar 18 '17 at 18:05
Thank you A D. I will check it out! – Ricardo Silva Mar 19 '17 at 18:27

Get a list of all mounted file systems in Linux with python

2 Answers2