Pass Python variable inside command with Paramiko [duplicate]

Question

With this command, I want to save an output of the smartctl command of the sda drive.

Now, since I use RAID, I have multiple drives, not just sda.

The following command works fine:

stdin, stdout, stderr = ssh.exec_command('/bin/su root -c "smartctl -a /dev/sda > /tmp/smartctl_output1"', get_pty=True) # ORIGINAL

I want to achieve that I pass local Python variable "DISK" containing sda, sdb, sdc and so on instead only static value.

The following line produces error:

stdin, stdout, stderr = ssh.exec_command('/bin/su root -c "smartctl -a /dev/" + DISK + " > /tmp/" + DISK', get_pty=True)

Martin Prikryl · Accepted Answer · 2019-10-16 10:22:42Z

1

Your question has nothing to do with Paramiko.

It's just a trivial concatenation of strings in Python:

ssh.exec_command(
     '/bin/su root -c "smartctl -a /dev/' + DISK + ' > /tmp/' + DISK + '"',
     get_pty=True)

answered Apr 11, 2018 at 14:58

Martin Prikryl

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