Paul Plankton's questions

I have a list of IP's such as

35.195.23.184 134.209.172.147 207.90.244.14 179.43.191.98 77.90.22.16 222.95.163.138 95.214.53.91 45.230.66.15 199.45.155.111 5.8.11.202 185.191.126.248 154.83.15.156 71.6.232.28 35.204.124.189 141.98.11.178 64.62.197.44 64.62.197.36 64.62.197.33 185.242.226.99 46.19.69.70 114.33.100.55 95.214.55.79 114.35.57.211 162.191.196.61 87.120.126.85 2.196.195.65 118.163.142.112 80.82.77.202 182.44.10.178 114.38.214.165 175.107.1.178 122.116.134.171 109.205.213.198 178.215.238.69 122.116.158.160 93.174.93.12 147.45.112.17 59.126.25.244 59.126.254.199 40.83.134.151 125.228.162.168 220.134.106.248 45.115.89.120 4.255.98.186 87.120.114.229 45.84.89.3 46.174.191.28 95.214.53.211 141.98.11.175 125.228.214.129 36.139.63.123 180.149.126.8 122.116.183.60 185.82.219.179 165.154.206.35 106.75.146.146 106.75.169.16 59.126.115.226 59.182.82.59 47.91.91.123 34.77.49.75 45.148.10.206 45.156.130.18 87.236.176.150 167.94.145.96 199.45.154.130 205.210.31.30 147.185.132.30 64.62.156.83 35.203.210.49 100.0.161.38 1.34.209.79 

(don't worry about having them posted here, they all have been trapped as aggressive hacking sources by a honeypot.

Now within a bash-shell, I want to reformat this list - the spaces between them have to be replaced by a comma and a space (, ) in order to easily use them in a hosts.deny file. My problem: the normal bash- or sed-replacement always fails with an error "bad substitution". Seems I need to escape the space/comma somehow.

So my question: how do I replace all the spaces in this list by a comma/space-combination?

Thanks!

I'm running an Acer notebook that comes with an Intel WiFi adapter. The included kernel does not support it natively, so I found some separate drivers which are installed via dkms. Unfortunately when calling

modprobe iwlwifi

an error

modprobe: ERROR: could not insert 'iwlwifi': Required key not available

is returned.

I already found a solution to disable scure boot via mokutil, but this does not work for me here - when I do this, loading of the kernel fails at grub boot level and I can't get into it at all.

So...how can I fix that, how can I get my 18.04.5 working with the Wi-Fi 6 AX200 chip?

Thanks!

UPDATE: to all the "I'm so clever in closing questions"-people: my question was NOT answered somewhere else. The solution you linked to suggested to disable secure boot - which doesn't works with newer BIOS versions. Disabling secure boot via MOK prevents Ubuntu from booting at all. So thanks for closing this question while not understanding what really is going on!

I have created a Samba-share which works fine except the fact that the files are not writeable.

The server is an Ubuntu-system with following entry in /etc/samba/smb.conf:

[poddycds]
path = /mnt/hdcd/home/login/poddy/poddydata/cds
public = yes
writeable = yes
read only = no
guest ok = yes
create mask = 0777
directory mask = 0777
browseable = yes
public = yes

The client is a Fedora 21 system with following entry in /etc/fstab:

//192.168.1.244/poddycds          /mnt/poddycds           cifs    guest,uid=1000,gid=1000,rw,noperm,file_mode=0777,dir_mode=0777          0 0

The share is mounted properly to /mnt/poddycds and I can see all files have write permission 8user, group and world) but when I try to write one of the existing files, this fails.

Any idea what could be missing here?

Update: it seems to be a problem of the server configuration, when I connect from a Windows device, I have the same problem. So any idea why the server does not mount it writeable as specified in smb.conf? Or which logfiles could I check to find the reason?