Aleksandar Pavić's questions

I have exhausted all things that I found online trying to fix following on ubuntu 22.04

#apt install libpcre2-dev
  The following packages have unmet dependencies:
     libpcre2-dev : Depends: libpcre2-8-0 (= 10.39-3ubuntu0.1) but 10.40-1+ubuntu21.10.1+deb.sury.org+1 is to be installed
                    Depends: libpcre2-16-0 (= 10.39-3ubuntu0.1) but 10.40-1+ubuntu21.10.1+deb.sury.org+1 is to be installed
                    Depends: libpcre2-32-0 (= 10.39-3ubuntu0.1) but 10.40-1+ubuntu21.10.1+deb.sury.org+1 is to be installed
    E: Unable to correct problems, you have held broken packages.

Apparently problem is due to dist-upgrade issue from 21.10.

What I have tried so far:

apt upgrade
apt install -f libpcre2-dev
apt autoclean
apt --fix-broken install

Also here's the output of

apt-cache policy libpcre2-8-0
libpcre2-8-0:
  Installed: 10.40-1+ubuntu21.10.1+deb.sury.org+1
  Candidate: 10.40-1+ubuntu21.10.1+deb.sury.org+1
  Version table:
 *** 10.40-1+ubuntu21.10.1+deb.sury.org+1 100
        100 /var/lib/dpkg/status
     10.39-3ubuntu0.1 500
        500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu jammy-security/main amd64 Packages
     10.39-3build1 500
        500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages

Which I am not sure how to use...?

So, on one of our servers (and we have 154), we saw this log entry:

Feb 21 00:00:03 vps-442 fstrim[3162507]: /boot/efi: 97.8 MiB (102542848 bytes) trimmed on /dev/sda15
Feb 21 00:00:03 vps-442 fstrim[3162507]: /: 15.6 GiB (16687521792 bytes) trimmed on /dev/sda1
Feb 21 00:00:03 vps-442 systemd[1]: fstrim.service: Succeeded.
Feb 21 00:00:03 vps-442 systemd[1]: Finished Discard unused blocks on filesystems from /etc/fstab

And we have corrupted and missing files on that system!

Is it safe to turn off fstrim on vps server service?

Ubuntu 20.04 only lets me exit right screen on exactly matching pixel coordinates where hortizontal screen is placed. (Red square)

It is very frustrating when one monitor is vertical and other horizontal...

Is there some way to make monitor always leave screen when moved to left corner?

If I restart extension Ubuntu Appindicators, then only one icon stays.

Ubuntu is 21.10 and Viber is 16.1.0.37

If I grep Viber in processes, situation is same, before and after restarting appindicators extension...

root@mypc:/home/user# ps -afx | grep Vib
  13244 ?        SLl    0:01  |   \_ /opt/viber/Viber
  13264 ?        S      0:00  |       \_ /opt/viber/libexec/QtWebEngineProcess --type=zygote --no-zygote-sandbox --application-name=ViberPC --webengine-schemes=qrc:sLV --lang=en-US
  13265 ?        S      0:00  |       \_ /opt/viber/libexec/QtWebEngineProcess --type=zygote --application-name=ViberPC --webengine-schemes=qrc:sLV --lang=en-US
  13267 ?        S      0:00  |           \_ /opt/viber/libexec/QtWebEngineProcess --type=zygote --application-name=ViberPC --webengine-schemes=qrc:sLV --lang=en-US
  13313 pts/0    S+     0:00  |                   \_ grep --color=auto Vib

I was upgrading from 20.10 to 21.04 and during setup some prompt popped-out asking me for keyboard shortcut for input switch, and I have choosen (Left Shift + Left Ctrl), and now I can't find it anywhere to change!

On shortcut settings, there is no such (Left Shift + Left Ctrl) shortcut, nothing left/right.

You can only see it under region settings.

I have Audioquest Dragonfly Black, v1.5

It says on their website, when light is blue, it's registered on 48 khz when light is green it's 44.1 khz

When I plug it on laptop under windows, it's blue light, but when I plug it in the same laptop under Ubuntu 20.04 it's green light.

Any ideas how to get it to perform at 48k in Ubuntu 20.04 ?

After installing virtualmin, opendkim installation (apt install opendkim opendkim-tools) fails in a following way:

Do you want to continue? [Y/n] 
Setting up opendkim (2.11.0~alpha-11build1) ...
Job for opendkim.service failed because a timeout was exceeded.
See "systemctl status opendkim.service" and "journalctl -xe" for details.
invoke-rc.d: initscript opendkim, action "start" failed.
● opendkim.service - OpenDKIM DomainKeys Identified Mail (DKIM) Milter
   Loaded: loaded (/lib/systemd/system/opendkim.service; enabled; vendor preset: enabled)
   Active: activating (auto-restart) (Result: timeout) since Sun 2020-08-02 09:45:05 EEST; 9ms ago
     Docs: man:opendkim(8)
           man:opendkim.conf(5)
           man:opendkim-genkey(8)
           man:opendkim-genzone(8)
           man:opendkim-testadsp(8)
           man:opendkim-testkey
           http://www.opendkim.org/docs.html
dpkg: error processing package opendkim (--configure):
 installed opendkim package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 opendkim
E: Sub-process /usr/bin/dpkg returned an error code (1)

anyone has idea how can I remove this Snap related fake drvies from double commander?

They are not present in Files 3.14

Here is output of lsblk -f

NAME   FSTYPE  LABEL UUID                                 MOUNTPOINT
loop1  squashf                                            /snap/phpstorm/54
sdd                                                       
├─sdd2 ext4          1ba9d0a0-9832-403e-aeed-c4c4836edd18 
├─sdd3 swap          efd53592-0fd7-47bf-b52c-c0a285a1712f 
└─sdd1 vfat          D3F4-44C8                            
sdb                                                       
├─sdb2                                                    
└─sdb5 ntfs          B2E20D7A46C0E68B                     
loop4  squashf                                            /snap/phpstorm/57
loop2  squashf                                            /snap/core/5548
loop0  squashf                                            /snap/phpstorm/61
sdc    ext4    Data1 beb8660b-e698-4b5c-84cc-923ab4b97384 /media/aleksandar/Data
sda                                                       
├─sda2 ext4          37a7338d-efc9-4837-9e49-4dc88d463e44 /
├─sda3 swap          739d67c2-2f13-479f-8a6d-1fbbde716370 [SWAP]
└─sda1 vfat          61FF-05B5                            /boot/efi
loop5  squashf                                            /snap/core/5662
loop3  squashf                                            /snap/core/5742

and output of losetup

NAME       SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE
/dev/loop1         0      0         1  1 /var/lib/snapd/snaps/phpstorm_54.snap
/dev/loop4         0      0         1  1 /var/lib/snapd/snaps/phpstorm_57.snap
/dev/loop2         0      0         1  1 /var/lib/snapd/snaps/core_5548.snap
/dev/loop0         0      0         1  1 /var/lib/snapd/snaps/phpstorm_61.snap
/dev/loop5         0      0         1  1 /var/lib/snapd/snaps/core_5662.snap
/dev/loop3         0      0         1  1 /var/lib/snapd/snaps/core_5742.snap

UFW was not enabled after startup I have tried everything, and eventually put it in rc.local ufw enable, and now it's enabled after reboot.

This is output of uwf status:

ufw status
Status: active

To                         Action      From
--                         ------      ----
80                         ALLOW       Anywhere                  
443                        ALLOW       Anywhere                  
587                        ALLOW       Anywhere                  
465                        ALLOW       Anywhere                  
80 (v6)                    ALLOW       Anywhere (v6)             
443 (v6)                   ALLOW       Anywhere (v6)             
587 (v6)                   ALLOW       Anywhere (v6)             
465 (v6)                   ALLOW       Anywhere (v6)     

And this is iptables -L -v

root@host:~# iptables -L -v
Chain INPUT (policy DROP 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
 1288  308K ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED
   52  3436 ACCEPT     all  --  lo     any     anywhere             anywhere            
  177 32280 INPUT_direct  all  --  any    any     anywhere             anywhere            
  177 32280 INPUT_ZONES_SOURCE  all  --  any    any     anywhere             anywhere            
  177 32280 INPUT_ZONES  all  --  any    any     anywhere             anywhere            
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere            
    0     0 DROP       all  --  any    any     anywhere             anywhere             ctstate INVALID
  163 31492 REJECT     all  --  any    any     anywhere             anywhere             reject-with icmp-host-prohibited
    0     0 ufw-before-logging-input  all  --  any    any     anywhere             anywhere            
    0     0 ufw-before-input  all  --  any    any     anywhere             anywhere            
    0     0 ufw-after-input  all  --  any    any     anywhere             anywhere            
    0     0 ufw-after-logging-input  all  --  any    any     anywhere             anywhere            
    0     0 ufw-reject-input  all  --  any    any     anywhere             anywhere            
    0     0 ufw-track-input  all  --  any    any     anywhere             anywhere            

Chain FORWARD (policy DROP 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED
    0     0 ACCEPT     all  --  lo     any     anywhere             anywhere            
    0     0 FORWARD_direct  all  --  any    any     anywhere             anywhere            
    0     0 FORWARD_IN_ZONES_SOURCE  all  --  any    any     anywhere             anywhere            
    0     0 FORWARD_IN_ZONES  all  --  any    any     anywhere             anywhere            
    0     0 FORWARD_OUT_ZONES_SOURCE  all  --  any    any     anywhere             anywhere            
    0     0 FORWARD_OUT_ZONES  all  --  any    any     anywhere             anywhere            
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere            
    0     0 DROP       all  --  any    any     anywhere             anywhere             ctstate INVALID
    0     0 REJECT     all  --  any    any     anywhere             anywhere             reject-with icmp-host-prohibited
    0     0 ufw-before-logging-forward  all  --  any    any     anywhere             anywhere            
    0     0 ufw-before-forward  all  --  any    any     anywhere             anywhere            
    0     0 ufw-after-forward  all  --  any    any     anywhere             anywhere            
    0     0 ufw-after-logging-forward  all  --  any    any     anywhere             anywhere            
    0     0 ufw-reject-forward  all  --  any    any     anywhere             anywhere            
    0     0 ufw-track-forward  all  --  any    any     anywhere             anywhere            

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
 1546  168K OUTPUT_direct  all  --  any    any     anywhere             anywhere            
 1482  164K ufw-before-logging-output  all  --  any    any     anywhere             anywhere            
 1482  164K ufw-before-output  all  --  any    any     anywhere             anywhere            
  372 26928 ufw-after-output  all  --  any    any     anywhere             anywhere            
  372 26928 ufw-after-logging-output  all  --  any    any     anywhere             anywhere            
  372 26928 ufw-reject-output  all  --  any    any     anywhere             anywhere            
  372 26928 ufw-track-output  all  --  any    any     anywhere             anywhere            

Chain FORWARD_IN_ZONES (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 FWDI_public  all  --  +      any     anywhere             anywhere            [goto] 

Chain FORWARD_IN_ZONES_SOURCE (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD_OUT_ZONES (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 FWDO_public  all  --  any    +       anywhere             anywhere            [goto] 

Chain FORWARD_OUT_ZONES_SOURCE (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD_direct (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDI_public (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 FWDI_public_log  all  --  any    any     anywhere             anywhere            
    0     0 FWDI_public_deny  all  --  any    any     anywhere             anywhere            
    0     0 FWDI_public_allow  all  --  any    any     anywhere             anywhere            

Chain FWDI_public_allow (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDI_public_deny (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDI_public_log (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDO_public (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 FWDO_public_log  all  --  any    any     anywhere             anywhere            
    0     0 FWDO_public_deny  all  --  any    any     anywhere             anywhere            
    0     0 FWDO_public_allow  all  --  any    any     anywhere             anywhere            

Chain FWDO_public_allow (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDO_public_deny (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain FWDO_public_log (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain INPUT_ZONES (1 references)
 pkts bytes target     prot opt in     out     source               destination         
  177 32280 IN_public  all  --  +      any     anywhere             anywhere            [goto] 

Chain INPUT_ZONES_SOURCE (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain INPUT_direct (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports ssh match-set fail2ban-sshd src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports webmin match-set fail2ban-webmin-auth src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports ftp,ftp-data,ftps,ftps-data match-set fail2ban-proftpd src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports smtp,urd,submission match-set fail2ban-postfix src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports pop3,pop3s,imap2,imaps,submission,urd,sieve match-set fail2ban-dovecot src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports smtp,urd,submission,imap3,imaps,pop3,pop3s match-set fail2ban-postfix-sasl src reject-with icmp-port-unreachable
    0     0 REJECT     tcp  --  any    any     anywhere             anywhere             multiport dports ssh,sftp match-set fail2ban-ssh-ddos src reject-with icmp-port-unreachable

Chain IN_public (1 references)
 pkts bytes target     prot opt in     out     source               destination         
  177 32280 IN_public_log  all  --  any    any     anywhere             anywhere            
  177 32280 IN_public_deny  all  --  any    any     anywhere             anywhere            
  177 32280 IN_public_allow  all  --  any    any     anywhere             anywhere            

Chain IN_public_allow (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:submission ctstate NEW
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp dpt:domain ctstate NEW
    1    64 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpts:webmin:10010 ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:ftp-data ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:domain ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:2222 ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:20000 ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:pop3s ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:pop3 ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:imap2 ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:https ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:http ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:imaps ctstate NEW
    7   356 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:smtp ctstate NEW
    6   368 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:ssh ctstate NEW
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:ftp ctstate NEW

Chain IN_public_deny (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain IN_public_log (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT_direct (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-after-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-after-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ufw-skip-to-policy-input  udp  --  any    any     anywhere             anywhere             udp dpt:netbios-ns
    0     0 ufw-skip-to-policy-input  udp  --  any    any     anywhere             anywhere             udp dpt:netbios-dgm
    0     0 ufw-skip-to-policy-input  tcp  --  any    any     anywhere             anywhere             tcp dpt:netbios-ssn
    0     0 ufw-skip-to-policy-input  tcp  --  any    any     anywhere             anywhere             tcp dpt:microsoft-ds
    0     0 ufw-skip-to-policy-input  udp  --  any    any     anywhere             anywhere             udp dpt:bootps
    0     0 ufw-skip-to-policy-input  udp  --  any    any     anywhere             anywhere             udp dpt:bootpc
    0     0 ufw-skip-to-policy-input  all  --  any    any     anywhere             anywhere             ADDRTYPE match dst-type BROADCAST

Chain ufw-after-logging-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 LOG        all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "

Chain ufw-after-logging-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 LOG        all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "

Chain ufw-after-logging-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-after-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-before-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp destination-unreachable
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp source-quench
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp time-exceeded
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp parameter-problem
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp echo-request
    0     0 ufw-user-forward  all  --  any    any     anywhere             anywhere            

Chain ufw-before-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  lo     any     anywhere             anywhere            
    0     0 ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED
    0     0 ufw-logging-deny  all  --  any    any     anywhere             anywhere             ctstate INVALID
    0     0 DROP       all  --  any    any     anywhere             anywhere             ctstate INVALID
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp destination-unreachable
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp source-quench
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp time-exceeded
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp parameter-problem
    0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             icmp echo-request
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp spt:bootps dpt:bootpc
    0     0 ufw-not-local  all  --  any    any     anywhere             anywhere            
    0     0 ACCEPT     udp  --  any    any     anywhere             224.0.0.251          udp dpt:mdns
    0     0 ACCEPT     udp  --  any    any     anywhere             239.255.255.250      udp dpt:1900
    0     0 ufw-user-input  all  --  any    any     anywhere             anywhere            

Chain ufw-before-logging-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-before-logging-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-before-logging-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-before-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         
  368 44299 ACCEPT     all  --  any    lo      anywhere             anywhere            
  742 92420 ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED
  372 26928 ufw-user-output  all  --  any    any     anywhere             anywhere            

Chain ufw-logging-allow (0 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 LOG        all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 10 LOG level warning prefix "[UFW ALLOW] "

Chain ufw-logging-deny (2 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 RETURN     all  --  any    any     anywhere             anywhere             ctstate INVALID limit: avg 3/min burst 10
    0     0 LOG        all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "

Chain ufw-not-local (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 RETURN     all  --  any    any     anywhere             anywhere             ADDRTYPE match dst-type LOCAL
    0     0 RETURN     all  --  any    any     anywhere             anywhere             ADDRTYPE match dst-type MULTICAST
    0     0 RETURN     all  --  any    any     anywhere             anywhere             ADDRTYPE match dst-type BROADCAST
    0     0 ufw-logging-deny  all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 10
    0     0 DROP       all  --  any    any     anywhere             anywhere            

Chain ufw-reject-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-reject-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-reject-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-skip-to-policy-forward (0 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       all  --  any    any     anywhere             anywhere            

Chain ufw-skip-to-policy-input (7 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       all  --  any    any     anywhere             anywhere            

Chain ufw-skip-to-policy-output (0 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  any    any     anywhere             anywhere            

Chain ufw-track-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-track-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-track-output (1 references)
 pkts bytes target     prot opt in     out     source               destination         
   83  4980 ACCEPT     tcp  --  any    any     anywhere             anywhere             ctstate NEW
  289 21948 ACCEPT     udp  --  any    any     anywhere             anywhere             ctstate NEW

Chain ufw-user-forward (1 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-user-input (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:http
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp dpt:http
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:https
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp dpt:https
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:submission
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp dpt:submission
    0     0 ACCEPT     tcp  --  any    any     anywhere             anywhere             tcp dpt:urd
    0     0 ACCEPT     udp  --  any    any     anywhere             anywhere             udp dpt:465

Chain ufw-user-limit (0 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 LOG        all  --  any    any     anywhere             anywhere             limit: avg 3/min burst 5 LOG level warning prefix "[UFW LIMIT BLOCK] "
    0     0 REJECT     all  --  any    any     anywhere             anywhere             reject-with icmp-port-unreachable

Chain ufw-user-limit-accept (0 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  any    any     anywhere             anywhere            

Chain ufw-user-logging-forward (0 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-user-logging-input (0 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-user-logging-output (0 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain ufw-user-output (1 references)
 pkts bytes target     prot opt in     out     source               destination 

My problem is that when I do port scan, or try ssh to port 22, it works...

How can I search within skype chat history?

I tried CTRL+F but nothing happens.