I upgraded ubuntu to focal 20.04 and SSH was unable to negotiate with network devices I tried to ssh on.
Solution was found here, or simpy editing /etc/ssh/ssh_conf by adding following lines to the end of the file:

Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
MACs hmac-md5,hmac-sha1,umac-64@openssh.com
KexAlgorithms diffie-hellman-group1-sha1,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
HostKeyAlgorithms ssh-rsa,ssh-dss

This site has them all.

Use this in your regular expression ^\h*\R

Try from cli with: putty /dev/ttyUSB0 -serial -sercfg 115200,8,n,1,N

Install xsel

sudo aptitude install xsel

As seen on garron.me

wget -> wget -q -O – checkip.dyndns.org|sed -e ‘s/.*Current IP Address: //’ -e ‘s/<.*$//’

curl -> curl -s checkip.dyndns.org|sed -e ‘s/.*Current IP Address: //’ -e ‘s/<.*$//’

curl -> curl ifconfig.me

lynx -> lynx -dump ifconfig.me | grep ‘IP Address’

find  /path/to/dest -type f -empty

source, nixCraft

• In grub boot screen type “e” for edit, and search for line starting with linux – add “init=/bin/bash” at the end
  • linux /boot/vmlinuz-version root=UUID=hex ro quite init=/bin/bash
• Press CTRL+X to boot and execute following:
  • mount -o remount,rw /
• enter “passwd” to change root password (or passwd username)
• execute “sync” and make reboot

Nice articles on tecmint and rootusers.

– make sure you have defined user on ASA with privilege 15
– make sure you have ssh scopy enable configured
– on your linux host enter pscp -pw <password> <filename> <username>@<ASA IP>:<location/filename>

something like: pscp -pw THISisp4ssw0rdf anyconnectfile.pkg adminusername@8.8.8.8:disk0:/anyconnectfile.pkg

if you want to use scp with password prompt use: scp anyconnectfile.pkg adminusername@8.8.8.8:disk0:/anyconnectfile.pkg