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This command will log you into somehost via SSH and then go into the background (-f). From there, you can point e.g. firefox at localhost:8000 as a SOCKS proxy. Autossh will use port 20000 and 20001 to send and receive test data on those ports to ensure the SSH tunnel is still running, and will try to re-start the tunnel if it goes down. Make sure you have ssh-agent running, or passwordless ssh keys distributed between the two hosts.
This version compresses the data for transport.
http://www.linux-party.com/index.php/8157-escribir-en-la-consola-linux-sin-que-quede-registrado-en-el-history
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token.
This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use:
`awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'`
You must adapt the command line to include:
* $MFA_IDis ARN of the virtual MFA or serial number of the physical one
* TTL for the credentials
-B flag = don't include characters that can be confused for other characters (this helps when you give someone their password for the first time so they don't cause a lockout with, for example, denyhosts or fail2ban)
-s flag = make a "secure", or hard-to-crack password
-y flag = include special characters (not used in the example because so many people hate it -- however I recommend it)
"1 10" = output 1 password, make it 10 characters in length
For even more secure passwords please use the -y flag to include special characters like so:
$ pwgen -Bsy 10 1
output>> }&^Y?.>7Wu
capture 2000 packets and print the top 10 talkers
pings a server once per second, and beeps when the server is unreachable.
Basically the opposite of:
$ ping -a server-or-ip.com
which would beep when a server IS reachable.
You could also substitute beep with any command, which makes this a powerful alternative to ping -a:
$ while true; do [ "$(ping -c1W1w1 server-or-ip.com 2>/dev/null | awk '/received/ {print $4}')" = 1 ] && date || echo 'server is down!'; sleep 1; done
which would output the date and time every sec until the ping failed, in which case it would echo.
Notes:
Requires beep package.
May need to run as root (beep uses the system speaker)
Tested on Ubuntu which doesn't have beep out of the box...
$ sudo apt-get install beep
Using this command you can track a moment when usb device was attached.
