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start a tunnel from some machine's port 80 to your local post 2001
now you can acces the website by going to http://localhost:2001/

ssh autocomplete based on ~/.ssh/config
I sue this in my .bashrc file This will also do auto-completion for scp and sftp

SSH Copy ed25519 key into your host

Find the package that installed a command

dstat - a mix of vmstat, iostat, netstat, ps, sar...
This is a very powerful command line tool to gather statistics for a Linux system. http://dag.wieers.com/home-made/dstat/

Send multiple attachments using mailx
If you're users have ever asked your script to email their reports in separate attachments instead of tar'ring them into one file, then you can use this. You'll need the mailx package of course. In Unix you'd want to add an additional parameter "-m" (uuencode foo.txt foo.txt; uuencode /etc/passwd passwd.txt)|mailx -m -s "Hooosa!" someone@cmdfu.com

Backup with SSH in a archive
$PRIVATEKEY - Of course the full path to the private key \n $HOST - The host where to get the backup \n $SOURCE - The directory you wish to backup \n $DESTINATION - The destination for the backup on your local machine

convert vdi to vmdk (virtualbox hard disk conversion to vmware hard disk format)
Converts a .vdi file to a .vmdk file for use in a vmware virtual machine. The benefit: using this method actually works. There are others out there that claim to give you a working .vmdk by simply using the qemu-img command alone. Doing that only results in pain for you because the .vmdk file will be created with no errors, but it won't boot either. Be advised that these conversions are very disk-intensive by nature; you are probably dealing with disk images several gigabytes in size. Once finished, the process of using the new .vmdk file is left as an exercise to the reader.

Undo
Ctrl+_

print all characters of a file using hexdump
'od -c' works like 'hexdump -c' but is available on other operating systems that don't ship with hexdump (e.g. solaris).


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