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oneliner to transfer a directory using ssh and tar
this will tar/send/untrar a whole directory.

Change the default editor for modifying the sudoers list.
On Ubuntu, the default editor for visudo is nano. To change the editor to something else (e.g., vi) use this command.

run complex remote shell cmds over ssh, without escaping quotes
It executes commands as arguments to ssh, avoiding problematic shell expansions, without the need of writing the commands in question to a temporary file, just reading them from STDIN.

check open ports without netstat or lsof

connect to X login screen via vnc
the $15 may change for you depending on your distro, etc...

Change active bond slave
This forces a bonded interface to switch to another slave in the bond as its active slave.

Print out a man page
man -t manpagename gives a postscript version of said man page. You then pipe it to ls, and assuming you have cups set up, it prints in your default printer.

Find and copy scattered mp3 files into one directory
No problem with word splitting. That should works on many Unix likes.

Unzip 25 zip files files at once

Get AWS temporary credentials ready to export based on a MFA virtual appliance
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


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