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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

Get version of loaded kernel module
Returns the version of the kernel module specified as "MODULENAME", when available.

subtraction between lines
It's allways strange for me to see sed and awk in the same command line if you can avoid it

OSX command to take badly formatted xml from the clipboard, cleans it up and puts it back into the clipboard.
This command can be used with xclip or xsel for use on a linux box.

list all files in a directory, sorted in reverse order by modification time, use file descriptors.
It's both silly, and infinitely useful. Especially useful in logfile directories where you want to know what file is being updated while troubleshooting.

Remove executable bit from all files in the current directory recursively, excluding other directories
With GNU chmod at least it is that simple.

Short and sweet output from dig(1)
Turn off almost all of dig's output except for what you'd see in a zone file. This can also be put into ~/.digrc.

list block devices
Shows all block devices in a tree with descruptions of what they are.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Prettify an XML file
Generated XML files often are poorly formatted. Use this command to properly indent and normalize the file in-place.


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