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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

Create a bunch of dummy files for testing
Sometimes I need to create a directory of files to operate on to test out some commandlinefu I am cooking up. The main thing is the range ({1..N}) expansion.

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

Yet Another Large Screen Clock

Comment current line
This should work with different locales. Another post reports

Find Duplicate Files (based on size first, then MD5 hash)
for OS X

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

cpu info

Better way to use notify-send with at or cron
we don't need to export variables to set a env to a command, we may do this before the command directly


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