Commands by root (53)

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backup system over ssh, exlucde common dirs

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

Quickly CD Out Of Directories
`up 3` will climb the directory tree by three steps. `up asdf` will do nothing, and returns exit code 1 as an error should.

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Go to the Nth line of file [text editor]
This is not printing, real editing using the text editor.

Rotate a single page PDF by 180 degrees
More pdftk examples: http://www.pdflabs.com/docs/pdftk-cli-examples/

Find the package that installed a command

Beep siren
Infinitely plays beeps with sinusoidally changing sound frequency. Ideal for alarm on an event.

Google text-to-speech in mp3 format
same but redirecting to player and putting whaever text line.. works on my ubuntu machine ...

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


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