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diff current vi buffer edits against original file

Use a regex as a field separator awk

List files opened by a PID
Lis all files opened by a particular process id. "PID"

Create a large test file (taking no space).

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

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

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

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

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

ps grep with header
Yet another ps grep function, but this one includes the column headings.


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