Commands by SuperFly (20)

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Empty the linux buffer cache

Rename files in batch

Ultra fast public IP address lookup using Cloudflare's 1.1.1.1

"I Feel Lucky" for Google Images
prompts for a search term and then pulls down the first result from google images

remove empty lines

Test a serial connection
If the connection works you should see a "hello" on host A. If not: check your cabeling etc :-)

send a circular

check open ports without netstat or lsof

total percentage of memory use for all processes with a given name
This command will add up RAM usage of all processes whose name contains "java" and output the sum of percentages in HRF. Also, unlike the original #15430, it wont fail on processes with a usage of >9.9%. Pleases note that this command wont work reliably in use cases where a significant portion of processes involved are using less than 0.1% of RAM, because they will be counted as "0", even though a great number of them could add up to significant amounts.

Make sudo forget password instantly
By default sudo 'remembers' password for a few minutes, so that you do not need to re-enter password for a series of sudo commands that might follow within a short time duration. However, sometime you might want sudo to instantly 'forget' the password. (Next sudo command will need you to reenter the password) Credit: I first learned this while listening to one of the 'tuxradar' podcast.


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