Commands by kineticrick (3)

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add repeated watermark to image

return external ip
Get your ip address, hostname, ASN and geolocation information. If you want just one field as a text response you can also get that,eg curl ipinfo.io/ip

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

Retrieve the size of a file on a server
- Where $URL is the URL of the file. - Replace the $2 by $3 at the end to get a human-readable size. Credits to svanberg @ ArchLinux forums for original idea. Edit: Replaced command with better version by FRUiT. (removed unnecessary grep)

Batch rename extension of all files in a folder, in the example from .txt to .md
Same thing using bash built-in features instead of a sub-shell.

View Processeses like a fu, fu
I don't truly enjoy many commands more than this one, which I alias to be ps1.. Cool to be able to see the heirarchy and makes it clearer what need to be killed, and whats really going on.

Query well known ports list
Uses the file located in /etc/services

Display total Kb/Mb/Gb of a folder and each file

Join lines
awk version of 7210. Slightly longer, but expanding it to catch blank lines is easier: $ awk 'BEGIN{RS="\0"}{gsub(/\n+/,"");print}' file.txt

Use top to monitor only all processes with the same name fragment 'foo'
top accecpts a comma separated list of PIDs.

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