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No curl and no sed, just wget :)
If you don't send an interface, it shows private IP address of all interfaces
lgrep regex [dir]
I know you can use pidof but with this you can know the specific PID with his command arguments (useful if you're running various proccess with same application)
Check if a site is down with downforeveryoneorjustme.com
ur1.ca needs http:// on your URL
Shows you the geolocation of an IP address.