Commands using tail (292)

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list block devices
Shows all block devices in a tree with descruptions of what they are.

for all who don't have the watch command
#Usage: watch timeinsecond "command"

Switch 2 characters on a command line.
If you typed 'sl', put the cursor on the 'l' and hit ctrl-t to get 'ls'.

Set RGB gamma of secondary monitor
This command first determines whether a second screen is connected. If this is the case, it sets the screen's RGB gamma via xrandr. Useful for cheap or slightly defective monitors with a tint. In this example a yellowing/champagne color deviation is compensated for by decreasing the red and the green portion of the image.

get partitions that are over 50% usage

url shortner using google's shortner api
First get a api key for google url shortner from here https://developers.google.com/url-shortener/ Then replace the API_KEY in the command

Watch and cat the last file to enter a directory
Great for watching things like Maildir's or any other queue directory.

Selecting a random file/folder of a folder
Also looks in subfolders

Quick way to sum every numbers in a file written line by line
If you have a file full of numbers written line by line, you can sum every line to get the total. With a file like this: 3443535 9878977 67554 987798 232324 you will got: 14610188

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"


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