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seconds since epoch to ISO timestamp
No need to use perl, awk, nor /usr/bin/date -- bash's "printf" builtin will do it.

Execute a sudo command remotely, without displaying the password
The ssh command alone will execute the sudo command remotely, but the password will be visible in the terminal as you type it. The two stty commands disable the terminal from echoing the password back to you, which makes the remote sudo act as it does locally.

Show a notify popup in Gnome that expires in specified time and does not leave an icon in notifications tray
Tested in Gnome 3.4

Email someone if a web page has been updated.
A cronjob command line to email someone when a webpages homepage is updated.

Pretty Print a simple csv in the command line
Will handle pretty much all types of CSV Files. The ^M character is typed on the command line using Ctrl-V Ctrl-M and can be replaced with any character that does not appear inside the CSV. Tips for simpler CSV files: * If newlines are not placed within a csv cell then you can replace `map(repr, r)` with r

Nginx - print all optional modules before compilation
wget http://nginx.org/download/nginx-1.15.3.tar.gz && tar -xzf 1.15.3.tar.gz && cd nginx-1.15.3

Find the package that installed a command

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

Not a kismet replacement...
If you're like some individuals who rely on ndiswrapper and cannot use kismet, this command may be of service. watch -n .5 "iwlist wlan0 scan | egrep 'ESSID|Encryption'" Or... watch -n .5 "iwlist wlan0 scan | egrep 'ESSID|Encryption' | egrep 'linksys'" :-) Hopefully you'll find some dd-wrt compatible routers.

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

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