Commands using at (30)

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Virtualbox: setup hardware
where - memory 256 assign 256 Mb RAM - acpi on enable ACPI (mandatory if you use Winfog 2000 - ioapic off disable the IO APIC. Not useful if you use one CPU (on virtual machine or a 32 bit operative system). As ACPI, this switch is mandatory for Winbug 2000 - pae on enable the Phisical Address Extension how to use more than 4Gb of RAM on x86 CPU - hwvirtex on enables hardware virtualization extensions for microprocessors that have this feature (which should be also enabled in the BIOS of the motherboard) - nestedpaging on allows part of the processes of memory management hardware are made directly

List contents of jar
useful to find the list of dependencies

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"

find files ignoring .svn and its decendents

Both view and pipe the file without saving to disk
This is a cool trick to view the contents of the file on /dev/pts/0 (or whatever terminal you're using), and also send the contents of that file to another program by way of an unnamed pipe. All the while, you've not bothered saving any extra data to disk, like you might be tempted to do with sed or grep to filter output.

Locate config files of the program
Locate config files of the program. May not be used for interactive programs like vim.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

get a rough estimate about how much disk space is used by all the currently installed debian packages
The vaule is expressed in megabytes

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

Create a new file


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