Commands by spiffwalker (6)

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find and delete empty dirs, start in current working dir
A quick way to find and delete empty dirs, it starts in the current working directory. If you do find . -empty -type d you will see what could be removed, or to a test run.

drop first column of output by piping to this
An advantage is that this doesn't modify remained string at all. One can change {0,1} with {0,n} to drop several columns

copy from host1 to host2, through your host
This is a 'nocd' alternative :)

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

Get line count for any file ending with extension recursively rooted at the current directory.

Find biggest 10 files in current and subdirectories and sort by file size

count of down available ips

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 usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

Url Encode
It only encodes non-Basic-ASCII chars, as they are the only ones not well readed by UTF-8 and ISO-8859-1 (latin-1). It converts all * C3 X (some latin symbols like ASCII-extended ones) and * C2 X (some punctuation symbols like inverted exclamation) ...UTF-8 double byte symbols to escaped form that every parser understands to form the URLs. I didn't encode spaces and the rest of basic punctuation, but supposedly, space and others are coded as \x20, for example, in UTF-8, latin-1 and Windows-cp1252.... so its read perfectly. Please feel free to correct, the application to which I designe that function works as expected with my assumption. Note: I specify a w=999, I didn't find a flag to put unlimited value. I just suppose very improbable surpass the de-facto 255 (* 3 byte max) = 765 bytes length of URL


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