Commands using rm (301)

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Type strait into a file from the terminal.
Takes input from the connected terminal and dumps it to the specified file. Stop writing and close file with control + D or the end of line character. Useful for copying+pasting large blobs of text over SSH to a new machine.

runs a X session within your X session
http://www.debian-administration.org/article/Running_multiple_X11_sessions

Prepend a text to a file.
Syntax: $ prepend content to add [filename] Uses ed, so no temp files created.

Bitcoin Brainwallet Base58 Encoder
A bitcoin "brainwallet" is a secret passphrase you carry in your brain. The Bitcoin Brainwallet Private Key Base58 Encoder is the third of three functions needed to calculate a bitcoin PRIVATE key from your "brainwallet" passphrase. This base58 encoder uses the obase parameter of the amazing bc utility to convert from ASCII-hex to base58. Tech note: bc inserts line continuation backslashes, but the "read s" command automatically strips them out. I hope that one day base58 will, like base64, be added to the amazing openssl utility.

Remove all but one specific file

In Mac OS X, read the copy area (CMD + V) and convert text to audible speech

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

Shows users and 'virtual users' on your a unix-type system
Shows a list of users that currently running processes are executing as. YMMV regarding ps and it's many variants. For example, you might need: $ ps -axgu | cut -f1 -d' ' | sort -u

Are there any words in the English language that use at least half of the alphabet without repeating any letters?
This is the most straightforward approach: first regexp limits dictionary file to words with thirteen or more characters, second regexp discards any words that have a letter repeated. (Bonus challenge: Try doing it in a single regexp!)

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


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