Commands by ktonga (1)

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Apply, in parallel, a bc expression to CSV
Define a function that applies bc, the *nix calculator, with the specified expression to all rows of the input CSV. The first column is mapped to {1}, second one to {2}, and so forth. See sample output for an example. This function uses all available cores thanks to GNU Parallel. Requires GNU Parallel

Find all dotfiles and dirs
find makes it easier, filtering . and .. maxdepth could be removed, finding entries recursively. Removing mindepth causes . to appear

connects to a serial console
e.g., 'screen -L /dev/ttyUSB0 38400' listens to your Holux M-241 GPS logger and turns on automatic logging

show how many regex you use in your vim today
i want to count how many regex code i have used in vim in a long time so i make a directory in svn host and post record to this directory of course i dont want to post manually so i worte a script to do that and this is the core thing to do

Batch convert files to utf-8
taken from http://blog.ofirpicazo.com/linux/batch-convert-files-to-utf-8/

Delete a file/directory walking subdirectories (bash4 or zsh)

VI config to save files with +x when a shebang is found on line 1
Add this to .vimrc to automatically give scripts with a shebang (e.g., #!/usr/bin/perl) executable permissions when saving. Found @ http://stackoverflow.com/questions/817060/creating-executable-files-in-linux/817522#817522

show the date every rpm was installed
the newest rpms are at the top; individual packages can also be queried this way: rpm --last -q package

generate iso

keep a log of the active windows
This logs the titles of the active windows, thus you can monitor what you have done during which times. (it is not hard to also log the executable name, but then it is gets too long)


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