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I'm not sure what apt this is, but it seems to work on most X screens, an is useful for saving power, and not straining your eyes
With this command you can easily unzip multiple zip files with just one command. All you need to do is to use single quotes.
In this example, the command will recursively find files (-type f) under /some/path, where the path ends in .mp3, case insensitive (-iregex).
It will then output a single line of output (-print0), with results terminated by a the null character (octal 000). Suitable for piping to xargs -0. This type of output avoids issues with garbage in paths, like unclosed quotes.
The tr command then strips away everything but the null chars, finally piping to wc -c, to get a character count.
I have found this very useful, to verify one is getting the right number of before you actually process the results through xargs or similar. Yes, one can issue the find without the -print0 and use wc -l, however if you want to be 1000% sure your find command is giving you the expected number of results, this is a simple way to check.
The approach can be made in to a function and then included in .bashrc or similar. e.g.
$ count_chars() { tr -d -c "$1" | wc -c; }
In this form it provides a versatile character counter of text streams :)
stty sane resets the tty to basic usable function. The ^J is a newline -- sometimes CR/LF interpretation is broken so use the ^J explicitly.
Catches .swp, .swo, .swn, etc.
If you have access to lsof, it'll give you more compressed output and show you the associated terminals (e.g., pts/5, which you could then use 'w' to figure out where it's originating from): lsof | grep '\.sw.$'
If you have swp files turned off, you can do something like: ps x | grep '[g,v]im', but it won't tell you about files open in buffers, via :e [file].
Converts any number of seconds into days, hours, minutes and seconds.
sec2dhms() {
declare -i SS="$1"
D=$(( SS / 86400 ))
H=$(( SS % 86400 / 3600 ))
M=$(( SS % 3600 / 60 ))
S=$(( SS % 60 ))
[ "$D" -gt 0 ] && echo -n "${D}:"
[ "$H" -gt 0 ] && printf "%02g:" "$H"
printf "%02g:%02g\n" "$M" "$S"
}
You can install filterous with
$ sudo apt-get install libxslt1-dev; sudo easy_install -U filterous