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Re: Invoking bc with defaults
herbert langhans <w3%langhans.com.pl@localhost> wrote:
> > Create a file ~/bc.conf with your desired settings (like your
> > mentioned scale=4).
> > Start bc with this file as argument and force interactive mode:
> > bc -i bc.conf
> > This will evaluate bc.conf and instead of quitting after EOF it will drop
> > you to
> > a bc prompt for further evaluation.
> it works nicely now. I still wonder why bc doesnt have such basic option
> by default - I had never guessed to use it to set this option. The manual
> page says -i is the 'interactive mode' - interactive it is anyway when I
> can type calculations on the command line ...
Just thought I'd point out that you can also pipe options to bc(1); I use
the following shell script as a simple calulator:
# calc - uses bc(1) to do math calculations; precision = 4
# useage: calc "<math expression>"
echo "scale=4; $@" | bc -l
You might find that easier than yet having another rc file.
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