Kokeilin tässä komentoriviltä laskinta hämmästyin:
$ bc
bc 1.06
Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
sqrt(3)
1
sqrt(a)
0
a=5
b=4
c = sqrt(a*b)
c
4
quit
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Kokeilin sitten selventää asiaa:
man bc
OPTIONS
-h, --help
Print the usage and exit.
-i, --interactive
Force interactive mode.
-l, --mathlib
Define the standard math library.
-w, --warn
Give warnings for extensions to POSIX bc.
-s, --standard
Process exactly the POSIX bc language.
-q, --quiet
Do not print the normal GNU bc welcome.
-v, --version
Print the version number and copyright and quit.
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Pitää ilmeisesti olla tuo math kirjasto käytössä, että toimiipi oikein.
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$ bc -l
bc 1.06
Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
sqrt(3)
1.73205080756887729352
sqrt(a)
0
a=5
b=4
c = sqrt(a*b)
c
4.47213595499957939281
quit
jo alkoi toimia