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Full Discussion: Calculation with floats
Top Forums Shell Programming and Scripting Calculation with floats Post 302471037 by Chubler_XL on Thursday 11th of November 2010 08:58:02 PM
Old 11-11-2010
Quote:
Originally Posted by kristinu
This worked for me with ksh.

fa=12.123
fb=21.321
ans=$(($fa*$fb))

Are there any restrictions of floating point calculations in ksh?

---------- Post updated at 07:01 PM ---------- Previous update was at 07:00 PM ----------

I thought I move away from perl in favour of python. Any opinions?

Ksh dosn't work correctly for me:

Code:
$ echo $((2.9 * 1.9))
2

Also why not use bc it's much smaller than python/perl/awk?

Code:
$ size /usr/bin/bc /usr/bin/awk /usr/bin/perl
/usr/bin/bc: 13568 + 10344 + 41392 + 3876 = 69180
/usr/bin/awk: 86520 + 64696 + 419848 + 18802 = 589866
/usr/bin/perl: 1072227 + 45157 + 2941 + 122652 = 1242977

 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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